Security News > 2022 > May > Microsoft: Sysrv botnet targets Windows, Linux servers with new exploits

Microsoft says the Sysrv botnet is now exploiting vulnerabilities in the Spring Framework and WordPress to ensnare and deploy cryptomining malware on vulnerable Windows and Linux servers.

"The new variant, which we call Sysrv-K, sports additional exploits and can gain control of web servers" by exploiting various vulnerabilities, the Microsoft Security Intelligence team said in a Twitter thread. "These vulnerabilities, which have all been addressed by security updates, include old vulnerabilities in WordPress plugins, as well as newer vulnerabilities like CVE-2022-22947."

As they observed, Sysrv is scanning the Internet for vulnerable Windows and Linux enterprise servers and it infects them with Monero miners and self-spreader malware payloads.

To hack its way into these web servers, the botnet exploits flaws in web apps and databases, such as PHPUnit, Apache Solar, Confluence, Laravel, JBoss, Jira, Sonatype, Oracle WebLogic, and Apache Struts.

The botnet propagator component will aggressively scan the Internet for more vulnerable Windows and Linux systems to add to its army of Monero mining bots.

Sysrv fully compromises them using exploits targeting remote code injection or execution vulnerabilities that allow it to execute malicious code remotely.

News URL

https://www.bleepingcomputer.com/news/security/microsoft-sysrv-botnet-targets-windows-linux-servers-with-new-exploits/