A hacking group exploited a SonicWall zero-day software flaw before a fix was available in order to deploy a previously unreported ransomware strain, FireEye researchers said Thursday. The disclosure of the ransomware comes one week after FireEye revealed three previously unknown vulnerabilities in SonicWall’s email security software. But the latest hacking tool emerges from an earlier zero-day found in SonicWall’s mobile networking gear. Mandiant, FireEye’s incident response unit, dubbed the malware FiveHands, which bears similarities to another hacking tool, dubbed HelloKitty, that attackers deployed against a video game company. The security firm linked it to a group they call UNC2447. “UNC2447 monetizes intrusions by extorting their victims first with FIVEHANDS ransomware followed by aggressively applying pressure through threats of media attention and offering victim data for sale on hacker forums,” reads a blog post from the company. “UNC2447 has been observed targeting organizations in Europe and North America and has […]
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