General

  • Target

    b7a7803345ff48799486bb3d6e45598c956d5217f6d5571ee684f5421198e0cf

  • Size

    2.7MB

  • Sample

    240516-c18xmsge8z

  • MD5

    9508912e063cac5e940efba1f85ce86f

  • SHA1

    e6d15f29a811c4470f4b7a245207e9f2d1051e62

  • SHA256

    b7a7803345ff48799486bb3d6e45598c956d5217f6d5571ee684f5421198e0cf

  • SHA512

    2581361c9c99904ff11beb75208e3689ef310cdb98fd8a0d71a3f0a3d5480f696fc14a5b8e42075d3df79b89bb2623114763ff75820fa454e053f5f72b875f27

  • SSDEEP

    49152:iH64y2XDuLlIY14o9/yDzr1xJ8XbRrC9mWvR08Yv7yP3GcY:iHfE5Ad8Xd295UmGc

Malware Config

Targets

    • Target

      b7a7803345ff48799486bb3d6e45598c956d5217f6d5571ee684f5421198e0cf

    • Size

      2.7MB

    • MD5

      9508912e063cac5e940efba1f85ce86f

    • SHA1

      e6d15f29a811c4470f4b7a245207e9f2d1051e62

    • SHA256

      b7a7803345ff48799486bb3d6e45598c956d5217f6d5571ee684f5421198e0cf

    • SHA512

      2581361c9c99904ff11beb75208e3689ef310cdb98fd8a0d71a3f0a3d5480f696fc14a5b8e42075d3df79b89bb2623114763ff75820fa454e053f5f72b875f27

    • SSDEEP

      49152:iH64y2XDuLlIY14o9/yDzr1xJ8XbRrC9mWvR08Yv7yP3GcY:iHfE5Ad8Xd295UmGc

    • 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