General

  • Target

    BootstrapperNew.exe

  • Size

    2.5MB

  • Sample

    250302-w361ls1se1

  • MD5

    4d98901d7d0d7f62de6e076d955f1926

  • SHA1

    e5a6e473f8b089171b7e79049c6d0ca6c5fb0ba3

  • SHA256

    dc5f812fd7931f68b7c178ee741a9f39f53d7a50df2b7db3a04027079e2d3cb9

  • SHA512

    c6795843377fdd44a5cee28a918788f6e6bc67b195d3018ee95313bc82bf96a787e934e56923bba5d5a22d7b42691a48f1ee858817773db44d28e456977b15f4

  • SSDEEP

    49152:YZPjorfOAfRxx13BIq8IYpSqxN7XGQKoBaJ3RIrMQJZipKE1:YZkzD73i7pSqxNV5wQJwd1

Malware Config

Extracted

Family

xworm

C2

cause-indexes.gl.at.ply.gg:17210

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

Targets

    • Target

      BootstrapperNew.exe

    • Size

      2.5MB

    • MD5

      4d98901d7d0d7f62de6e076d955f1926

    • SHA1

      e5a6e473f8b089171b7e79049c6d0ca6c5fb0ba3

    • SHA256

      dc5f812fd7931f68b7c178ee741a9f39f53d7a50df2b7db3a04027079e2d3cb9

    • SHA512

      c6795843377fdd44a5cee28a918788f6e6bc67b195d3018ee95313bc82bf96a787e934e56923bba5d5a22d7b42691a48f1ee858817773db44d28e456977b15f4

    • SSDEEP

      49152:YZPjorfOAfRxx13BIq8IYpSqxN7XGQKoBaJ3RIrMQJZipKE1:YZkzD73i7pSqxNV5wQJwd1

    • 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.

    • Event Triggered Execution: Image File Execution Options Injection

    • 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

    • Checks whether UAC is enabled

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v15

Tasks