General

  • Target
    Cryptic Release V1.4.exe
  • Size 8.5MB
  • Sample240620-clv28sshqb
  • SHA256 f99d78317fe908e8f863563f5b8662c21185dd256120b534dd3a3a842557fc3c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • xworm

C2
  • 91.92.241.69:5555

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    Windows Runtime.exe

Targets

    • Target
      Cryptic Release V1.4.exe
    • Size 8.5MB
    • SHA256 f99d78317fe908e8f863563f5b8662c21185dd256120b534dd3a3a842557fc3c
    • MD5 SHA1 SHA512 SSDEEP
    • 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.

    • Downloads MZ/PE file

    • 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

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Looks up external IP address via web service

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

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks