General

  • Target

    Bootstrapper (1).exe

  • Size

    4.5MB

  • Sample

    241111-plyjksyhkn

  • MD5

    7c4f42168b6b77b79cec709462d83822

  • SHA1

    fe554500b94cb7e3b3ecb373fbbfec6bdf9228df

  • SHA256

    22de9a0aef3424a7ad95dfab9b8cfa8275e02083db45647aa8a953a2a6393007

  • SHA512

    2b8103bdc5ef177527c5b9889517c004f3d50fd534cd7cd180556ae348bebf16e471459205800932aa3230987d82060e79b9be78aa9a5bbb50d93b6ac5e58a4b

  • SSDEEP

    98304:VxkPiumssqzvNazqd81WLyWesy7flqtWRa:kKnsL7Ld1LTehbnR

Malware Config

Targets

    • Target

      Bootstrapper (1).exe

    • Size

      4.5MB

    • MD5

      7c4f42168b6b77b79cec709462d83822

    • SHA1

      fe554500b94cb7e3b3ecb373fbbfec6bdf9228df

    • SHA256

      22de9a0aef3424a7ad95dfab9b8cfa8275e02083db45647aa8a953a2a6393007

    • SHA512

      2b8103bdc5ef177527c5b9889517c004f3d50fd534cd7cd180556ae348bebf16e471459205800932aa3230987d82060e79b9be78aa9a5bbb50d93b6ac5e58a4b

    • SSDEEP

      98304:VxkPiumssqzvNazqd81WLyWesy7flqtWRa:kKnsL7Ld1LTehbnR

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Dcrat family

    • 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.

    • Disables Task Manager via registry modification

    • Checks computer location settings

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

    • Executes dropped EXE

    • Checks whether UAC is enabled

MITRE ATT&CK Enterprise v15

Tasks