General

  • Target

    svhost.exe

  • Size

    3.1MB

  • Sample

    240723-rh3egaxblc

  • MD5

    0576f3975ecddbe6f36c7193c550220a

  • SHA1

    b4d5fc9c7909de32af181bd9cafb0820b076b790

  • SHA256

    780ca35ebb46afcdf59c486a37810a3642351bacbbea241d770330a6d3a92249

  • SHA512

    40b2fe904756c9bda180c9812caa4d8e1b7e980a865aac636af0cd923e5d9aacad82a7e033fef6893877abf80dcc5bed32bfd1a79913d26c7e8357dd70800836

  • SSDEEP

    49152:ubA3jHf0AsSwuoLyIPINgqdqZtUac//CxLasJ1ENYN7RG/2rP7Cr4AwurD:ubSsS5wQCvLURCVJ12M2YI4Dun

Malware Config

Targets

    • Target

      svhost.exe

    • Size

      3.1MB

    • MD5

      0576f3975ecddbe6f36c7193c550220a

    • SHA1

      b4d5fc9c7909de32af181bd9cafb0820b076b790

    • SHA256

      780ca35ebb46afcdf59c486a37810a3642351bacbbea241d770330a6d3a92249

    • SHA512

      40b2fe904756c9bda180c9812caa4d8e1b7e980a865aac636af0cd923e5d9aacad82a7e033fef6893877abf80dcc5bed32bfd1a79913d26c7e8357dd70800836

    • SSDEEP

      49152:ubA3jHf0AsSwuoLyIPINgqdqZtUac//CxLasJ1ENYN7RG/2rP7Cr4AwurD:ubSsS5wQCvLURCVJ12M2YI4Dun

    • 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.

    • Disables Task Manager via registry modification

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks whether UAC is enabled

MITRE ATT&CK Enterprise v15

Tasks