General

  • Target

    loader.exe

  • Size

    64.4MB

  • Sample

    250305-nwyrnaxqt2

  • MD5

    8d2648418bae33657c018bba48986552

  • SHA1

    ba8b6fd3bd2ef772e5f3a0db7f40ce73a916fc3e

  • SHA256

    80d76f13907f3910ff9db3c107eff209aaf0a4d2e782e795e5a0e95ec7df09be

  • SHA512

    a27ae27487660d797c1e2d24632abeb3eedfff66ee260ba6bb3313e8f660b371838e56207268961cb34f725295b485507e35ab1331963add70be2c3b7c547e70

  • SSDEEP

    393216:RjaZgP8kqfoo53we9r9OJ/sbA9ZhGInxtnWxvdiQ2OUNpCEp7kN3VkQGQPNLFu48:pkghqfk49Otsbyx1DOUNoER7gq

Malware Config

Extracted

Family

xworm

Version

3.1

C2

83.38.24.1:1603

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    USB.exe

Targets

    • Target

      loader.exe

    • Size

      64.4MB

    • MD5

      8d2648418bae33657c018bba48986552

    • SHA1

      ba8b6fd3bd2ef772e5f3a0db7f40ce73a916fc3e

    • SHA256

      80d76f13907f3910ff9db3c107eff209aaf0a4d2e782e795e5a0e95ec7df09be

    • SHA512

      a27ae27487660d797c1e2d24632abeb3eedfff66ee260ba6bb3313e8f660b371838e56207268961cb34f725295b485507e35ab1331963add70be2c3b7c547e70

    • SSDEEP

      393216:RjaZgP8kqfoo53we9r9OJ/sbA9ZhGInxtnWxvdiQ2OUNpCEp7kN3VkQGQPNLFu48:pkghqfk49Otsbyx1DOUNoER7gq

    • 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.

    • Downloads MZ/PE file

    • 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