Monday 2 November
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Yoba malware hides a crypto miner behind fake ChatGPT and Claude desktop apps

Severity
High
Sources
1

tracks a campaign called Yoba that uses fake projects posing as and desktop apps, delivered via SEO poisoning. Each ZIP pairs a signed Setup.exe with a malicious winmm.dll for DLL sideloading, which installs a multi-stage loader that fetches payloads via Telegram, DNS-over-HTTPS and Catbox, and ends with an XMRig miner routed through Tor.

For IT people · Written by AI from 1 source · Wrong?

What to do

  1. Only download AI tools from official vendor sites rather than GitHub repositories or search-result links.
  2. Check endpoints for a WMProcess folder under ProgramData, a copy of WMPDMC.exe, or a wmpdui.dll file.
  3. Review scheduled tasks for entries authored as Microsoft Corporation that launch WMPDMC.exe three minutes after boot.
  4. Investigate any unexpected Tor activity or sustained high CPU usage that could indicate cryptocurrency mining.

Written by AI from the sources, checked against them

Full story timeline · 1 update

  1. Fri 30 OctoberYoba Malware Hides a Crypto Miner Behind Legitimate OpenAI and Anthropic BinariesSecurity Affairs

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