Summary

  • Remcos Remote Access Trojan (RAT) is a particularly stealthy piece of malware
  • It operates using phishing, and requires no download by the victim
  • After a malicious zip file link is clicked, the RAT executes HTML applications through PowerShell, and can take complete control of a system.
  • Protection can be achieved by following instructions to change settings within PowerShell and Windows 11/10
  • These include setting PowerShell to Constrained Language Mode, and enabling “ScriptBlockLogging” to prevent remote execution of shell code loaders in PowerShell
  • Within Windows 11 Pro, the mshta.

By Sayak Boral

Original Article