General

  • Target

    Discord.exe

  • Size

    120KB

  • Sample

    240929-tjtj3atgpc

  • MD5

    3d44681da2cf07c57e8c77f709213273

  • SHA1

    b8268ab05b2a1cfb133ae8f99cced9de7598c079

  • SHA256

    8c7b1b3f54174db0ecf87a690cacae9c74d2d2304bf60b66e3143b1a92a523d1

  • SHA512

    87c6600bf71ce48d200c72c2da48856713994a378fdab52094887b2bd0118a611f1c12aebb1697ca685c01a5f36649386f4534d7d08fc070ac6edd4844679e01

  • SSDEEP

    3072:QV3J6kkt5h1X+HqTi0BW69hd1MMdxPe9N9uA0/+hL9TBfnPIJn:dt5hBPi0BW69hd1MMdxPe9N9uA069TB4

Malware Config

Extracted

Family

xworm

Version

5.0

C2

greater-thoughts.gl.at.ply.gg:45129

Mutex

5U8bjpfI4AXbP7eS

Attributes
  • Install_directory

    %AppData%

  • install_file

    svchost.exe

aes.plain

Targets

    • Target

      Discord.exe

    • Size

      120KB

    • MD5

      3d44681da2cf07c57e8c77f709213273

    • SHA1

      b8268ab05b2a1cfb133ae8f99cced9de7598c079

    • SHA256

      8c7b1b3f54174db0ecf87a690cacae9c74d2d2304bf60b66e3143b1a92a523d1

    • SHA512

      87c6600bf71ce48d200c72c2da48856713994a378fdab52094887b2bd0118a611f1c12aebb1697ca685c01a5f36649386f4534d7d08fc070ac6edd4844679e01

    • SSDEEP

      3072:QV3J6kkt5h1X+HqTi0BW69hd1MMdxPe9N9uA0/+hL9TBfnPIJn:dt5hBPi0BW69hd1MMdxPe9N9uA069TB4

    • Detect Xworm Payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • UAC bypass

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Blocklisted process makes network request

    • 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

    • Sets service image path in registry

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Indicator Removal: Clear Windows Event Logs

      Clear Windows Event Logs to hide the activity of an intrusion.

    • Enumerates connected drives

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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Writes to the Master Boot Record (MBR)

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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks