General

  • Target

    97a026b442f5d5739ea3d8565f3a044d.exe

  • Size

    2.6MB

  • Sample

    250110-bthw7syrdm

  • MD5

    97a026b442f5d5739ea3d8565f3a044d

  • SHA1

    dd409fa09eede943173f5aed10542f378062dcb1

  • SHA256

    37afdc07792fe92b790bd6ba935889cef87b699d9f1a8f86336076f8cf6e4b72

  • SHA512

    007b12f6c721ad9681c2013ac0038a23b1dc4bc2fb87c779e85970e820d5f4735c962f05a378ece3a0f23e4288172ccc43b634dffdc12a636673852884dd297d

  • SSDEEP

    49152:cVtVRFA8evMabRZgEVjPW8bfBodneUXBXw7YKdy2043sjkH:cNR/eUab3W8todenPJcjk

Malware Config

Targets

    • Target

      97a026b442f5d5739ea3d8565f3a044d.exe

    • Size

      2.6MB

    • MD5

      97a026b442f5d5739ea3d8565f3a044d

    • SHA1

      dd409fa09eede943173f5aed10542f378062dcb1

    • SHA256

      37afdc07792fe92b790bd6ba935889cef87b699d9f1a8f86336076f8cf6e4b72

    • SHA512

      007b12f6c721ad9681c2013ac0038a23b1dc4bc2fb87c779e85970e820d5f4735c962f05a378ece3a0f23e4288172ccc43b634dffdc12a636673852884dd297d

    • SSDEEP

      49152:cVtVRFA8evMabRZgEVjPW8bfBodneUXBXw7YKdy2043sjkH:cNR/eUab3W8todenPJcjk

    • 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.

    • UAC bypass

    • 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.

    • 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

MITRE ATT&CK Enterprise v15

Tasks