General

  • Target

    fdf58fac5f5d5c152dee83f08c0799b510b1ce936518248db6078c6c081f20b8

  • Size

    2.7MB

  • Sample

    240516-gfpqgsed5v

  • MD5

    a78d0c51cca6fcf4a6ef0c33e5fd0bd4

  • SHA1

    5768a7cf4aeed1327d64087f55fc6fba34f817fd

  • SHA256

    fdf58fac5f5d5c152dee83f08c0799b510b1ce936518248db6078c6c081f20b8

  • SHA512

    a3d3c48766afe5890562f0e86f5c44bf62beefebcf8f87dfc5065ba53ecae6cb8f9e4f441ac87ec5359170c08792fc784e9187366cb7c9a64fc6eb4c90e250c5

  • SSDEEP

    49152:iH64y2XDuLlIY14o9/yDzr1xJ8XbRrC9mWvR08Yv7yP3GcY:iHfE5Ad8Xd295UmGc

Malware Config

Targets

    • Target

      fdf58fac5f5d5c152dee83f08c0799b510b1ce936518248db6078c6c081f20b8

    • Size

      2.7MB

    • MD5

      a78d0c51cca6fcf4a6ef0c33e5fd0bd4

    • SHA1

      5768a7cf4aeed1327d64087f55fc6fba34f817fd

    • SHA256

      fdf58fac5f5d5c152dee83f08c0799b510b1ce936518248db6078c6c081f20b8

    • SHA512

      a3d3c48766afe5890562f0e86f5c44bf62beefebcf8f87dfc5065ba53ecae6cb8f9e4f441ac87ec5359170c08792fc784e9187366cb7c9a64fc6eb4c90e250c5

    • 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

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks