Headline
New Sysrv Botnet Variant Hijacking Windows and Linux with Crypto Miners
Microsoft is warning of a new variant of the srv botnet that’s exploiting multiple security flaws in web applications and databases to install coin miners on both Windows and Linux systems. The tech giant, which has called the new version Sysrv-K, is said to weaponize an array of exploits to gain control of web servers. The cryptojacking botnet first emerged in December 2020. "Sysrv-K scans the
Microsoft is warning of a new variant of the srv botnet that’s exploiting multiple security flaws in web applications and databases to install coin miners on both Windows and Linux systems.
The tech giant, which has called the new version Sysrv-K, is said to weaponize an array of exploits to gain control of web servers. The cryptojacking botnet first emerged in December 2020.
“Sysrv-K scans the internet to find web servers with various vulnerabilities to install itself,” the company said in a series of tweets. “The vulnerabilities range from path traversal and remote file disclosure to arbitrary file download and remote code execution vulnerabilities.”
This also includes CVE-2022-22947 (CVSS score: 10.0), a code injection vulnerability in Spring Cloud Gateway that could be exploited to allow arbitrary remote execution on a remote host via a maliciously crafted request.
It’s worth noting that the abuse of CVE-2022-22947 has prompted the U.S. Cybersecurity and Infrastructure Security Agency to add the flaw to its Known Exploited Vulnerabilities Catalog.
A key differentiator is that Sysrv-K scans for WordPress configuration files and their backups to fetch database credentials, which are then used to hijack web servers. It’s also said to have upgraded its command-and-control communication functions to make use of a Telegram Bot.
Once infected, lateral movement is facilitated through SSH keys available on the victim machine to deploy copies of the malware to other systems and grow the botnet’s size, effectively putting the entire network at risk.
“The Sysrv malware takes advantage of known vulnerabilities to spread their Cryptojacking malware,” Lacework Labs researchers noted last year. “Ensuring public facing applications are kept up to date with the latest security patches is critical to avoid opportunistic adversaries from compromising systems.”
Besides securing internet-exposed servers, Microsoft is additionally advising organizations to apply security updates in a timely fashion and build credential hygiene to reduce risk.
Found this article interesting? Follow THN on Facebook, Twitter and LinkedIn to read more exclusive content we post.
Related news
This Metasploit module exploits an unauthenticated remote code execution vulnerability in Spring Cloud Gateway versions 3.0.0 through 3.0.6 and 3.1.0. The vulnerability can be exploited when the Gateway Actuator endpoint is enabled, exposed and unsecured. An unauthenticated attacker can use SpEL expressions to execute code and take control of the victim machine.
Spring4Shell and Veeam RCE exploit topped the list in Q1 2022
Vulnerability in the Oracle Banking Trade Finance product of Oracle Financial Services Applications (component: Infrastructure). The supported version that is affected is 14.5. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Banking Trade Finance. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Banking Trade Finance accessible data as well as unauthorized access to critical data or complete access to all Oracle Banking Trade Finance accessible data. CVSS 3.1 Base Score 6.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N).
EnemyBot DDoS botnet is rapidly weaponizing security bugs disclosed in CMS systems like WordPress plug-ins, Android devices, commercial Web servers, and other enterprise applications.
Malware borrows generously from code used by other botnets such as Mirai, Qbot and Zbot.
A nascent Linux-based botnet named Enemybot has expanded its capabilities to include recently disclosed security vulnerabilities in its arsenal to target web servers, Android devices, and content management systems (CMS). "The malware is rapidly adopting one-day vulnerabilities as part of its exploitation capabilities," AT&T Alien Labs said in a technical write-up published last week. "Services
The Sysrv botnet has been developing over the last years, and has become a multi-platform botnet that specializes in Monero cryptomining. The post Sysrv botnet is out to mine Monero on your Windows and Linux servers appeared first on Malwarebytes Labs.
By Deeba Ahmed Microsoft has discovered a new Sysrv botnet variant deploying cryptocurrency miners on Windows and Linux systems. The Microsoft… This is a post from HackRead.com Read the original post: New Sysrv-k Botnet Infecting Windows and Linux Systems with Cryptominer
Microsoft researchers say they are tracking a botnet that is leveraging bugs in the Spring Framework and WordPress plugins.
Image source: z3r00t The U.S. Cybersecurity and Infrastructure Security Agency on Monday added two security flaws, including the recently disclosed remote code execution bug affecting Zyxel firewalls, to its Known Exploited Vulnerabilities Catalog, citing evidence of active exploitation. Tracked as CVE-2022-30525, the vulnerability is rated 9.8 for severity and relates to a command injection flaw
Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JNDI). Supported versions that are affected are Oracle Java SE: 7u331, 8u321, 11.0.14, 17.0.2, 18; Oracle GraalVM Enterprise Edition: 20.3.5, 21.3.1 and 22.0.0.2. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability can also be exploited by using APIs in the specified Component, e.g., through a web service ...
In spring cloud gateway versions prior to 3.1.1+ and 3.0.7+ , applications are vulnerable to a code injection attack when the Gateway Actuator endpoint is enabled, exposed and unsecured. A remote attacker could make a maliciously crafted request that could allow arbitrary remote execution on the remote host.