General

  • Target

    XClient.exe

  • Size

    59KB

  • Sample

    250120-ar1tkatjam

  • MD5

    959192f310b70b735c760587e82cb8ab

  • SHA1

    7841a747d5797ed18bd6c3157e899ba22a374101

  • SHA256

    56fdcda181b91eff9f4d42e07decd69028890447301dd07e871e1bf320b24c31

  • SHA512

    1e20e872a1c9beaaf242c4525623388e4c0ed8961ae806044be33e74278d448ab8a95acd9da68592e079a71e07db7183cf0327fa20618694c017e3100522253d

  • SSDEEP

    768:IyZLhJJzcdVrrnZTptA1STNvdBgWYd/bMOV/Qiaj3Y4wp6jYOFThfZ+S0:IyZLfZGrV4STT7sbpV/w3w60O1jP0

Malware Config

Extracted

Family

xworm

C2

board-tigers.gl.at.ply.gg:17833

Attributes
  • Install_directory

    %AppData%

  • install_file

    keyauth.exe

Targets

    • Target

      XClient.exe

    • Size

      59KB

    • MD5

      959192f310b70b735c760587e82cb8ab

    • SHA1

      7841a747d5797ed18bd6c3157e899ba22a374101

    • SHA256

      56fdcda181b91eff9f4d42e07decd69028890447301dd07e871e1bf320b24c31

    • SHA512

      1e20e872a1c9beaaf242c4525623388e4c0ed8961ae806044be33e74278d448ab8a95acd9da68592e079a71e07db7183cf0327fa20618694c017e3100522253d

    • SSDEEP

      768:IyZLhJJzcdVrrnZTptA1STNvdBgWYd/bMOV/Qiaj3Y4wp6jYOFThfZ+S0:IyZLfZGrV4STT7sbpV/w3w60O1jP0

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Command and Scripting Interpreter: PowerShell

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

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks