General

  • Target
    xb1bbc12c4d70e13516f5a0537dc42b79f4960ae73bda6609c0024c51a31ce07f.exe
  • Size 1.7MB
  • Sample260528-3fefeaes5z
  • SHA256 b1bbc12c4d70e13516f5a0537dc42b79f4960ae73bda6609c0024c51a31ce07f
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      xb1bbc12c4d70e13516f5a0537dc42b79f4960ae73bda6609c0024c51a31ce07f.exe
    • Size 1.7MB
    • SHA256 b1bbc12c4d70e13516f5a0537dc42b79f4960ae73bda6609c0024c51a31ce07f
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: DcRat

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

    • Modifies WinLogon for persistence

    • Process spawned unexpected child process

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

    • 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.

    • 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