General

  • Target
    install.ps1
  • Size 820B
  • Sample260605-ajvbtaas6m
  • SHA256 f2ef12197eef1980d63c275b91f51717b9aea0808a79598a27b66cc2c43401ad
  • MD5 SHA1 SHA512 TLSH

Malware Config

Targets

    • Target
      install.ps1
    • Size 820B
    • SHA256 f2ef12197eef1980d63c275b91f51717b9aea0808a79598a27b66cc2c43401ad
    • MD5 SHA1 SHA512 TLSH
    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Modifies WinLogon for persistence

    • Modifies Windows Defender DisableAntiSpyware settings

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Deletes system backups

      Uses wbadmin.exe to inhibit system recovery.

    • Disables use of System Restore points

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Drops file in System32 directory

    • Enumerates processes with tasklist

MITRE ATT&CK Enterprise v16

Tasks