Chaos Malware Resurfaces With All-New DDoS & Cryptomining Modules

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Jul 27, 2015
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The powerful Chaos malware has evolved yet again, morphing into a new Go-based, multiplatform threat that bears no resemblance to its previous ransomware iteration. It's now targeting known security vulnerabilities to launch distributed denial-of-service (DDoS) attacks and perform cryptomining.

Researchers from Black Lotus Labs, the threat intelligence arm of Lumen Technologies, recently observed a version of Chaos written in Chinese, leveraging China-based infrastructure, and exhibiting behavior far different than the last activity seen by the ransomware-builder of the same name, they said in a blog post published Sept. 28. Indeed, the distinctions between earlier variants of Chaos and the 100 distinct and recent Chaos clusters that researchers observed are so different that they say it poses a brand-new threat. In fact, researchers believe the latest variant is actually the evolution of the DDoS botnet Kaiji and perhaps "distinct from the Chaos ransomware builder" previously seen in the wild, they said.
In recent activity, Chaos successfully compromised a GitLab server and unfurled a flurry of DDoS attacks targeting the gaming, financial services and technology, and media and entertainment industries, along with DDoS-as-a-service providers and a cryptocurrency exchange. Chaos is now targeting not only enterprise and large organizations but also "devices and systems that aren't routinely monitored as part of an enterprise security model, such as SOHO routers and FreeBSD OS," the researchers said.

And while the last time Chaos was spotted in the wild it was acting more as typical ransomware that entered networks with the purpose of encrypting files, the actors behind the latest variant have very different motives in mind, the researchers said.
 

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