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Researchers this week unveiled a new strain of Linux malware that’s notable for its stealth and sophistication in infecting both traditional servers and smaller Internet-of-things devices.
Dubbed Shikitega by the AT&T Alien Labs researchers who discovered it, the malware is delivered through a multistage infection chain using polymorphic encoding. It also abuses legitimate cloud services to host command-and-control servers. These things make detection extremely difficult.
“Threat actors continue to search for ways to deliver malware in new ways to stay under the radar and avoid detection,” AT&T Alien Labs researcher Ofer Caspi wrote. “Shikitega malware is delivered in a sophisticated way, it uses a polymorphic encoder, and it gradually delivers its payload where each step reveals only part of the total payload. In addition, the malware abuses known hosting services to host its command and control servers.”
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Source: Ars Technica – New Linux malware combines unusual stealth with a full suite of capabilities