General

  • Target

    ebd61f9af6a8dd21530241af42217fcdb20a33ce635529fbce43f342a2587ed8.exe

  • Size

    1.5MB

  • Sample

    241221-1pxbga1kfq

  • MD5

    8b94c19be340bab63211bf41f8cff84a

  • SHA1

    3b11722edb38d3303fd7f55007750c8567b2bf85

  • SHA256

    ebd61f9af6a8dd21530241af42217fcdb20a33ce635529fbce43f342a2587ed8

  • SHA512

    2df90061b7ccfc658736807ed7b89b568ad790ca83748fbe07e659d31916c480f8892fab3a72d42674877e1dec8de6583f3b9e5643785b582bceb2b348f82959

  • SSDEEP

    24576:0NNUtQhWhtqDfDXQdy+N+gfQqRsgFlDRluQ70eJiVbWpR6:EzhWhCXQFN+0IEuQgyiVKS

Malware Config

Targets

    • Target

      ebd61f9af6a8dd21530241af42217fcdb20a33ce635529fbce43f342a2587ed8.exe

    • Size

      1.5MB

    • MD5

      8b94c19be340bab63211bf41f8cff84a

    • SHA1

      3b11722edb38d3303fd7f55007750c8567b2bf85

    • SHA256

      ebd61f9af6a8dd21530241af42217fcdb20a33ce635529fbce43f342a2587ed8

    • SHA512

      2df90061b7ccfc658736807ed7b89b568ad790ca83748fbe07e659d31916c480f8892fab3a72d42674877e1dec8de6583f3b9e5643785b582bceb2b348f82959

    • SSDEEP

      24576:0NNUtQhWhtqDfDXQdy+N+gfQqRsgFlDRluQ70eJiVbWpR6:EzhWhCXQFN+0IEuQgyiVKS

    • 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

    • 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

MITRE ATT&CK Enterprise v15

Tasks