General

  • Target

    XClient.exe

  • Size

    162KB

  • Sample

    250304-2ch4rasr15

  • MD5

    91331ecd6344f80b02ccac9760a3fcbe

  • SHA1

    572029a44d99a64fbd8ca759ddd41a3391f3abb3

  • SHA256

    c5a25cc0d10e27fab14c3563e826bef321f31c5128026b30227cddef219d2b85

  • SHA512

    5a67bb04be2f462b34e6e17208d6d6ce045c0602b6b8c6fa03564c6577e1875f33abecdcb4cc6dc302b52c23de6ac0bb8832e0a2c17e738ded74357fb7f4ae35

  • SSDEEP

    3072:I20sqx/l+bwQ/7Wb1Olk3oM5yBz65/M6If+3Js+3JFkKeTno:bA/Mbn/77y5yxBt25

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %Temp%

  • install_file

    svchost.exe

  • pastebin_url

    https://pastebin.com/raw/kADeGNZE

Targets

    • Target

      XClient.exe

    • Size

      162KB

    • MD5

      91331ecd6344f80b02ccac9760a3fcbe

    • SHA1

      572029a44d99a64fbd8ca759ddd41a3391f3abb3

    • SHA256

      c5a25cc0d10e27fab14c3563e826bef321f31c5128026b30227cddef219d2b85

    • SHA512

      5a67bb04be2f462b34e6e17208d6d6ce045c0602b6b8c6fa03564c6577e1875f33abecdcb4cc6dc302b52c23de6ac0bb8832e0a2c17e738ded74357fb7f4ae35

    • SSDEEP

      3072:I20sqx/l+bwQ/7Wb1Olk3oM5yBz65/M6If+3Js+3JFkKeTno:bA/Mbn/77y5yxBt25

    • 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

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Enterprise v15

Tasks