General

  • Target
    85120501827837c17abf2c3e1e256fcc0fcb01b0f1a8db9d7218ca7b418a4ac1
  • Size 1.1MB
  • Sample260917-2hj81ade59
  • SHA256 85120501827837c17abf2c3e1e256fcc0fcb01b0f1a8db9d7218ca7b418a4ac1
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      85120501827837c17abf2c3e1e256fcc0fcb01b0f1a8db9d7218ca7b418a4ac1
    • Size 1.1MB
    • SHA256 85120501827837c17abf2c3e1e256fcc0fcb01b0f1a8db9d7218ca7b418a4ac1
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • DCRat payload

    • 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.

    • Drops file in Drivers directory

    • 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

    • Drops file in System32 directory

    • SmartAssembly .NET packer

      Detects SmartAssembly .NET packer.

MITRE ATT&CK Enterprise v16

Tasks