Mobile malware-as-a-service operators are upping their game by automatically churning out hundreds of unique samples on a whim.

Source: Wodthikorn Phutthasatchathum via Alamy Stock Photo

North of 1,000 samples of the Godfather mobile banking Trojan are circulating in dozens of countries worldwide, targeting hundreds of banking apps.

First discovered in 2022, Godfather — which can record screens and keystrokes, intercepts two-factor authentication (2FA) calls and texts, initiates bank transfers, and more — has quickly become one of the most widespread malware-as-a-service offerings in cybercrime, especially mobile cybercrime. According to Zimperium's 2023 "Mobile Banking Heists Report," as of late last year, Godfather was targeting 237 banking apps spread across 57 countries. Its affiliates exfiltrated stolen financial information to at least nine countries, primarily in Europe and including the US.

All that success drew attention, so, to prevent security software from spoiling the party, Godfather's developers have been automatically generating new samples for their customers at a near industrial scale.

Other mobile malware developers across the spectrum have started doing the same thing. "What we're seeing is that malware campaigns are starting to get bigger and bigger," warns Nico Chiaraviglio, chief scientist at Zimperium, who will host a session on this and other mobile malware trends at RSAC in May.

Besides Godfather and other known families, Chiaraviglio is tracking an even bigger, still-under-wraps mobile malware family with more than 100,000 unique samples in the wild. "So that's crazy," he says. "We haven't seen that number of samples in a single malware before, ever. This is definitely a trend."

**Banking Trojans Spawn Hundreds of Samples**

Mobile security is already lagging far behind security for desktops. "In the '90s, no one was really using antivirus on desktop computers, and that's kind of where we are now. Today, only one of four users are really using some sort of mobile protection. Twenty-five percent of devices are completely unprotected, compared with desktop, at 85%," Chiaraviglio laments.

Mobile threats, meanwhile, are leveling up fast. One way they're doing so is by generating so many different iterations that antivirus programs — which profile malware by their unique signatures — have trouble correlating one infection with the next.

Consider that at the time of its initial discovery in 2022, according to Chiaraviglio, there were fewer than 10 samples of Godfather in the wild. By the end of last year, that number had risen a hundredfold.

Its developers have clearly been autogenerating unique samples for customers to help them avoid detection. "They could just be scripting everything — that would be a way to automate it. Another way would be to use large language models, as code assistance can really speed up the development process," Chiaraviglio says.

Other banking Trojan developers have followed the same approach, if at a lesser scale. In December, Zimperium tallied 498 samples of Godfather's close competitor, Nexus, 300 samples of Saderat, and 123 of PixPirate.

**Can Security Software Keep Up?**

Security solutions that tag malware by signature will find difficulty keeping track of hundreds and thousands of samples per family.

"Maybe there is a lot of code reuse between different samples," Chiaraviglio says, something he suggests adaptive solutions can use to correlate related malware with different signatures. Alternatively, instead of the code itself, defenders can use artificial intelligence (AI) to focus on the behaviors of the malware. With a model that can do that, Chiaraviglio says, "it doesn't really matter how much you change the code or the way the application looks, we will still be able to detect it."

But, he admits, "at the same time, this is always a race. We do something \[to adjust\], then the attacker does something to evolve to our predictions. \[For example\], they can ask \[a large language model\] to mutate their code as much as it can. This would be the realm of polymorphic malware, which is not something that happens a lot on mobile, but we might start seeing way more of that."

**About the Author(s)**

Nate Nelson is a freelance writer based in New York City. Formerly a reporter at Threatpost, he contributes to a number of cybersecurity blogs and podcasts. He writes "Malicious Life" -- an award-winning Top 20 tech podcast on Apple and Spotify -- and hosts every other episode, featuring interviews with leading voices in security. He also co-hosts "The Industrial Security Podcast," the most popular show in its field.

Godfather Banking Trojan Spawns 1.2K Samples Across 57 Countries

Plus, new details emerge on the Scattered Spider cybercrime network and ArcaneDoor.

Thursday, April 25, 2024 14:00

I wrote last week about the problems arising from the massive backlog of vulnerabilities at the U.S. National Vulnerability Database.  

Thousands of CVEs are still without analysis data, and the once-reliable database of every single vulnerability that’s disclosed and/or patched is now so far behind, it could take up to 100 days for the National Institute of Standards and Technology (NIST) to catch up, and that would be assuming no new vulnerabilities are disclosed during that period. 

While the U.S. government and NIST try to sort out a potential solution, and hopefully await more funding and restructuring, NIST says it’s hoping to launch a consortium to help either rebuild the NVD or create a replacement.  

Other security experts have floated the idea of other companies or organizations creating a brand-new solution of their own. The main problem with that is, what’s in it for them?  

What works about the NVD is that it’s funded by the U.S. government, so the money is always coming in to help fund the workforce and at least gives MITRE and the other private companies who contribute to the NVD motivation to keep working on it. 

To start up a whole new database of \*every\* CVE out there would take countless man-hours, and then what at the end? Would the company or person(s) who created it start charging for access? 

Several open-source solutions have_man-hours_ popped up over the past few weeks, such as “NVD Data Overrides,” which “is meant to provide additional data that is currently missing from NVD.” However, these types of volunteer projects still can’t assign CVSS scores, because only the NVD is authorized to hand out official NVD CVSS scores. 

This brings up another problem for private companies that may want to develop a solution: Do they want to play referee?  

Sometimes, when there’s a disagreement on how severe a vulnerability is and what severity score to assign it, the NVD will weigh in and provide their own, independently calculated CVSS score. Who really wants to be the “bad guy” to get between a massive tech company like Microsoft or Apple and a security researcher saying a vulnerability is a 9.5 out of 10 CVSS? 

I absolutely give major credit to any volunteers or open-source developers who are working on their own solutions for essentially nothing — but how long can we expect them to keep maintaining these databases? 

Unfortunately, I don’t have a great answer for this, either. I’m far from an expert on vulnerability management, nor do I have any connections to the federal government. But I do feel the onus is on the government to come up with a solution, and potentially provide incentives for companies and researchers to participate in this new proposed consortium because I don’t see the incentives there for the private sector to come up with their own solution.  

**The one big thing **

ArcaneDoor is a new campaign that is the latest example of state-sponsored actors targeting perimeter network devices from multiple vendors. Talos and Cisco PSIRT recently identified a previously unknown actor, now tracked as UAT4356 by Talos and STORM-1849 by the Microsoft Threat Intelligence Center. This actor utilized bespoke tooling that demonstrated a clear focus on espionage and an in-depth knowledge of the devices that they targeted, hallmarks of a sophisticated state-sponsored actor. UAT4356 deployed two backdoors as components of this campaign, “Line Runner” and “Line Dancer,” which were used collectively to conduct malicious actions on-target, which included configuration modification, reconnaissance, network traffic capture/exfiltration and potentially lateral movement.   

**Why do I care? **

Gaining a foothold on these devices allows an actor to directly pivot into an organization, reroute or modify traffic and monitor network communications. In the past two years, we have seen a dramatic and sustained increase in the targeting of these devices in areas such as telecommunications providers and energy sector organizations — critical infrastructure entities that are likely strategic targets of interest for many foreign governments. As a critical path for data into and out of the network, these devices need to be routinely and promptly patched; using up-to-date hardware and software versions and configurations; and be closely monitored from a security perspective. 

**So now what? **

There are some known indicators of compromise that customers can look for if they suspect they may have been targeted in this campaign. First, organizations should look for any flows to/from ASA devices to any of the IP addresses present in the IOC list provided at the bottom of this blog. This is one indication that further investigation is necessary. Potential targets can also follow the steps detailed in the Cisco ASA Forensic Investigation Procedures for First Responders. When following these procedures, first responders should NOT attempt to collect a core dump or reboot the device if they believe that the device has been compromised, based on the lina memory region output. Talos also released some Snort signatures to detect the activity on the wire including access attempts. Snort Signatures 63139, 62949 and 45575 have been released to detect the implants or associated behaviors. 

**Top security headlines of the week **

**A previously known Windows print spooler bug is still being actively exploited, according to Microsoft.** The company’s threat research team recently disclosed that APT28, a well-known Russian state-sponsored actor, is exploiting the vulnerability to deliver a previously unknown malware called “GooseEgg.” Microsoft disclosed and patched CVE-2022-38028 in October 2022, but APT28 may have been exploiting it as far back as 2020. The actor’s exploitation involved modifying a JavaScript constraints file in the printer spooler and executing it with SYSTEM-level permissions. The new research prompted the U.S. Cybersecurity and Infrastructure Security Agency (CISA) to add CVE-2022-38028 to its Known Exploited Vulnerabilities (KEV) catalog. If installed, GooseEgg can load other applications with System-level permissions and allow the adversary to execute remote code on the targeted device or deploy other backdoors. Another set of print spooler vulnerabilities, called PrintNightmare, made headlines in July 2021, though no one reported active exploitation of that vulnerability at the time. (SC Magazine, Security Week) 

**A new investigation revealed how members of the group Scattered Spider are partnering with Russian state-sponsored actors to carry out ransomware attacks.** Scattered Spider is made up of younger individuals based out of the U.S., U.K. and Canada. They are primarily English speakers who have been blamed for several notable ransomware attacks, including one against MGM Casinos that disrupted operations at several casinos and hotels last year. The group specializes in social engineering, more recently using LinkedIn to steal employee information and use that to infiltrate corporate networks. Members, some as young as teenagers, are connecting over the dark web and online forums like Discord and use their advanced knowledge of Western civilization to provide crucial details to Russian actors. The “60 Minutes” investigation also included new details about The Community (aka “The Comm,” the online collection of hackers who like to brag about their recent cybercrimes, often through Telegram. (CBS News) 

**The U.S. government has re-upped a law that expands government surveillance by opening the door for private companies to partner with the government on these types of activities.** The controversial Foreign Intelligence Surveillance Act (FISA) was re-approved just hours after it lapsed. The White House and proponents in U.S. Congress argued that the powers granted in Section 702 of the FISA helps prevent the spread of terrorism and cyber attacks and that any lapse in those powers would harm the government’s ability to gather crucial intelligence. However, privacy advocates say that the FISA is an overreach, and provides too much power for private companies to potentially spy on consumers. The bill also includes a new definition of “electronic communications service provider,” which could allow the U.S. government to force Big Tech companies and telecommunications providers to hand over users’ data if requested. (NBC News, TechCrunch) 

**Can’t get enough Talos? **

*   Talos Takes Ep. #180: What are the dangers of enabling sideloading and third-party apps? 
*   Suspected CoralRaider continues to expand victimology using three information stealers 
*   Brute-force attacks surge worldwide, warns Cisco Talos    
*   Cisco Warns of Massive Surge in Password-Spraying Attacks on VPNs 
*   Rare Computer Virus Detected in Ukrainian Network, Confidential Document Potentially Compromised 

**Upcoming events where you can find Talos **

**CARO Workshop 2024** **(May 1 - 3)** 

_Arlington, Virginia_

> Over the past year, we’ve observed a substantial uptick in attacks by YoroTrooper, a relatively nascent espionage-oriented threat actor operating against the Commonwealth of Independent Countries (CIS) since at least 2022. Asheer Malhotra's presentation at CARO 2024 will provide an overview of their various campaigns detailing the commodity and custom-built malware employed by the actor, their discovery and evolution in tactics. He will present a timeline of successful intrusions carried out by YoroTrooper targeting high-value individuals associated with CIS government agencies over the last two years.

**RSA** **(May 6 - 9)** 

_San Francisco, California_    

**Cisco Live** **(June 2 - 6)** 

_Las Vegas, Nevada_  

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

_This section will be on a brief hiatus while we work through some technical difficulties._ _Several open-source solutions have_

The private sector probably isn’t coming to save the NVD

Caliptra 1.0 offers a blueprint for integrating security features directly into microprocessors.

Source: Alexmillos via Alamy Stock Vector

A consortium of top chip makers have finalized the first version of Caliptra, a specification to add zero-trust security features directly inside silicon.

The Caliptra 1.0 specification has hardware and software blocks providing multiple protection layers for encrypted data on chips.

"We believe Caliptra is a foundational aspect to the future of confidential computing and couldn't be more excited to reach our 1.0 milestone," says Andrés Lagar-Cavilla, a distinguished engineer at Google. Caliptra is currently being integrated by companies across the ecosystem into chips that will start to appear in the market in 2026.

Security-focused hardware exists, but usually as separate components on the hardware. At the moment, chips typically access security features that are available as separate hardware components on the motherboard. The Caliptra specification provides a blueprint to embed the security features into the chip instead of accessing those hardware cores.

For example, the Trusted Platform Module (TPM), which is required on all machines running Windows 11, is a secure processor carrying out cryptographic functions, such as Windows Hello authentication and BitLocker drive encryption. Caliptra could make possible an on-silicon version of TPM.

The specification was built around the concept of confidential computing, an emerging technology focused on building walls to protect data and programs during storage, transport, and execution. Users and code are verified before being allowed to enter the secure area, after which they can run programs.

**Caliptra-Spec Chips on the Way?**

The Caliptra specification aims to fend off cyberattacks and protect from vulnerabilities, such as Meltdown and Spectre, which exposed confidential user data to hackers.

Caliptra's protection layers on silicon include a root-of-trust block, in which code, users, and firmware are isolated, verified, and authenticated. The spec extends to protecting firmware and ROMs. The root-of-trust layer also detects and recovers data that may be corrupted.

The specification is now available for tape-in, which means it is also ready for testing for chips that may be going into production. Google's Lagar-Cavilla says the company is actively integrating Caliptra in first-party silicon designs and collaborating with suppliers to ensure their system-on-chips — across CPUs, GPUs, DPUs, BMCs, SSDs, and more — include Caliptra.

Caliptra is an open source technology, so chip makers can adopt and modify it for free.

A company called Antmicro is developing a Caliptra-based security core for an emerging chip architecture called RISC-V. The technology is an alternative to the dominant x86 and ARM instruction set architectures. RISC-V has a modular design that makes it easier to include technologies like Caliptra in production-level silicon.

Google is a lead developer of Caliptra, working alongside Advanced Micro Devices, Microsoft, Marvell, and NVIDIA. The Linux Foundation's CHIPS Alliance is managing the development of the specification.

Intel is one of the big names in chips missing from the group of companies developing Caliptra. Intel is pushing its own on-chip security technology to protect user data and chips from hackers.

**About the Author(s)**

Agam Shah has covered enterprise IT for more than a decade. Outside of machine learning, hardware, and chips, he's also interested in martial arts and Russia.

Chip Giants Finalize Specs Baking Security Into Silicon

Cyberattacks on logistics are becoming increasingly common, and the potential impact is enormous.

Chahak Mittal, Cybersecurity GRC Manager, Universal Logistics Holdings, Inc.

April 25, 2024

5 Min Read

Source: Rawf8 via Alamy Stock Photo

COMMENTARY

Imagine you're standing in a bustling city, surrounded by the symphony of commerce. The exchange of goods and the flow of transportation are all around you. This is the heartbeat of our global economy. But what would happen if this heartbeat were to be disrupted? If the very lifeblood of our interconnected world were to falter — or worse, come to a grinding halt?

The consequences would be catastrophic. Imagine empty shelves in grocery stores, gas stations running out of fuel, and hospitals unable to get the supplies they need. Imagine widespread panic and social unrest.

This is not just a hypothetical scenario. It's a real threat we need to take seriously. Cyberattacks on logistics are becoming increasingly common, and the potential impact is enormous. Logistics is the backbone of our global economy. It's the process that keeps the world's shelves stocked and the wheels of commerce turning.

**Cyberattacks on Logistics May Have Severe Ramifications**

Let's first discuss why cyberattacks on logistics are so concerning.

Remember back to the haunting early days of the pandemic. Lockdown measures paralyzed entire nations, factories fell silent, and transportation came to a grinding halt. The repercussions were profound, as essential goods faced severe delays, and shortages left many in dire straits. The fabric of our interconnected world was put to the test, and the challenges were immense.

Four years later, we see news headlines about cyberattacks on Ukraine's logistics and its global impact. Think for a moment about the unimaginable consequences if a cyberattack were to disrupt logistics on a larger scale than COVID-19 or even exceed its impact.

It is unsettling that a nation could be brought to its knees not by an army or weapons but by code on a computer. This prospect cannot be ignored, especially given that the transport and logistics industry is undergoing a digital transformation.

Companies are increasingly using digitalization tools to streamline all processes, from warehouse inventory management to vehicle tracking. This is a good thing, of course. Digitalization can help to improve efficiency, reduce costs, and improve customer service. But there is a dark side to digitalization. The more digitized a company is, the more vulnerable it is to cyberattacks.

**An Expanded Battlefield**

Let's now delve into the second part of our journey: understanding how cyberattacks on logistics can be weaponized. Throughout history, proper logistics have always been the secret weapon behind any victorious endeavor, whether in war or other ventures. From the days of the Civil War, where horses, mules, and wagons provided armies the food, equipment, and ammunition they needed, to the modern era with colossal military operations with intricate supply chains, logistics have always been the beating heart of success.

Now the battlefield has expanded into the digital realm. The logistics that have propelled economies and nations forward are now vulnerable to a new kind of adversary –— one that wields not swords and shields, but lines of code and malicious intent.

But let's go even deeper. What if these cyberattacks on logistics were not just the work of lone hackers seeking chaos? What if they were orchestrated by state actors with strategic intent? The Russia-Ukraine conflict has demonstrated the potential of such scenarios. The cyber offensive aimed at Ukraine reached far beyond its borders, affecting global supply chains and sending shockwaves through economies. 

In this ever-evolving digital landscape, a new kind of arsenal is being amassed in the shadows: stockpiled zero-day vulnerabilities. Just as nations once accumulated weapons to safeguard their sovereignty, they now amass vulnerabilities as digital ammunition. These zero-day vulnerabilities, arcane exploits unknown even to software creators, have become potent tools of cyber warfare.

Imagine the power of a nation armed with a stockpile of these vulnerabilities. It can strike silently, crippling logistical infrastructures without firing a single shot. This reality becomes more tangible as each day passes. The Russia-Ukraine conflict showcases this new arsenal's alarming potential, serving as a reminder that our reliance on interconnected logistics is both a strength and a vulnerability.

**Fortifying Our Defenses**

So, where do we go from here? How can we fortify our logistical arteries against these emerging threats? Just as the strength of a nation's military once depended on its ability to ensure a steady flow of supplies to the frontlines, today's battles are won by safeguarding the flow of data, goods, and services.

The lessons of history remain relevant — a robust logistics network is not only essential for prosperity, but it is also a fundamental pillar of security. We must invest in cyber-defense strategies that mirror the importance we place on physical defense. Collaboration between governments, industries, and international partners is paramount. The private sector, too, holds a pivotal role.

As we embrace digitalization, we must do so with cybersecurity at the forefront. Companies must not only prioritize efficiency but also fortify their digital infrastructure against potential attacks. 

Strong alliances, collaborative diplomacy, and international cooperation are essential to our defense strategy. Just as alliances between nations bolster our military might, alliances between industries and governments can fortify cybersecurity. By harnessing the power of cyber and soft power in harmony, we can navigate the intricate dance of modern warfare.

The time to act is now. We stand at a crossroads where the path of progress intersects with the shadows of uncertainty. The interconnectedness that has fueled our global economy is also its Achilles' heel. Cyberattacks on logistics are not a distant possibility; they are a sobering reality.

The disruption of our supply chains, the paralysis of our economies — these are the stakes we face. But history has shown us that challenges can become catalysts for innovation. We can forge a new paradigm, one where technology and diplomacy converge to safeguard our way of life.

It is a future where alliances are not just forged on battlefields, but in virtual boardrooms and digital summits, and where the strength of a nation's cybersecurity is as integral to its defense strategy as its military might.

**About the Author(s)**

Cybersecurity GRC Manager, Universal Logistics Holdings, Inc.

Chahak Mittal is a Certified Information Systems Security Professional (CISSP) and Cybersecurity Governance, Risk, and Compliance Manager at Universal Logistics. She is a cybersecurity leader deeply committed to knowledge sharing and community engagement. Through her roles as a Judge at Globee Awards, Major League Hacking (MLH) Hackathons, and as a dedicated cybersecurity instructor volunteer in the Microsoft TEALS Program, she has actively contributed to the cybersecurity ecosystem. Chahak's active involvement in organizations such as the Information Systems Security Association and SecureWorld's Detroit Advisory Council has been instrumental in her pursuit of staying at the forefront of industry trends and challenges. Furthermore, she has channeled her insights into thought-provoking cybersecurity articles, published on SecureWorld.io, ISC2, and CyberDefense Magazine, making a meaningful contribution to the field's intellectual discourse.

Digital Blitzkrieg: Unveiling Cyber-Logistics Warfare

The North Korea-linked threat actor known as Lazarus Group employed its time-tested fabricated job lures to deliver a new remote access trojan called Kaolin RAT.
The malware could, "aside from standard RAT functionality, change the last write timestamp of a selected file and load any received DLL binary from [command-and-control] server," Avast security researcher Luigino

North Korea's Lazarus Group Deploys New Kaolin RAT via Fake Job Lures

Attacks by a previously unknown threat actor leveraged two bugs in firewall devices to install custom backdoors on several government networks globally.

Source: Znakki via Shutterstock

A state-sponsored threat actor has exploited two Cisco zero-day vulnerabilities in firewall devices to target the perimeter of government networks with two custom-built backdoors, in a global cyber-espionage campaign.

Dubbed "ArcaneDoor," the campaign by the previously unknown actor — which researchers from Cisco Talos track as UAT4356 — has targeted Cisco Adaptive Security Appliance (ASA) firewall devices of several Cisco customers since at least December 2023, Cisco Talos researchers revealed in a blog post.

While the actor's initial access vector remains unknown, once it occurs, UAT4356 used a "sophisticated attack chain" involving exploit of the two vulnerabilities — a denial-of-service flaw tracked as CVE-2024-20353 and a persistent local execution flaw tracked as CVE-2024-20359 that have since been patched — to implant malware and execute commands across a small set of Cisco customers. Cisco Talos also flagged a third flaw in ASA, CVE-2024-20358, that was not used in the ArcaneDoor campaign.

The researchers also found evidence that the actor has interest in and potentially will attack devices from Microsoft and other vendors, making it crucial that organizations ensure that all perimeter devices "are properly patched, logging to a central, secure location, and configured to have strong multifactor authentication (MFA)," Cisco Talos wrote in the post.

**Custom Backdoor Malware for Global Governments**

The first sign of suspicious activity in the campaign came in early 2024 when a customer reached out to Cisco's Product Security Incident Response Team (PSIRT) and Cisco Talos about security concerns with its ASA firewall devices.

A subsequent several-months-long investigation conducted by Cisco and intelligence partners uncovered threat actor-controlled infrastructure dating back to early November 2023. Most of the attacks — all of which targeted government networks globally —occurred between December and early January. There is also evidence that the actor — which Microsoft also is now tracking as STORM-1849 — was testing and developing its capability as early as last July.

The primary payloads of the campaign are two custom backdoors— "Line Dancer" and "Line Runner" — which were used together by UAT4356 to conduct malicious activities on the network, such as configuration and modification; reconnaissance; network traffic capture/exfiltration; and potentially lateral movement.  

Line Dancer is a memory-resident shellcode interpreter that enables adversaries to upload and execute arbitrary shellcode payloads. In the campaign, Cisco Talos observed the malware being used to execute various commands on an ASA device, including: disabling the syslog; running and exfiltrating the command show configuration; creating and exfiltrating packet captures; and executing commands present in the shellcode, among other activities.

Line Runner meanwhile is a persistence mechanism deployed on the ASA device using functionality related to a legacy capability that allowed for the pre-loading of VPN clients and plugins on the device during booting that can be exploited as CVE-2024-20359, according to Cisco Talos. In at least one case, the threat actor also abused CVE-2024-20353 to facilitate this process.

"The attackers were able to leverage this vulnerability to cause the target ASA device to reboot, triggering the unzipping and installing" of Line Runner, according to the researchers.

**Protect the Perimeter From Cyberattackers**

Perimeter devices, which sit at the edge between an organization's internal network and the Internet, "are the perfect intrusion point for espionage-focused campaigns," providing threat actors a way to gain a foothold to "directly pivot into an organization, reroute or modify traffic, and monitor network communications into the secure network, according to Cisco Talos.

Zero-days on these devices are an especially attractive attack surface on these devices, notes Andrew Costis, chapter lead of the Adversary Research Team at MITRE ATT&CK testing firm AttackIQ.

"We've seen time and time again critical zero and n-day vulnerabilities being exploited with all of the mainstream security appliances and software," he says, noting previous attacks on bugs in devices from Ivanti, Palo Alto Networks, and others.

The threat to these devices highlights the need for organizations to "routinely and promptly" patch them using up-to-date hardware and software versions and configurations, as well as maintain close security monitoring of them, according to Cisco Talos.

Organizations also should focus on post-compromise TTPs of threat actors and test known adversary behaviors as part of "a layered approach" to defensive network operations, Costis says.

**Detecting ArcaneDoor Cyberattack Activity**

Indicators of compromise (IoCs) that customers can look for if they suspect they may have been targeted by ArcaneDoor include any flows to/from ASA devices to any of the IP addresses present in the IOC list included in the blog.

Organizations also can issue the command "show memory region | include lina" to identify another IOC. "If the output indicates more than one executable memory region … especially if one of these memory sections is exactly 0x1000 bytes, then this is a sign of potential tampering," Cisco Talos wrote.  

And, Cisco provided two sets of steps that network administrators can take to identify and remove the ArcaneDoor persistence backdoor Line Runner on an ASA device once the patch is applied. The first is to conduct a review of the contents of disk0; if a new file (e.g., "client\_bundle\_install.zip" or any other unusual .zip file) appears on the disk, it means that Line Runner had been present but is no longer active due to the update.

Administrators also can follow a series of commands provided that will create an innocuous file with a .zip extension that will be read by the ASA at reboot. If it appears on disk0, it means that Line Runner likely was present on the device in question. Administrators can then delete the "client\_bundle\_install.zip" file to remove the backdoor.

If administrators find a newly created .zip file on their ASA devices, they should copy that file off the device and email \[email protected\] using a reference to CVE-2024-20359 and including the outputs of the "dir disk0:" and "show version" commands from the device, as well as the .zip file that they extracted.

**About the Author(s)**

Elizabeth Montalbano is a freelance writer, journalist, and therapeutic writing mentor with more than 25 years of professional experience. Her areas of expertise include technology, business, and culture. Elizabeth previously lived and worked as a full-time journalist in Phoenix, San Francisco, and New York City; she currently resides in a village on the southwest coast of Portugal. In her free time, she enjoys surfing, hiking with her dogs, traveling, playing music, yoga, and cooking.

Cisco Zero-Days Anchor 'ArcaneDoor' Cyber-Espionage Campaign

How the CISO of Kenvue, a consumer healthcare company spun out from Johnson & Johnson, combined tools and new ideas to build out the security program.

Source: Timon Schneider via Alamy Stock Photo

As a longtime information security professional at Johnson & Johnson, Mike Wagner helped shape the Fortune 100 company's security approach and security stack. Wagner recently became the first CISO of Kenvue, J&J's year-old spin-off, which was previously J&J's consumer healthcare division. In his new role, Wagner aims to combine the best of J&J with an efficient and modern approach that fits the new standalone company.

"We wanted to create a streamlined and cost-effective architecture with maximum security," Wagner explains.

The first step was defining key roles required to build an effective security program. That included architects and engineers to implement tools, identity and access management (IAM) experts to enable secure authentication, risk management leaders to align security with business priorities, security operations staff for incident response, and dedicated staff for each cyber function.

To ensure maximum effectiveness and future scalability for the cyber architecture, the newly created cyber team knew it wanted to embed machine learning and artificial intelligence (AI). That included automating IAM, streamlining supplier assessments through automated questionnaires, implementing AI for behavioral analysis, and using machine learning to improve threat detection.

**Deciding Which Cyber Tools to Keep or Replace**

With the basics ironed out, the next step was choosing which tools and processes should be retained from J&J and which should be replaced. While J&J's cybersecurity architecture was solid, it was a patchwork of systems created by decades of acquisitions.

To make their determinations, Wagner's team first inventoried J&J's tools, mapping them to Kenvue's operating model and choosing the ones with capabilities Kenvue would need. In many cases, the team found that J&J's security tools were more full-featured than the smaller spin-off needed. In other cases, J&J's technology was duplicative. In still others, existing J&J technology wasn't affordable or didn't provide the maximum security footprint for Kenvue's mission.

And, sometimes, it simply came down to how well-integrated J&J's security architecture was.

"Take something like endpoint detection and response," Wagner says. "Where J&J may have had two to three pieces of software on the endpoint to accomplish that mission due to different acquisitions over time, we consolidated it into one more modern solution."

The ultimate decision for each type of security function also depended on the number and types of dependencies. For example, applications tend to be dependent on IAM, which meant that for the time being, Kenvue is going to stick with J&J's IAM systems. Over time, though, Wagner plans to migrate to a more modern IAM system.

In the end, Kenvue chose to adopt about half of its tech stack from J&J.

Choosing what to retain and what to replace can be tricky, notes Scott Crawford, research director for the 451 Research Information Security channel with S&P Global Market Intelligence. Typically, though, it comes down to weighing the tool's functionality and how well it will fit into the new company's architecture against other options that might be a better fit. In some cases, new investments may be required, while in others, subscription or licensing terms will have to be determined as part of spin-off costs, he says.

**The Right People, Working Together**

Another challenge Wagner faced was assembling the right combination of expertise for his cyber team. After evaluating the capabilities of existing J&J employees along with external candidates, he chose a combination of former J&J employees with deep business knowledge and new hires with modern technical and cyber skills. They included architects and engineers to implement defense controls, IAM experts, risk management leaders, and SecOps staff.

Wagner also chose to add one other type of personnel to his team: business information security officers (BISO), who act as intermediaries between the cyber organization and different business units. Wagner says that the BISO role is critical to his team's success.

"They focus on scouting what's new, the direction it's going, and how we can make sure the business is going about it securely," he explains.

With the tools and team in place, the final challenge was maintaining security for both J&J and Kenvue during the transition. It required constant communication among different functions, with daily meetings that included J&J leaders, Kenvue leaders, and suppliers to ensure that everything went smoothly.

With the foundation in place, Kenvue's security team is operating steadily, but Wagner says there is more to do. Next, he plans to lean into modern security strategies, including adoption of zero trust and enhancement of technical controls.

Continuing to improve cybersecurity programs is critical to helping ensure scalability and adaptability over the long term, Crawford says. That means making greater use of automation to handle overwhelming volumes of data at speed and scale.

"Automation will have to become even more trusted to handle problems at the scale and level of detail," he said. "Forward-thinking CISOs are, without doubt, looking at these opportunities seriously."

**About the Author(s)**

Contributing Writer, Dark Reading

Karen D. Schwartz is a technology and business writer with more than 20 years of experience. She has written on a broad range of technology topics for publications including ITProToday, CIO, InformationWeek, GCN, FCW, FedTech, BizTech, eWeek, and Government Executive.

J&amp;J Spin-Off CISO on Maximizing Cybersecurity

Ubuntu Security Notice 6750-1 - Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, bypass security restrictions, cross-site tracing, or execute arbitrary code. Bartek Nowotarski discovered that Thunderbird did not properly limit HTTP/2 CONTINUATION frames. An attacker could potentially exploit this issue to cause a denial of service.

    ==========================================================================Ubuntu Security Notice USN-6750-1April 25, 2024thunderbird vulnerabilities==========================================================================A security issue affects these releases of Ubuntu and its derivatives:- Ubuntu 23.10- Ubuntu 22.04 LTS- Ubuntu 20.04 LTSSummary:Several security issues were fixed in Thunderbird.Software Description:- thunderbird: Mozilla Open Source mail and newsgroup clientDetails:Multiple security issues were discovered in Thunderbird. If a user weretricked into opening a specially crafted website in a browsing context, anattacker could potentially exploit these to cause a denial of service,obtain sensitive information, bypass security restrictions, cross-sitetracing, or execute arbitrary code. (CVE-2024-2609, CVE-2024-3852,CVE-2024-3864)Bartek Nowotarski discovered that Thunderbird did not properly limit HTTP/2CONTINUATION frames. An attacker could potentially exploit this issue tocause a denial of service. (CVE-2024-3302)Lukas Bernhard discovered that Thunderbird did not properly manage memoryduring JIT optimisations, leading to an out-of-bounds read vulnerability.An attacker could possibly use this issue to cause a denial of service orexpose sensitive information. (CVE-2024-3854)Lukas Bernhard discovered that Thunderbird did not properly manage memorywhen handling JIT created code during garbage collection. An attackercould potentially exploit this issue to cause a denial of service, orexecute arbitrary code. (CVE-2024-3857)Ronald Crane discovered that Thunderbird did not properly manage memory inthe OpenType sanitizer on 32-bit devices, leading to an out-of-bounds readvulnerability. An attacker could possibly use this issue to cause a denialof service or expose sensitive information. (CVE-2024-3859)Ronald Crane discovered that Thunderbird did not properly manage memorywhen handling an AlignedBuffer. An attacker could potentially exploit thisissue to cause denial of service, or execute arbitrary code. (CVE-2024-3861)Update instructions:The problem can be corrected by updating your system to the followingpackage versions:Ubuntu 23.10:  thunderbird                     1:115.10.1+build1-0ubuntu0.23.10.1Ubuntu 22.04 LTS:  thunderbird                     1:115.10.1+build1-0ubuntu0.22.04.1Ubuntu 20.04 LTS:  thunderbird                     1:115.10.1+build1-0ubuntu0.20.04.1In general, a standard system update will make all the necessary changes.References:  https://ubuntu.com/security/notices/USN-6750-1  CVE-2024-2609, CVE-2024-3302, CVE-2024-3852, CVE-2024-3854,  CVE-2024-3857, CVE-2024-3859, CVE-2024-3861, CVE-2024-3864Package Information:  https://launchpad.net/ubuntu/+source/thunderbird/1:115.10.1+build1-0ubuntu0.23.10.1  https://launchpad.net/ubuntu/+source/thunderbird/1:115.10.1+build1-0ubuntu0.22.04.1  https://launchpad.net/ubuntu/+source/thunderbird/1:115.10.1+build1-0ubuntu0.20.04.1

Ubuntu Security Notice USN-6750-1

Ubuntu Security Notice 6743-3 - Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.

    ==========================================================================Ubuntu Security Notice USN-6743-3April 24, 2024linux-azure-6.5 vulnerabilities==========================================================================A security issue affects these releases of Ubuntu and its derivatives:- Ubuntu 22.04 LTSSummary:Several security issues were fixed in the Linux kernel.Software Description:- linux-azure-6.5: Linux kernel for Microsoft Azure cloud systemsDetails:Several security issues were discovered in the Linux kernel.An attacker could possibly use these to compromise the system.This update corrects flaws in the following subsystems:   - JFS file system;   - BPF subsystem;   - Netfilter;(CVE-2023-52600, CVE-2024-26589, CVE-2024-26591, CVE-2024-26581,CVE-2023-52603)Update instructions:The problem can be corrected by updating your system to the followingpackage versions:Ubuntu 22.04 LTS:   linux-image-6.5.0-1019-azure    6.5.0-1019.20~22.04.1   linux-image-6.5.0-1019-azure-fde  6.5.0-1019.20~22.04.1   linux-image-azure               6.5.0.1019.20~22.04.1   linux-image-azure-fde           6.5.0.1019.20~22.04.1After a standard system update you need to reboot your computer to makeall the necessary changes.ATTENTION: Due to an unavoidable ABI change the kernel updates havebeen given a new version number, which requires you to recompile andreinstall all third party kernel modules you might have installed.Unless you manually uninstalled the standard kernel metapackages(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,linux-powerpc), a standard system upgrade will automatically performthis as well.References:   https://ubuntu.com/security/notices/USN-6743-3   https://ubuntu.com/security/notices/USN-6743-1   CVE-2023-52600, CVE-2023-52603, CVE-2024-26581, CVE-2024-26589,   CVE-2024-26591Package Information:   https://launchpad.net/ubuntu/+source/linux-azure-6.5/6.5.0-1019.20~22.04.1

Ubuntu Security Notice USN-6743-3

Ubuntu Security Notice 6657-2 - USN-6657-1 fixed several vulnerabilities in Dnsmasq. This update provides the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered that Dnsmasq incorrectly handled validating DNSSEC messages. A remote attacker could possibly use this issue to cause Dnsmasq to consume resources, leading to a denial of service. It was discovered that Dnsmasq incorrectly handled preparing an NSEC3 closest encloser proof. A remote attacker could possibly use this issue to cause Dnsmasq to consume resources, leading to a denial of service. It was discovered that Dnsmasq incorrectly set the maximum EDNS.0 UDP packet size as required by DNS Flag Day 2020. This issue only affected Ubuntu 23.10.

    ==========================================================================Ubuntu Security Notice USN-6657-2April 24, 2024dnsmasq vulnerabilities==========================================================================A security issue affects these releases of Ubuntu and its derivatives:- Ubuntu 18.04 LTS (Available with Ubuntu Pro)- Ubuntu 16.04 LTS (Available with Ubuntu Pro)Summary:Several security issues were fixed in Dnsmasq.Software Description:- dnsmasq: Small caching DNS proxy and DHCP/TFTP serverDetails:USN-6657-1 fixed several vulnerabilities in Dnsmasq. This update providesthe corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.Original advisory details: Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered that Dnsmasq icorrectly handled validating DNSSEC messages. A remote attacker could possibly use this issue to cause Dnsmasq to consume resources, leading to a denial of service. (CVE-2023-50387)  It was discovered that Dnsmasq incorrectly handled preparing an NSEC3 closest encloser proof. A remote attacker could possibly use this issue to cause Dnsmasq to consume resources, leading to a denial of service. (CVE-2023-50868)  It was discovered that Dnsmasq incorrectly set the maximum EDNS.0 UDP packet size as required by DNS Flag Day 2020. This issue only affected Ubuntu 23.10. (CVE-2023-28450)Update instructions:The problem can be corrected by updating your system to the followingpackage versions:Ubuntu 18.04 LTS (Available with Ubuntu Pro):  dnsmasq-base                    2.90-0ubuntu0.18.04.1+esm1Ubuntu 16.04 LTS (Available with Ubuntu Pro):  dnsmasq-base                    2.90-0ubuntu0.16.04.1+esm1This update uses a new upstream release, which includes additional bugfixes. After a standard system update you need to reboot your computer tomake all the necessary changes.References:  https://ubuntu.com/security/notices/USN-6657-2  https://ubuntu.com/security/notices/USN-6657-1  CVE-2023-28450, CVE-2023-50387, CVE-2023-50868

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