Hot Take From Deepfakes to Malware: AI's Expanding Role in Cyber Attacks

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Apr 21, 2016
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Large language models (LLMs) powering artificial intelligence (AI) tools today could be exploited to develop self-augmenting malware capable of bypassing YARA rules.

"Generative AI can be used to evade string-based YARA rules by augmenting the source code of small malware variants, effectively lowering detection rates," Recorded Future said in a new report shared with The Hacker News.

The findings are part of a red teaming exercise designed to uncover malicious use cases for AI technologies, which are already being experimented with by threat actors to create malware code snippets, generate phishing emails, and conduct reconnaissance on potential targets.

The cybersecurity firm said it submitted to an LLM a known piece of malware called STEELHOOK that's associated with the APT28 hacking group, alongside its YARA rules, asking it to modify the source code to sidestep detection such the original functionality remained intact and the generated source code was syntactically free of errors.

Armed with this feedback mechanism, the altered malware generated by the LLM made it possible to avoid detections for simple string-based YARA rules.

There are limitations to this approach, the most prominent being the amount of text a model can process as input at one time, which makes it difficult to operate on larger code bases.

Besides modifying malware to fly under the radar, such AI tools could be used to create deepfakes impersonating senior executives and leaders and conduct influence operations that mimic legitimate websites at scale.

Source: From Deepfakes to Malware: AI's Expanding Role in Cyber Attacks
 

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