General

  • Target

    uuhuhjuhuh.exe

  • Size

    82KB

  • Sample

    241117-yc4hxaxbmf

  • MD5

    c72cc3fa1041ce6eb147096659e6294f

  • SHA1

    136a6e2d203248c130b80ccd834da3522f958289

  • SHA256

    0dd766f9c7fdb2b545a3071791a94dbfca4d321b9b83e7f7a16a9de77578a430

  • SHA512

    bbe79dab5cb6a60595b1341afd019f5b713bd57f0b78341129d0104326d4cc1fe69321c0ab5fd2977f7052b00dcc5b0740115402354b7cd3ad077de19dc9b39b

  • SSDEEP

    1536:Yea73bjqJ7T1KrtHm5GBablG23qOIzHF4gij6VOyEBloSrOQpWkW:Yea7raTcrtGEBablG23qOeGTisrOQpZW

Malware Config

Extracted

Family

xworm

C2

147.185.221.23:38042

Attributes
  • Install_directory

    %AppData%

  • install_file

    SystemUser32.exe

Targets

    • Target

      uuhuhjuhuh.exe

    • Size

      82KB

    • MD5

      c72cc3fa1041ce6eb147096659e6294f

    • SHA1

      136a6e2d203248c130b80ccd834da3522f958289

    • SHA256

      0dd766f9c7fdb2b545a3071791a94dbfca4d321b9b83e7f7a16a9de77578a430

    • SHA512

      bbe79dab5cb6a60595b1341afd019f5b713bd57f0b78341129d0104326d4cc1fe69321c0ab5fd2977f7052b00dcc5b0740115402354b7cd3ad077de19dc9b39b

    • SSDEEP

      1536:Yea73bjqJ7T1KrtHm5GBablG23qOIzHF4gij6VOyEBloSrOQpWkW:Yea7raTcrtGEBablG23qOeGTisrOQpZW

    • 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.

MITRE ATT&CK Enterprise v15

Tasks