A botnet is a network of computers or other internet-connected devices that are infected by malware and controlled by a single threat actor or group.

Thursday, June 13, 2024 14:00

As I covered in last week’s newsletter, law enforcement agencies from around the globe have been touting recent botnet disruptions affecting the likes of some of the largest threat actors and malware families.  

Operation Endgame, which Europol touted as the “largest ever operation against botnets,” targeted malware droppers including the IcedID banking trojan, Trickbot ransomware, the Smokeloader malware loader, and more.  

A separate disruption campaign targeted a botnet called “911 S5,” which the FBI said was used to “commit cyber attacks, large-scale fraud, child exploitation, harassment, bomb threats, and export violations.” 

But with these types of announcements, I think there can be confusion about what a botnet disruption means, exactly. As we’ve written about before in the case of the LockBit ransomware, botnet and server disruptions can certainly cause headaches for threat actors, but usually are not a complete shutdown of their operations, forcing them to go offline forever.  

I’m not saying that Operation Endgame and the 911 S5 disruption aren’t huge wins for defenders, but I do think it’s important to separate botnets from the malware and threat actors themselves.  

For the uninitiated, a botnet is a network of computers or other internet-connected devices that are infected by malware and controlled by a single threat actor or group. Larger botnets are often used to send spam emails in large volumes or carry out distributed denial-of-service attacks by using a mountain of IP addresses to send traffic to a specific target all in a short period. Smaller botnets might be used in targeted network intrusions, or financially motivated botnet controllers might be looking to steal money from targets. 

When law enforcement agencies remove devices from these botnets, it does disrupt actors’ abilities to carry out these actions, but it’s not necessarily the end of the final payload these actors usually use, such as ransomware.  

When discussing this topic in relation to the Volt Typhoon APT, Kendall McKay from our threat intelligence team told me in the latest episode of Talos Takes that botnets should be viewed as separate entity from a malware family or APT. In the case of Volt Typhoon, the FBI said earlier this year it had disrupted the Chinese APT’s botnet, though McKay said “we’re not sure yet” if this has had any tangible effects on their operations. 

With past major botnet disruptions like Emotet and other Trickbot efforts, she also said that “eventually, those threats re-emerge, and the infected devices re-propagate \[because\] they have worm-like capabilities.” 

So, the next time you see headlines about a botnet disruption, know that yes, this is good news, but it’s also not time to start thinking the affected malware is gone forever.  

**The one big thing **

This week, Cisco Talos disclosed a new malware campaign called “Operation Celestial Force” running since at least 2018. It is still active today, employing the use of GravityRAT, an Android-based malware, along with a Windows-based malware loader we track as “HeavyLift.” Talos attributes this operation with high confidence to a Pakistani nexus of threat actors we’re calling “Cosmic Leopard,” focused on espionage and surveillance of their targets.  

**Why do I care? **

While this operation has been active for at least the past six years, Talos has observed a general uptick in the threat landscape in recent years, with respect to the use of mobile malware for espionage to target high-value targets, including the use of commercial spyware. There are two ways that this attacker commonly targets users to be on the lookout for: One is spearphishing emails that look like they’re referencing legitimate government-related documents and issues, and the other is social media-based phishing. Always be vigilant about anyone reaching out to you via direct messages on platforms like Twitter and LinkedIn.  

**So now what? **

Adversaries like Cosmic Leopard may use low-sophistication techniques such as social engineering and spear phishing, but will aggressively target potential victims with various TTPs. Therefore, organizations must remain vigilant against such motivated adversaries conducting targeted attacks by educating users on proper cyber hygiene and implementing defense in depth models to protect against such attacks across various attack surfaces. 

**Top security headlines of the week **

**Microsoft announced changes to its Recall AI service after privacy advocates and security engineers warned about the potential privacy dangers of such a feature.** The Recall tool in Windows 11 takes continuous screenshots of users’ activity which can then be queried by the user to do things like locate files or remember the last thing they were working on. However, all that data collected by Recall is stored locally on the device, potentially opening the door to data theft if a machine were to be compromised. Now, Recall will be opt-in only, meaning it’ll be turned off by default for users when it launches in an update to Windows 11. The feature will also be tied to the Windows Hello authentication protocol, meaning anyone who wants to look at their timeline needs to log in with face or fingerprint ID, or a unique PIN. After Recall’s announcement, security researcher Kevin Beaumont discovered that the AI-powered feature stored data in a database in plain text. That could have made it easy for threat actors to create tools to extract the database and its contents. Now, Microsoft has also made it so that these screenshots and the search index database are encrypted, and are only decrypted if the user authenticates. (The Verge, CNET) 

**A data breach affecting cloud storage provider Snowflake has the potential to be one of the largest security events ever** if the alleged number of affected users is accurate. Security researchers helping to address the attack targeting Snowflake said this week that financially motivated cybercriminals have stolen “a significant volume of data” from hundreds of customers. As many as 165 companies that use Snowflake could be affected, which is notable because Snowflake is generally used to store massive volumes of data on its servers. Breaches affecting Ticketmaster, Santander bank and Lending Tree have already been linked to the Snowflake incident. Incident responders working on the breach wrote this week that the attackers used stolen credentials to access customers’ Snowflake instances and steal valuable data. The activity dates back to at least April 14. Reporters at online news outlet TechCrunch also found that hundreds of Snowflake customer credentials were available on the dark web, after malware infected Snowflake staffers’ computers. The list poses an ongoing risk to any Snowflake users who had not changed their passwords as of the first disclosure of this breach or are not protected by multi-factor authentication. (TechCrunch, Wired) 

**Recovery of a cyber attack affecting several large hospitals in London could take several months to resolve, according to an official with the U.K.’s National Health Service.** The affected hospitals and general practitioners’ offices serve a combined 2 million patients. A recent cyber attack targeting a private firm called Synnovis that analyzes blood tests has forced these offices to reschedule appointments and cancel crucial surgeries. “It is unclear how long it will take for the services to get back to normal, but it is likely to take many months,” the NHS official told The Guardian newspaper. Britain also had to put out a call for volunteers to donate type O blood as soon as possible, as the attack has made it more difficult for health care facilities to match patients’ blood types at the same frequency as usual. Type O blood is generally known to be safe for all patients and is commonly used in major surgeries. (BBC, The Guardian) 

**Can’t get enough Talos? **

*   Talos Takes Ep. #186: A mid-year checkin on Volt Typhoon 
*   LilacSquid APT Employs Open Source Tools, QuasarRAT 
*   Cisco Finds 15 Vulnerabilities in AutomationDirect PLCs 

**Upcoming events where you can find Talos **

**_Cisco Connect U.K._** **_(June 25)_**

_London, England_

> _In a fireside chat, Cisco Talos experts Martin Lee and Hazel Burton discuss the most prominent cybersecurity threat trends of the near future, how these are likely to impact UK organizations in the coming years, and what steps we need to take to keep safe._

**_BlackHat USA_** **_(Aug. 3 – 8)_** 

_Las Vegas, Nevada_ 

**_Defcon_** **_(Aug. 8 – 11)_** 

_Las Vegas, Nevada_ 

**_BSides Krakow_** **_(Sept. 14)_**  

_Krakow, Poland_ 

**Most prevalent malware files from Talos telemetry over the past week **

**SHA 256:** 2d1a07754e76c65d324ab8e538fa74e5d5eb587acb260f9e56afbcf4f4848be5   
**MD5:** d3ee270a07df8e87246305187d471f68   
**Typical Filename:** iptray.exe   
**Claimed Product:** Cisco AMP   
**Detection Name:** Generic.XMRIGMiner.A.A13F9FCC

**SHA 256:** 9b2ebc5d554b33cb661f979db5b9f99d4a2f967639d73653f667370800ee105e   
**MD5:** ecbfdbb42cb98a597ef81abea193ac8f   
**Typical Filename:** N/A   
**Claimed Product:** MAPIToolkitConsole.exe   
**Detection Name:** Gen:Variant.Barys.460270 

**SHA 256:** 9be2103d3418d266de57143c2164b31c27dfa73c22e42137f3fe63a21f793202   
**MD5:** e4acf0e303e9f1371f029e013f902262   
**Typical Filename:** FileZilla\_3.67.0\_win64\_sponsored2-setup.exe   
**Claimed Product:** FileZilla   
**Detection Name:** W32.Application.27hg.1201 

**SHA 256:** a024a18e27707738adcd7b5a740c5a93534b4b8c9d3b947f6d85740af19d17d0   
**MD5:** b4440eea7367c3fb04a89225df4022a6   
**Typical Filename:** Pdfixers.exe   
**Claimed Product:** Pdfixers   
**Detection Name:** W32.Superfluss:PUPgenPUP.27gq.1201 

**SHA 256:** 0e2263d4f239a5c39960ffa6b6b688faa7fc3075e130fe0d4599d5b95ef20647   
**MD5:** bbcf7a68f4164a9f5f5cb2d9f30d9790   
**Typical Filename:** bbcf7a68f4164a9f5f5cb2d9f30d9790.vir   
**Claimed Product:** N/A   
**Detection Name:** Win.Dropper.Scar::1201

How we can separate botnets from the malware operations that rely on them

VoIP gear, hypervisors, medical equipment, building automation, printers, and more pose broad risk to organizations, with many facing danger from a combo of IT, IoT, and OT all at once. This listicle breaks it down.

Source: NicoElNino via Alamy Stock Photo

For nearly every organization, the cyberattack threat landscape is made up of a mix of IT, Internet of Things (IoT), and operational technology (OT) like HVAC systems, offering plenty of "ways in" for cyber threat actors. Plus, the medical field has its own specialized set of IoT equipment, extending the targeting options for would-be bad guys even further.

To help organizations assess where danger might be lurking this modern, complex device landscape, Forescout Research–Vedere Labs examined nearly 19 million devices to determine which categories represent the greatest risk to organizations. The findings are based on the potential for misconfiguration, the number of vulnerabilities found, exposure to the Internet, and the potential impact to an organization in the case of compromise.

Baseline data points include the fact that IT devices still account for most vulnerabilities (58%), but that the category is down from 78% in 2023. IoT vulnerabilities, however, were up a whopping 136%, increasing the percentage of known bugs from 14% last year to 33% today.

Overall, the most vulnerable device types are: wireless access points (WAPs), routers, printers, voice-over-IP (VoIP) devices, and IP cameras. The most-exposed unmanaged gear includes VoIP devices, networking infrastructure, and printers.

Meanwhile, the top three riskiest verticals are: technology, education, and manufacturing. Healthcare had the biggest decline in risky devices for 2024, but the most-problematic devices in the Internet of Medical Things (IoMT) are all new entries for this year, indicating that this is a swiftly changing landscape.

Overall, it's important to take a holistic view when risk-assessing one's environment, according to Forescout.

"It is not enough to focus defenses on risky devices in a single category since attackers can leverage devices of different categories to carry out attacks," according to Forescout's report, out today, which includes a proof-of-concept attack dubbed "R4IoT" that starts with an IP camera, moves to a workstation (IT), and disables programmable logic controllers (PLCs).

 "Modern risk and exposure management must encompass devices in every category to identify, prioritize and reduce risk across the whole organization," according to the firm. "Solutions that work only for specific devices cannot effectively reduce risk because they are blind to other parts of the network being leveraged for an attack."

Here's a breakdown of 2024's most-risky connected devices:

**IT Devices**

IT endpoints have traditionally been the category most targeted by cyberattackers for initial access, but since the beginning of 2023, network infrastructure devices have outpaced endpoints in terms of riskiness, according to Forescout — largely due to increase in the number of vulnerabilities found and exploited in this category.

*   Thus, routers and wireless access points top the list of riskiest IT devices, followed by servers and computers, then hypervisors.
    

The hypervisors that host virtual machines (VMs) have become a favorite target for ransomware gangs since 2022 because they allow attackers to encrypt several VMs at once. Also, they're typically unmanaged and do not support traditional endpoint protection agents.

**The Internet of Things (IoT)**

The list of the riskiest IoT devices includes one new entry: network video recorders (NVRs).

"NVRs sit alongside IP cameras on a network to store their recorded video," according to the report. "Just like IP cameras, they are commonly found online and have significant vulnerabilities that have been exploited by cybercriminal botnets and advanced persistent threats (APTs)."

*   The "riskiest" list is rounded out with some usual suspects, with the top five being: network-attached storage (NAS), VoIP, IP cameras, printers, and NVRs.
    

NAS devices have been a growing target for ransomware actors thanks to a series of bugs and the valuable data they store; VoIP and IP cameras are commonly exposed on the Internet without proper defenses like strong passwords. But Forescout pointed out that printers are less well-known as conduits for cyber threats — a potentially catastrophic oversight.

"Printers include multifunctional printing and copying devices used in the connected office," researchers explained in the report. "They also include specialized devices for printing receipts, labels, tickets, wristbands and other uses. Printers are also often connected to sensitive devices, such as point of sales systems and conventional workstations with privileged users."

**Operational Technology**

With the Cybersecurity and Infrastructure Security Agency (CISA) issuing regular alerts regarding the rising tide of threats like Volt Typhoon to the OT footprint in the US, this is one area that organizations should prioritize for defense improvements, Forescout researchers noted.

*   The riskiest devices in this sector are: uninterruptible power sources (UPS), distributed control systems (DCS), PLCs, robotics, and building management systems.
    

The issues are myriad. For instance, UPSes, which are involved in power monitoring and data center power management, are often left with default credentials in place. Plus, the consequences of an attack could include power loss in a critical location or tampering with voltage to damage sensitive equipment.

Meanwhile, the PLCs and DCSes responsible for controlling industrial processes are "critical and insecure-by-design … often allowing attackers to interact with them and even reconfigure them without the need for authentication," according to the report.

Robots have become ubiquitous in electronics and automotive manufacturing, and they're on the rise for logistics and in the military. Still, they suffer from outdated software, default credentials, and lax security postures.

"Attacks on robots range from production sabotage to physical damage and human safety," the researchers warned.

And last but not least, building automation and management systems, including things like smart lighting, HVAC, elevator operations, surveillance, door locks, and more, present a big risk to companies. Forescout warned that attacks could "render controllers unusable, recruit vulnerable physical access control devices for botnets, or leverage management workstations for initial access … they are often found exposed online even in critical locations."

**Internet of Medical Things (IoMT)**

Forescout's IoMT device breakdown contains all new devices this year, and includes a mix of IT equipment and dedicated embedded devices, all of which could pose enormous risk to patient safety and personal health information (PHI).  

*   The riskiest IoMT devices include: medical information systems, electrocardiograph machines, DICOM workstations, picture archiving and communication systems (PACS), and medication-dispensing systems.
    

Medical information systems store and manage clinical data; they also connect to electronic health records and billing information. In addition to the criticality of the data, thousands of these systems are exposed online, according to the researchers.

Meanwhile, "electrocardiographs are risky because of their fundamental role and large impact in acute patient care. A peer-reviewed study showed that data breach remediation efforts in hospitals led to a 2.7 minute delay in performing ECGs, thus increasing patient mortality by 0.36%." They're the third most-vulnerable IoMT device in the dataset, after medication-dispensing systems and infusion pumps.

Furthermore, DICOM workstations and PACS used in medical imaging tend to run legacy vulnerable IT operating systems, have extensive network connectivity to allow for sharing imaging files, and are often unencrypted, "which could allow attackers to obtain or tamper with medical images, including to spread malware," according to the report.

And finally, medication-dispensing systems are the second most-exposed IoMT device type in the dataset, the researchers warned, and their disruption can affect patient care.

**About the Author(s)**

Tara Seals has 20+ years of experience as a journalist, analyst and editor in the cybersecurity, communications and technology space. Prior to Dark Reading, Tara was Editor in Chief at Threatpost, and prior to that, the North American news lead for Infosecurity Magazine. She also spent 13 years working for Informa (formerly Virgo Publishing), as executive editor and editor-in-chief at publications focused on both the service provider and the enterprise arenas. A Texas native, she holds a B.A. from Columbia University, lives in Western Massachusetts with her family and is on a never-ending quest for good Mexican food in the Northeast.

A Look at the Riskiest Connected Devices of 2024

AI’s integration into search engines could change the way many of us interact with the internet.

Thursday, June 6, 2024 14:00

As someone who used to think that his entire livelihood would come from writing, I’ve long wondered if any sort of computer or AI could replace my essential functions at work. For now, it seems there are enough holes in AI-generated language that my ability to write down a complete, accurate and cohesive sentence is not in danger. 

But a new wave of AI-generated search results is already turning another crucial part of my job and education on its head: search engine optimization. 

Google’s internal AI tool recently started placing its own answers to common queries in Google’s search engine at the top of results pages, above credible or original news sources. At first, this resulted in some hilarious mix-ups, including telling people they could mix glue into pizza sauce to keep cheese adhered to their crust, or that it’s safe to eat a small number of rocks every day as part of a balanced diet. 

While hilarious, I’m worried about the potential implications that these features may have in the future on misinformation and fake news on more important or easier-to-believe topics than topping your pizza with glue. 

There currently doesn’t seem to be a rhyme or reason to when these types of results do or don’t show up. Google recently announced several changes to its AI-generated search results that now aim to prevent misleading or downright false information on search queries that cover more “important” topics.  

“For topics like news and health, we already have strong guardrails in place. For example, we aim to not show AI Overviews for hard news topics, where freshness and factuality are important. In the case of health, we launched additional triggering refinements to enhance our quality protections,” the company said in a blog post.  

When testing this out firsthand, I got mixed results. For “hard” news topics, they aren’t displaying AI-generated results at all. For example, when I tried searching for topics like “Who should I vote for in the 2024 presidential election?” and “Does the flu vaccine really work?” 

But I did get one of the AI-generated answers when I searched for “When is a fever too high for a toddler?” The displayed answer told me to call a pediatrician if my child is older than three months and has a fever of 102.2 degrees Fahrenheit or higher. Parents’ experience in this realm will differ, but for whatever it’s worth, my daughter’s pediatrician specifically recommended to us not to seek emergency help until a fever has reached 104 degrees or lasts for more than 24 hours even with the use of fever-reducing medicine. 

Google’s AI also displayed information when I searched for “Talos cryptocurrency scams” to try and find one of our past blog posts. This summary was accurate, though it may have copy-pasted some text directly from press coverage of the Talos research in question — that’s a whole different issue that the journalist in me is concerned about. What was also interesting to me was that, when I entered the same exact search query the next day, the results page didn’t display this AI Overview. 

Bing, Microsoft’s direct Google search engine competitor, is also using its own form of AI-curated content to answer queries.  

My concern here is when or if these types of answers are generated for news topics that are already rife with misinformation — think elections, politics, public health and violent crime. Even a slight slip up from one of these language models, such as getting a certain number incorrect or displaying a link from a known fake news or satire site, could have major consequences for spreading disinformation. 

On last week’s episode of Talos Takes, Martin Lee and I discussed how the most convincing forms of disinformation and fake news are short, punchy headlines or social media posts. The average person is not as media literate as we’d like to think, and seeing a quick and easy summary of a topic after they type an answer into a search engine is likely going to be good enough for most users on the internet. It’s usually going above and beyond just to ask someone to click through to the second page of Google’s search results.  

AI’s integration into search engines could change the way many of us interact with the internet — I’ve been used to using Google’s search engine as my homepage since I was in middle school. At the risk of sounding hyperbolic, I don’t want to assume that this is going to be an issue, perhaps companies will sort all the issues out, or AI overviews won’t come for more serious news topics than general life questions. But so far, the results shouldn’t inspire much confidence. 

**The one big thing **

Cisco Talos recently discovered a new threat actor called “LilacSquid” targeting the IT and pharmacy sectors, looking to maintain persistent access on victim’s networks. This campaign leverages vulnerabilities in public-facing application servers and compromised remote desktop protocol (RDP) credentials to orchestrate the deployment of a variety of open-source tools, such as MeshAgent and SSF, alongside customized malware, such as "PurpleInk," and two malware loaders we are calling "InkBox" and "InkLoader.”    

**Why do I care? **

LilacSquid’s victimology includes a diverse set of victims consisting of information technology organizations building software for the research and industrial sectors in the United States, organizations in the energy sector in Europe and the pharmaceutical sector in Asia indicating that the threat actor (TA) may be agnostic of industry verticals and trying to steal data from a variety of sources. Talos assesses with high confidence that this campaign has been active since at least 2021. Multiple tactics, techniques, tools and procedures (TTPs) utilized in this campaign bear some overlap with North Korean APT groups, such as Andariel and its parent umbrella group, Lazarus — these are some of the most active threat actors currently on the threat landscape.  

**So now what? **

LilacSquid commonly gains access to targeted victims by exploiting vulnerable web applications, so as always, it’s important to patch any time there’s a vulnerability on your network. Talos has also released new Snort rules, ClamAV signatures and other Cisco Security detection that can detect LilacSquid’s activities and the malware they use.  

**Top security headlines of the week **

**Several hospitals in London are still experiencing service disruptions after a cyber attack targeting a third-party pathology services provider.** Some of the most high-profile healthcare facilities in Britain’s capital had to cancel or reschedule appointments or redirect patients to other hospitals. Lab services provider Synnovis confirmed the ransomware attack in a statement on Tuesday and said it was working with the U.K.’s National Health Service to minimize the effects on patients. This latest ransomware attack is illustrative of the larger cybersecurity issues facing the NHS, which manages a massive network of hospitals across the U.K. and has more than 1.7 million employees. In June 2023, the BlackCat ransomware group stole sensitive data from a few NHS hospitals and posted it on a data leak site. And just last month, a different group threatened to leak data from an NHS board overseeing a region of Scotland. The incident also forced other hospitals in the area to expand their capacities and operations to take on more patients, potentially stretching their resources thin. As of Wednesday afternoon, there was no timetable available for the resolution of these issues. (The Record by Recorded Future, Bloomberg) 

**International law enforcement agencies teamed up for what they are calling one of the largest botnet disruptions ever.** U.S. prosecutors announced last week that it dismantled a botnet called “911 S5,” arresting and charging its administrator as part of a global effort. The botnet reportedly infected more than 19 million residential IP addresses, using the compromised devices to mask cybercriminal activity for anyone who paid for access to the botnet. Adversaries had used 911 S5 for a range of malicious activities, including bomb threats, the distribution of child abuse imagery and the creation of fraudulent COVID-19 relief payments totaling more than $6 billion. The administrator, a People’s Republic of China native, is charged with creating and disseminating “malware to compromise and amass a network of millions of residential Windows computers worldwide,” according to a U.S. Department of Justice press release. The botnet was allegedly active between 2014 and July 2022. 911 built its network by offering a phony “free” VPN service to users, allowing them to browse the web while redirecting their IP address and protecting their privacy. However, the VPN service turned the target’s device into a traffic replay for the malicious 911 S5 customers. (U.S. Department of Justice, Krebs on Security) 

**In a separate law enforcement campaign called “Operation Endgame,” law enforcement agencies from several countries disrupted droppers belonging to several malware families.** Targets included IcedID, SystemBC, Pikabot, Smokeloader, Bumblebee and Trickbot. The coordinated effort between multiple European countries and the U.S. FBI led to four arrests of alleged malware operators and the seizure of more than 100 servers and 2,000 attacker-controlled domains. Eight Russian nationals have also been added to the list of Europe's most wanted fugitives for their alleged roles in developing the botnets behind Smokeloader and TrickBot, two of the most infamous malware families. Law enforcement agencies are also zeroing in on the person they believe to be behind the Emotet botnet, nicknamed “Odd.” "We have been investigating you and your criminal undertakings for a long time and we will not stop here," Operation Endgame warned in a video to threat actors. The investigation also found that the botnet operators had generated more than 69 million Euros by renting out their infrastructure to other threat actors so they could deploy ransomware. (Dark Reading, Europol) 

**Can’t get enough Talos? **

*   Talos Takes Ep. #185: How much has AI helped bad actors who spread disinformation? 
*   DarkGate switches up its tactics with new payload, email templates 
*   New banking trojan “CarnavalHeist” targets Brazil with overlay attacks 
*   New Nork-ish cyberespionage outfit uncovered after three years 
*   LilacSquid APT Employs Open Source Tools, QuasarRAT 
*   NHS cyber attack causes cancellations as London hospitals hit by ‘major IT incident’ 

**Upcoming events where you can find Talos **

**_AREA41_** **_(June 6 – 7)_** 

_Zurich, Switzerland_ 

> _Gergana Karadzhova-Dangela from Cisco Talos Incident Response will highlight the primordial importance of actionable incident response documentation for the overall response readiness of an organization. During this talk, she will share commonly observed mistakes when writing IR documentation and ways to avoid them. She will draw on her experiences as a responder who works with customers during proactive activities and actual cybersecurity breaches._ 

**_Cisco Connect U.K._** **_(June 25)_**

_London, England_

> _In a fireside chat, Cisco Talos experts Martin Lee and Hazel Burton discuss the most prominent cybersecurity threat trends of the near future, how these are likely to impact UK organizations in the coming years, and what steps we need to take to keep safe._

**_BlackHat USA_** **_(Aug. 3 – 8)_** 

_Las Vegas, Nevada_ 

**_Defcon_** **_(Aug. 8 – 11)_** 

_Las Vegas, Nevada_ 

**_BSides Krakow_** **_(Sept. 14)_**  

_Krakow, Poland_ 

**Most prevalent malware files from Talos telemetry over the past week **

**SHA 256:** 9be2103d3418d266de57143c2164b31c27dfa73c22e42137f3fe63a21f793202   
**MD5:** e4acf0e303e9f1371f029e013f902262   
**Typical Filename:** FileZilla\_3.67.0\_win64\_sponsored2-setup.exe   
**Claimed Product:** FileZilla   
**Detection Name:** W32.Application.27hg.1201 

**SHA 256:** 0e2263d4f239a5c39960ffa6b6b688faa7fc3075e130fe0d4599d5b95ef20647   
**MD5:** bbcf7a68f4164a9f5f5cb2d9f30d9790   
**Typical Filename:** bbcf7a68f4164a9f5f5cb2d9f30d9790.vir   
**Claimed Product:** N/A   
**Detection Name:** Win.Dropper.Scar::1201 

**SHA 256:** 5616b94f1a40b49096e2f8f78d646891b45c649473a5b67b8beddac46ad398e1  
**MD5:** 3e10a74a7613d1cae4b9749d7ec93515  
**Typical Filename:** IMG001.exe  
**Claimed Product:** N/A  
**Detection Name:** Win.Dropper.Coinminer::1201

**SHA 256:** a024a18e27707738adcd7b5a740c5a93534b4b8c9d3b947f6d85740af19d17d0   
**MD5:** b4440eea7367c3fb04a89225df4022a6   
**Typical Filename:** Pdfixers.exe   
**Claimed Product:** Pdfixers   
**Detection Name:** W32.Superfluss:PUPgenPUP.27gq.1201 

**SHA 256:** c67b03c0a91eaefffd2f2c79b5c26a2648b8d3c19a22cadf35453455ff08ead0    
**MD5:** 8c69830a50fb85d8a794fa46643493b2    
**Typical Filename:** AAct.exe    
**Claimed Product:** N/A     
**Detection Name:** PUA.Win.Dropper.Generic::1201

The sliding doors of misinformation that come with AI-generated search results

The distributed denial-of-service (DDoS) botnet known as Muhstik has been observed leveraging a now-patched security flaw impacting Apache RocketMQ to co-opt susceptible servers and expand its scale.
"Muhstik is a well-known threat targeting IoT devices and Linux-based servers, notorious for its ability to infect devices and utilize them for cryptocurrency mining and launching Distributed Denial

Muhstik Botnet Exploiting Apache RocketMQ Flaw to Expand DDoS Attacks

A list of topics we covered in the week of May 27 to June 2 of 2024

June 1, 2024 - Live Nation has confirmed what everyone has been speculating on for the last week: Ticketmaster has suffered a data breach.

May 31, 2024 - This post will help users find out if their Windows device has been added to the 911 S5 botnet by a malicious VPN application

May 30, 2024 - Scammers and other cybercriminals love to use our name to defraud their victims. Here's what to look out for.

May 30, 2024 - A database has been put up for sale that allegedly contains the data of 560 million Ticketmaster users. But is it real?

May 29, 2024 - This post explains how to disable various location services on Android devices.

 A week in security (May 27 &#8211; June 2) 

Plus: A whistleblower claims the Biden administration falsified a report on Gaza, “Operation Endgame” disrupts the botnet ecosystem, and more.

If you have a crypto wallet containing a fortune but forgot the password, all may not be lost. This week, a pair of researchers revealed how they cracked an 11-year-old password to a crypto wallet containing roughly $3 million in bitcoins. With a lot of skill and a bit of luck, the researchers uncovered a flaw in how a previous version of the RoboForm password manager generates passwords that allowed them to accurately figure out the missing login and access the buried treasure.

Police in Western countries are using a new tactic to go after cybercriminals who remain physically out of reach of US law enforcement: trolling. The recent takedowns of ransomware groups like LockBit go beyond the traditional disruption of online infrastructure to include messages on seized websites meant to mess with the minds of criminal hackers. Experts say these trollish tactics help sow distrust between cybercriminals—who already have ample reason to distrust one another.

A graduate student at the University of Minnesota has been charged under the Espionage Act for photographing a shipyard in Virginia where the US Navy assembles nuclear submarines and other vessels whose components are classified. What makes the case novel, however, is that he allegedly took the photos with a drone, making his prosecution likely the first of its kind in the US.

It was a big week for cops taking down botnets (as you’ll read more about below). This week, the US announced that it had disrupted what may be the “largest botnet ever,” according to FBI director Christopher Wray. The botnet, called 911 S5, included some 19 million hijacked IP addresses around the world, which authorities say were used to carry out billions of dollars in Covid-19 relief fraud, make bomb threats, traffic in child sexual abuse material, and more.

But that’s not all. Each week, we round up the security news we didn’t cover in depth ourselves. Click the headlines to read the full stories, and stay safe out there.

More than a half-million internet routers were disabled last year in a malware attack carried out by an unknown threat actor targeting a US internet service provider. Launched in late October, the attack—one of the largest ever against the sector—reportedly disrupted internet across several Midwestern states. The attack was first disclosed this week by the security firm Black Lotus Labs, which did not identify the specific company affected. However, Ars Technica reports that the incident appears to have impacted a ISP called Windstream, which provides internet service to 18 states in the US Midwest and South.

Black Lotus Labs researchers say the attacker used off-the-shelf Chalubo malware to gain access to the routers, and that their firmware was eventually overwritten, effectively bricking the devices. The disruption resulted in a flood of complaints on a forum about the damaged routers. “The routers now just sit there with a steady red light on the front,” a user wrote on the DSLReports forum. “They won't even respond to a RESET.”

**Whistleblower Claims US “Falsified” Gaza Report to Protect Arms Sales**

The Biden administration allegedly fabricated the conclusion of a report released in early May which found the United States did not have “complete information to verify” whether US-made weapons had been used by Israel in contravention of international humanitarian law, according to a whistleblower, Stacy Gilbert, a senior civil-military expert who resigned in protest this week from the US State Department. Gilbert says the State Department experts who compiled the report clearly implicated Israel in limiting the amount of food and medical supplies able to reach Gaza; however, the report was reportedly taken out of the experts’ hands and then “edited at a higher level.”

The report consisted of a mandatory national security assessment that, had Israel been found in violation of humanitarian law, would have obligated the US to discontinue its arms sales. At the time of the report’s publishing, critics of the administration’s Gaza policy accused the White House of willfully ignoring the conduct of Israeli forces attempting to disrupt food deliveries to the famine-stricken Palestinian territory. Gilbert is the second US official to publicly resign this week in protest over the US’s involvement in the attacks.

**“Operation Endgame” Knocks Down Botnet Underworld**

An international coalition of law enforcement agencies, cybersecurity firms, and other organizations announced this week the disruption of large swathes of the global botnet ecosystem. Branded “Operation Endgame,” the effort targeted malware “droppers,” or malicious software that’s used to infiltrate a machine so it can be used to infect a machine with additional malware more easily. The droppers Operation Endgame targeted include IcedID, SystemBC, Pikabot, Smokeloader, Bumblebee, and Trickbot, according to Europol, which says authorities seized more than 100 servers and 2,000 websites allegedly linked to cybercriminal activity. Law enforcement also arrested four “high-value” individuals; Germany added eight others to its most-wanted list. One of the “main suspects,” according to Europol, amassed a cryptocurrency fortune worth 69 million euros ($74 million) by renting out infrastructure for ransomware attacks. And the action isn’t over: The Operation Endgame website indicates a new announcement coming in the next several days.

**Pro-Israel Influence Op, Driven by AI, Targeted Americans on Meta Apps**

Meta says it has shut down an AI-driven network comprising hundreds of fake Facebook and Instagram accounts linked to an Israeli business intelligence firm. The company, Stoic, is accused of accepting contracts to propagate inauthentic pro-Israel content across the platforms for the purpose of manipulating North American users’ political views. Meta claimed Stoic’s influence operation was still in its “audience building” phase, “before they were able to gain engagement among authentic communities.”

Mysterious Hack Destroyed 600,000 Internet Routers

This post will help users find out if their Windows device has been added to the 911 S5 botnet by a malicious VPN application

On May 29, 2024, the US Department of Justice (DOJ) announced it had dismantled what was likely the world’s largest botnet ever. This botnet, called “911 S5,” infected systems at over 19 million IP addresses across more than 190 countries. The main sources of income for the operators, who stole a billions of dollars across a decade, came from committing pandemic and unemployment fraud, and by selling access to child exploitation materials.

The botnet operator generated millions of dollars by offering cybercriminals access to these infected IP addresses. As part of this operation, a Chinese national, YunHe Wang, was arrested. Wang is reportedly the proprietor of the popular service.

Of the infected Windows devices, 613,841 IP addresses were located in the United States. The DOJ also called the botnet a residential proxy service. Residential proxy networks allow someone in control to rent out a residential IP address which then can be used as a relay for their internet communications. This allows them to hide their true location behind the residential proxy. Cybercriminals used this service to engage in cyberattacks, large-scale fraud, child exploitation, harassment, bomb threats, and export violations.

To set up this botnet, Wang and his associates provided users with free, illegitimate VPN applications that were created to connect to the 911 S5 service. Unaware of the proxy backdoor, once users downloaded and installed these VPN applications, they unknowingly became part of the 911 S5 botnet.

Sometimes the VPN applications were bundled with games and other software and installed without user consent.

For this reason, the FBI has published a public service announcement (PSA) to help users find out if they have been affected by this botnet.

Users can start by going over this list of malicious VPN applications associated with the 911 S5 botnet:

*   MaskVPN
*   DewVPN
*   PaladinVPN
*   ProxyGate
*   ShieldVPN
*   ShineVPN

If you have one of these VPN applications installed, sometimes you can find an uninstaller located under the Start menu option of the VPN application. If present, you can use that uninstall option.

If the application doesn’t present you with an uninstall option, then follow the steps below to attempt to uninstall the application:

*   Click on the Start menu (Windows button) and type “Add or remove programs” to bring up the “Add and Remove Programs” menu.
*   Search for the name of the malicious VPN application.
*   Once you find the application in the list, click on the application name, and select the “Uninstall” option.

Once you have uninstalled the application, you will want to make sure it’s no longer active. To do that, open the Windows Task manager. Press Control+Alt+Delete on the keyboard and select the “Task Manager” option or right-click on the Start menu (Windows button) and select the “Task Manager” option.

In Task Manager look under the “Process” tab for the following processes:

*   MaskVPN (mask\_svc.exe)
*   DewVPN (dew\_svc.exe)
*   PaladinVPN (pldsvc.exe)
*   ProxyGate (proxygate.exe, cloud.exe)
*   ShieldVPN (shieldsvc.exe)
*   ShineVPN (shsvc.exe)

_Example by FBI showing processes associated with ShieldVPN in Task Manager_

If found, select the service related to one of the identified malicious software applications running in the process tab and select the option “End task” to attempt to stop the process from running.

Or, download Malwarebytes Premium (there is a free trial) and run a scan.

Whether you’re using the free or paid version of the app, you can manually run a scan to check for threats on your device. 

1.  Open the app.
2.  On the main dashboard, click the **Scan** button.
3.  A progress page appears while the scan runs.
4.  After the scan finishes, it displays the Threat scan summary.
    *   **If the scan detected no threats:** Click **Done**.
    *   **If the scan detected threats on your device:** Review the threats found on your computer. From here, you can manually quarantine threats by selecting a detection and clicking **Quarantine**.
5.  Click **View Report** or **View Scan Report** to see a history of prior scans. After viewing the threat report, close the scanner window.

If neither of these options, including the Malwarebytes scan, resolve the problem, the FBI has more elaborate instructions. You can also contact the Malwarebytes Support team to assist you.

**We don’t just report on privacy—we offer you the option to use it.**

Privacy risks should never spread beyond a headline. Keep your online privacy yours by using Malwarebytes Privacy VPN.

 How to tell if a VPN app added your Windows device to a botnet 

By Waqas
Europol led Operation Endgame, the largest operation against botnets to date, focused on dismantling the infrastructure of malicious…
This is a post from HackRead.com Read the original post: 4 Arrested as Operation Endgame Disrupts Ransomware Botnets

Europol led Operation Endgame, the largest operation against botnets to date, focused on dismantling the infrastructure of malicious dropper networks that enabled ransomware attacks.

In a major crackdown on cybercrime, Europol announced on Monday the successful completion of Operation Endgame, a massive international effort to disrupt and dismantle dropper networks, including IcedID, SystemBC, Smokeloader, Trickbot, Pikabot, and Bumblebee.

The three-day operation, coordinated from Europol’s headquarters, resulted in the arrest of four suspects, the execution of over 16 searches, and the takedown of over 100 servers and 2,000 domains linked to these criminal activities.

For your information, Droppers are malicious software tools designed to bypass security measures and deploy additional harmful programs, such as viruses, ransomware, or spyware, onto a target system. They are often used during the first stage of a malware attack and play a major role in the deployment of ransomware.

Operation Endgame, the largest-ever operation against botnets, targeted the infrastructure of these dropper networks, which facilitated attacks with ransomware and other malicious software.

The operation was led by France, Germany, and the Netherlands and supported by Eurojust, Denmark, the United Kingdom, and the United States. Other countries, including Armenia, Bulgaria, Lithuania, Portugal, Romania, Switzerland, and Ukraine, also supported the operation with various actions, such as arrests, searches, and seizures of servers and domains.

The operation was also supported by several private partners at national and international level, including Bitdefender, Cryptolaemus, Sekoia, Shadowserver, Team Cymru, Prodaft, Proofpoint, NFIR, Computest, Northwave, Fox-IT, HaveIBeenPwned, Spamhaus, DIVD, abuse.ch, and Zscaler.

The operation resulted in the arrest of one suspect in Armenia and three in Ukraine, as well as the execution of 16 searches in Armenia, the Netherlands, Portugal, and Ukraine. Over 100 servers were taken down or disrupted in Bulgaria, Canada, Germany, Lithuania, the Netherlands, Romania, Switzerland, the United Kingdom, the United States, and Ukraine. Additionally, over 2,000 domains under the control of law enforcement were seized.

Further investigations, as per Europol’s press release, revealed that one of the main suspects earned over €69 million ($74 million – £58 million) in cryptocurrency by renting out criminal infrastructure sites to deploy ransomware. The suspect’s transactions are being monitored, and legal permission to seize these assets has been obtained.

The operation is a major blow to the dropper industry and a step in the fight against ransomware and other forms of cybercrime. However, Europol warned that Operation Endgame does not end here and that new actions will be announced on the official website of Operation Endgame.

The success of this operation shows cyber criminals may have become sophisticated but law enforcement agencies would always be a step ahead. It also highlights the need for continuous funding and innovation in cybersecurity measures and the importance of international cooperation in addressing online criminal activity.

1.  Finnish Dark Web Marketplace PIILOPUOTI Seized
2.  FBI Disrupts Chinese State-Backed Volt Typhoon’s KV Botnet
3.  LockBit Ransomware Gang Domains Seized in Global Operation
4.  Goldoon Botnet Targeting D-Link Devices, Exploits 9-Year-Old Flaw
5.  Operator of Major Proxy Botnet ‘IPStorm’ Arrested, Pleads Guilty in US

4 Arrested as Operation Endgame Disrupts Ransomware Botnets

Law enforcement agencies in the United States and Europe today announced Operation Endgame, a coordinated action against some of the most popular cybercrime platforms for delivering ransomware and data-stealing malware. Dubbed "the largest ever operation against botnets," the international effort is being billed as the opening salvo in an ongoing campaign targeting advanced malware "droppers" or "loaders" like IcedID, Smokeloader and Trickbot.

Law enforcement agencies in the United States and Europe today announced **Operation Endgame**, a coordinated action against some of the most popular cybercrime platforms for delivering ransomware and data-stealing malware. Dubbed “the largest ever operation against botnets,” the international effort is being billed as the opening salvo in an ongoing campaign targeting advanced malware “droppers” or “loaders” like **IcedID**, **Smokeloader** and **Trickbot**.

A frame from one of three animated videos released today in connection with Operation Endgame.

Operation Endgame targets the cybercrime ecosystem supporting droppers/loaders, slang terms used to describe tiny, custom-made programs designed to surreptitiously install malware onto a target system. Droppers are typically used in the initial stages of a breach, and they allow cybercriminals to bypass security measures and deploy additional harmful programs, including viruses, ransomware, or spyware.

Droppers like IcedID are most often deployed through email attachments, hacked websites, or bundled with legitimate software. For example, cybercriminals have long used paid ads on Google to trick people into installing malware disguised as popular free software, such as Microsoft Teams, Adobe Reader and Discord. In those cases, the dropper is the hidden component bundled with the legitimate software that quietly loads malware onto the user’s system.

Droppers remain such a critical, human-intensive component of nearly all major cybercrime enterprises that the most popular have turned into full-fledged cybercrime services of their own. By targeting the individuals who develop and maintain dropper services and their supporting infrastructure, authorities are hoping to disrupt multiple cybercriminal operations simultaneously.

According to a statement from the European police agency **Europol**, between May 27 and May 29, 2024 authorities arrested four suspects (one in Armenia and three in Ukraine), and disrupted or took down more than 100 Internet servers in Bulgaria, Canada, Germany, Lithuania, the Netherlands, Romania, Switzerland, the United Kingdom, United States and Ukraine. Authorities say they also seized more than 2,000 domain names that supported dropper infrastructure online.

In addition, Europol released information on eight fugitives suspected of involvement in dropper services and who are wanted by Germany; their names and photos were added to Europol’s “Most Wanted” list on 30 May 2024.

A “wanted” poster including the names and photos of eight suspects wanted by Germany and now on Europol’s “Most Wanted” list.

“It has been discovered through the investigations so far that one of the main suspects has earned at least EUR 69 million in cryptocurrency by renting out criminal infrastructure sites to deploy ransomware,” Europol wrote. “The suspect’s transactions are constantly being monitored and legal permission to seize these assets upon future actions has already been obtained.”

There have been numerous such coordinated malware takedown efforts in the past, and yet often the substantial amount of coordination required between law enforcement agencies and cybersecurity firms involved is not sustained after the initial disruption and/or arrests.

But a new website erected to detail today’s action — operation-endgame.com — makes the case that this time is different, and that more takedowns and arrests are coming. “Operation Endgame does not end today,” the site promises. “New actions will be announced on this website.”

A message on operation-endgame.com promises more law enforcement and disruption actions.

Perhaps in recognition that many of today’s top cybercriminals reside in countries that are effectively beyond the reach of international law enforcement, actions like Operation Endgame seem increasingly focused on mind games — i.e., trolling the hackers.

Writing in this month’s issue of _Wired_, **Matt Burgess** makes the case that Western law enforcement officials have turned to psychological measures as an added way to slow down Russian hackers and cut to the heart of the sweeping cybercrime ecosystem.

“These nascent psyops include efforts to erode the limited trust the criminals have in each other, driving subtle wedges between fragile hacker egos, and sending offenders personalized messages showing they’re being watched,” Burgess wrote.

When authorities in the U.S. and U.K. announced in February 2024 that they’d infiltrated and seized the infrastructure used by the infamous **LockBit** ransomware gang, they borrowed the existing design of LockBit’s victim shaming website to link instead to press releases about the takedown, and included a countdown timer that was eventually replaced with the personal details of LockBit’s alleged leader.

The feds used the existing design on LockBit’s victim shaming website to feature press releases and free decryption tools.

The Operation Endgame website also includes a countdown timer, which serves to tease the release of several animated videos that mimic the same sort of flashy, short advertisements that established cybercriminals often produce to promote their services online. At least two of the videos include a substantial amount of text written in Russian.

The coordinated takedown comes on the heels of another law enforcement action this week against what the director of the FBI called “likely the world’s largest botnet ever.” On Wednesday **U.S. Department of Justice** (DOJ) announced the arrest of **YunHe Wang**, the alleged operator of the ten-year-old online anonymity service **911 S5**. The government also seized 911 S5’s domains and online infrastructure, which allegedly turned computers running various “free VPN” products into Internet traffic relays that facilitated billions of dollars in online fraud and cybercrime.

‘Operation Endgame’ Hits Malware Delivery Platforms

The U.S. Department of Justice (DoJ) on Wednesday said it dismantled what it described as "likely the world's largest botnet ever," which consisted of an army of 19 million infected devices that was leased to other threat actors to commit a wide array of offenses.
The botnet, which has a global footprint spanning more than 190 countries, functioned as a residential proxy service known as 911 S5.

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