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VenusLocker Ransomware Gang Switches to Monero Mining

CyberWisdom Commentary:

A must read story from bleepingcomputer.com details that exposed hacker group, VenusLocker crew change their ransomware campaign with current Monero cryptocurrency mining, but, only targets South Korean users, for the time being, according to Joie Silva, security researcher at Fortinet’s FortiGuard Labs. The article reports that the spam emails contained a file attachment, an archive hiding a malicious EXE file.

Hiding EXE files in archive files is nothing new, but this particular campaign stood out because the archive format was EGG, a proprietary file format popular in South Korea only. Most antivirus engines on VirusTotal are not able to decompress the EGG archive and spot the malware within.

The EXE installed XMRig, a legitimate Monero mining application, but pre-configured to mine funds for the VenusLocker crew.

Under normal circumstances, it’s very hard for security firms to identify when cyber-criminal operations switch malware payloads. This time, Silva says they were able to tie the Monero miner to past VenusLocker ransomware installers because the miner EXE had almost identical metadata and the same target paths as previous VenusLocker binaries. Read below and linked article…

 

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thumbnail courtesy of bleepingcomputer.com

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