Chimaera Toolkit Found on Thousands of Windows and Linux Systems Worldwide

 

AT&T's Alien Labs security branch has raised the alarm about a TeamTNT malware campaign that has gone almost totally undiscovered by anti-virus systems and is converting target machines into bitcoin miners, according to the company. TeamTNT, dubbed "one of the most active threat organizations since 2020" by Alien Labs researcher Ofer Caspi, is notorious for its exploitation - and misuse - of open-source security tools for anything from identifying susceptible targets to dumping remote-control shells. Last year, TeamTNT was discovered and linked to bitcoin mining malware being installed on susceptible Docker containers. Trend Micro discovered that the organization tries to steal AWS credentials in order to spread to other servers, while Cado Security discovered TeamTNT targeting Kubernetes installations more recently. The port scanner Masscan, libprocesshider software for running the TeamTNT bot from memory, 7z for file decompression, the b374k shell php panel for system control, and Lazagne are among TeamTNT's open-source tools. Palo Alto Networks' Unit 42 found Chimaera, a software repository that "highlights the expanding scope of TeamTNT operations within cloud environments as well as a target set for current and future operations," according to the company.Now, AT&T's Alien Labs has shed additional light on Chimaera, claiming that it has been in use since July and is "responsible for thousands of infections globally" across Windows, Linux, AWS, Docker, and Kubernetes targets, all while eluding detection by anti-virus and anti-malware programmes. The usage of Lazagne, an open-source application developed with one goal in mind: collecting credentials from major browsers, is a significant element of the Chimaera toolkit. Another programme tries to find and exfiltrate Amazon Web Services (AWS) credentials, while an IRC bot serves as a ..

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