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General

  • Target

    Bootstrapper_v2.3.exe

  • Size

    3.0MB

  • Sample

    250301-s93d8avvbt

  • MD5

    7744ab1b77f1c5204aacbcc67f80f5bc

  • SHA1

    a1af80b9ca1310167c4f8e772c3959fdf4167f32

  • SHA256

    3d418b43b753aa207aa32e87d3aac20cb5cb1498852a3d2c310196c7d668fb80

  • SHA512

    6760ad3682c7a5eae25c7ec934a0131b13e02f621d4ed4580300aab4659a4601afbcdfe1ada11155a8085be6b0759c38aa810587559a074d4d61ec281566771c

  • SSDEEP

    49152:VmjfxLrv43xqsknxiEgcbMSYKlUgmFLH7G7g569awPsD9sOBfXVfRQ8kQ79u:Vedrg3xTkx3rUNG7a69vPsS6/VfRbksU

Malware Config

Extracted

Family

xworm

C2

75.80.209.66:8080

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    RealtekAudioDG.exe

Targets

    • Target

      Bootstrapper_v2.3.exe

    • Size

      3.0MB

    • MD5

      7744ab1b77f1c5204aacbcc67f80f5bc

    • SHA1

      a1af80b9ca1310167c4f8e772c3959fdf4167f32

    • SHA256

      3d418b43b753aa207aa32e87d3aac20cb5cb1498852a3d2c310196c7d668fb80

    • SHA512

      6760ad3682c7a5eae25c7ec934a0131b13e02f621d4ed4580300aab4659a4601afbcdfe1ada11155a8085be6b0759c38aa810587559a074d4d61ec281566771c

    • SSDEEP

      49152:VmjfxLrv43xqsknxiEgcbMSYKlUgmFLH7G7g569awPsD9sOBfXVfRQ8kQ79u:Vedrg3xTkx3rUNG7a69vPsS6/VfRbksU

    • 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

    • Loads dropped DLL

    • Adds Run key to start application

MITRE ATT&CK Enterprise v15

Tasks