Cyber Risks · Unit 42 Palo Alto Networks

Tracking Mini Dionis: Cozy Car’s New Ride Is Related to Seaduke

Summary: Unit 42 reported a CozyDuke (CozyCar) campaign beginning July 7, 2015, targeting government organizations and think-tanks in democratic countries through spear phishing that used compromised legitimate websites for payload delivery and command and control. The malware, called "miniDionis" in pdb strings left in the binary, drops a decoy .wav file of a female voice posing as a reporter while a secondary dropper fetches a .swf file over SSL and decodes embedded binary data into an executable disguised under names such as TimbuktuDaemon and SearchIndexer.

Key Takeaway: The executable was not seen on VirusTotal until July 9 and carried a 3/54 detection rate, so signature-based defenses had little to work with while the group ran a full command handler against its targets.

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Topics
Phishing & Social Engineering
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