General

  • Target

    31970365cad3425aa523a7815d695f3c.exe

  • Size

    1.2MB

  • Sample

    241103-ns76xstalg

  • MD5

    31970365cad3425aa523a7815d695f3c

  • SHA1

    1c6196284ec2666000bda7c091cda224fad77473

  • SHA256

    0c0b4ee3d14fa4db0bc8268ed908480dd3b977fa3c98bcb930a52fc2839d35b4

  • SHA512

    7e95cf8c6ac59ab53c8cdaca6fab41ff7c968afa692f88b2bb90966db9eb1682ac969043d1fea6db876b7df3665dfc522b736257db798e574b2344626c0bde49

  • SSDEEP

    24576:LJlmUJyTmqFOGfeRIvZ6+adOSMZgrWoIaWrcX:evU+a/rSro

Malware Config

Targets

    • Target

      31970365cad3425aa523a7815d695f3c.exe

    • Size

      1.2MB

    • MD5

      31970365cad3425aa523a7815d695f3c

    • SHA1

      1c6196284ec2666000bda7c091cda224fad77473

    • SHA256

      0c0b4ee3d14fa4db0bc8268ed908480dd3b977fa3c98bcb930a52fc2839d35b4

    • SHA512

      7e95cf8c6ac59ab53c8cdaca6fab41ff7c968afa692f88b2bb90966db9eb1682ac969043d1fea6db876b7df3665dfc522b736257db798e574b2344626c0bde49

    • SSDEEP

      24576:LJlmUJyTmqFOGfeRIvZ6+adOSMZgrWoIaWrcX:evU+a/rSro

    • 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