General

  • Target

    downloader.exe

  • Size

    31.9MB

  • Sample

    250125-xy39laxjdt

  • MD5

    464e7b0867fbec43a23720c6a59bdcb0

  • SHA1

    0bb452c8cc6957ac20c9aebd84f3d2051ed793a6

  • SHA256

    743f0ee62fad69d3b50b237c6a1b5aea0a3f962bf8c0f586b43a9e5709e8752e

  • SHA512

    1963d3aa3fa3d35e8e07f15d4abcae36113f6e280be6bcfd1af4e1020434107ce9a4da77c668132f1064335290ae6876b0110013b22dd45bb0f44b28e8ff7e5a

  • SSDEEP

    393216:WF0TihrqK9QvSqbOsZXMXbQ4UflU8AR4h9iBTa9UIWWzTSDCcL2F5aAU:WqgODXm8EVQtWVDCcqbU

Malware Config

Extracted

Family

xworm

Version

3.1

C2

83.38.24.1:1603

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    USB.exe

Targets

    • Target

      downloader.exe

    • Size

      31.9MB

    • MD5

      464e7b0867fbec43a23720c6a59bdcb0

    • SHA1

      0bb452c8cc6957ac20c9aebd84f3d2051ed793a6

    • SHA256

      743f0ee62fad69d3b50b237c6a1b5aea0a3f962bf8c0f586b43a9e5709e8752e

    • SHA512

      1963d3aa3fa3d35e8e07f15d4abcae36113f6e280be6bcfd1af4e1020434107ce9a4da77c668132f1064335290ae6876b0110013b22dd45bb0f44b28e8ff7e5a

    • SSDEEP

      393216:WF0TihrqK9QvSqbOsZXMXbQ4UflU8AR4h9iBTa9UIWWzTSDCcL2F5aAU:WqgODXm8EVQtWVDCcqbU

    • 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

    • 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

MITRE ATT&CK Enterprise v15

Tasks