General

  • Target
    0e9dcb45a1c26603516172aa46552817.exe
  • Size 2.2MB
  • Sample250917-e7xjasfp2v
  • SHA256 f2420fdc9492498195a8a0bae43cfbf7c721b18c43b55ccfecf941f06164b154
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Targets

    • Target
      0e9dcb45a1c26603516172aa46552817.exe
    • Size 2.2MB
    • SHA256 f2420fdc9492498195a8a0bae43cfbf7c721b18c43b55ccfecf941f06164b154
    • MD5 SHA1 SHA512 SSDEEP
    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Dcrat family

    • Modifies WinLogon for persistence

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Disables Task Manager via registry modification

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • SmartAssembly .NET packer

      Detects SmartAssembly .NET packer.

MITRE ATT&CK Enterprise v16

Tasks