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RansomwareMay 11, 2026

Flash Alert: EtherRat and TukTuk C2 End in The Gentleman Ransomware In April, we observed an int...

EtherRat and TukTuk C2 malware used to deliver The Gentleman ransomware in April intrusion.

Summary

In April, a domain-wide ransomware attack began with a malicious MSI installer disguised as Sysinternals RAMMap. The intrusion leveraged EtherRat and TukTuk C2 infrastructure to establish persistence before deploying The Gentleman ransomware across the victim's network.

Indicators of Compromise

  • malware — EtherRat
  • malware — TukTuk C2
  • malware — The Gentleman

Entities

Sysinternals RAMMap (product)