General

  • Target

    Bootstrapper.exe

  • Size

    883KB

  • Sample

    240901-qkwh9s1gqp

  • MD5

    77e867a3f236eb41a2a20e21c38aa579

  • SHA1

    1ef96b0d018842df9f11b4395b30d5c04f3da0b4

  • SHA256

    8feede6d1d97285dfa2c2ec23184ebcd801e72d547dc9844f5f12903d85e1e98

  • SHA512

    b866bcf34f44dbddc92c082179b42523ca0d05e89afa1501447ebf3e7cb9981f1f4c8655c7be8e919d71940f23c598fea6affae636b9aa1685243f9e31a2d5e2

  • SSDEEP

    24576:1bXDm30y7do7o4W9JHe9k3fQ0MSOLZasH96z27:dXerDe9k3fOSOLZatz

Malware Config

Extracted

Family

xworm

C2

leading-sexuality.gl.at.ply.gg:61430

locations-ff.gl.at.ply.gg:30820

Attributes
  • Install_directory

    %LocalAppData%

  • install_file

    RobloxClient.exe

Targets

    • Target

      Bootstrapper.exe

    • Size

      883KB

    • MD5

      77e867a3f236eb41a2a20e21c38aa579

    • SHA1

      1ef96b0d018842df9f11b4395b30d5c04f3da0b4

    • SHA256

      8feede6d1d97285dfa2c2ec23184ebcd801e72d547dc9844f5f12903d85e1e98

    • SHA512

      b866bcf34f44dbddc92c082179b42523ca0d05e89afa1501447ebf3e7cb9981f1f4c8655c7be8e919d71940f23c598fea6affae636b9aa1685243f9e31a2d5e2

    • SSDEEP

      24576:1bXDm30y7do7o4W9JHe9k3fQ0MSOLZasH96z27:dXerDe9k3fOSOLZatz

    • Contains code to disable Windows Defender

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

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • 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

    • Blocklisted process makes network request

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • 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