General

  • Target

    aa645d0afecfc51f0d86cac5fdcd8a5f6be3d1231532fd582ddecf7214ec3d2f

  • Size

    2.7MB

  • Sample

    240530-bvzlcahe7x

  • MD5

    00885de1e26bc400dcb780eeae9fac98

  • SHA1

    721c09a48674f7cfb8c02c95ff8e2365981c8174

  • SHA256

    aa645d0afecfc51f0d86cac5fdcd8a5f6be3d1231532fd582ddecf7214ec3d2f

  • SHA512

    7b182db613647af3e8888d822332e9b07bcda29e3d92d82bce102126ce8413e1488106040365b7cea422cc2fabf4d96a50c7ac4e1dfc88ff60f0239661b9d185

  • SSDEEP

    49152:qH64y2XDuLlIY14o9/yDzr1xJ8XbRrC9mWvR08Yv7yP3GcY:qHfE5Ad8Xd295UmGc

Malware Config

Targets

    • Target

      aa645d0afecfc51f0d86cac5fdcd8a5f6be3d1231532fd582ddecf7214ec3d2f

    • Size

      2.7MB

    • MD5

      00885de1e26bc400dcb780eeae9fac98

    • SHA1

      721c09a48674f7cfb8c02c95ff8e2365981c8174

    • SHA256

      aa645d0afecfc51f0d86cac5fdcd8a5f6be3d1231532fd582ddecf7214ec3d2f

    • SHA512

      7b182db613647af3e8888d822332e9b07bcda29e3d92d82bce102126ce8413e1488106040365b7cea422cc2fabf4d96a50c7ac4e1dfc88ff60f0239661b9d185

    • SSDEEP

      49152:qH64y2XDuLlIY14o9/yDzr1xJ8XbRrC9mWvR08Yv7yP3GcY:qHfE5Ad8Xd295UmGc

    • 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.

    • UAC bypass

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

    • Detects executables packed with SmartAssembly

    • 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