General

  • Target

    bfa95df9fad783a5dc6d38f7b7677cfc44f29c1ef28f08ea6fc20f2a962608dbN.exe

  • Size

    1.5MB

  • Sample

    241230-q3fwjayqcw

  • MD5

    80bc6473c8c8d62aa31b9848889efca0

  • SHA1

    0d92b41270fa56419c3cceda679de938a8ee4502

  • SHA256

    bfa95df9fad783a5dc6d38f7b7677cfc44f29c1ef28f08ea6fc20f2a962608db

  • SHA512

    d24044613e334dc2b8e98c3367927f6f17deab96bedba6199360848d4d6274f96b367afc2cc67194b2deeb2b58908d56c3e70e1954d3d983d480c74116d4b42a

  • SSDEEP

    24576:0NNUtQhWhtqDfDXQdy+N+gfQqRsgFlDRluQ70eJiVbWpR:EzhWhCXQFN+0IEuQgyiVK

Malware Config

Targets

    • Target

      bfa95df9fad783a5dc6d38f7b7677cfc44f29c1ef28f08ea6fc20f2a962608dbN.exe

    • Size

      1.5MB

    • MD5

      80bc6473c8c8d62aa31b9848889efca0

    • SHA1

      0d92b41270fa56419c3cceda679de938a8ee4502

    • SHA256

      bfa95df9fad783a5dc6d38f7b7677cfc44f29c1ef28f08ea6fc20f2a962608db

    • SHA512

      d24044613e334dc2b8e98c3367927f6f17deab96bedba6199360848d4d6274f96b367afc2cc67194b2deeb2b58908d56c3e70e1954d3d983d480c74116d4b42a

    • SSDEEP

      24576:0NNUtQhWhtqDfDXQdy+N+gfQqRsgFlDRluQ70eJiVbWpR:EzhWhCXQFN+0IEuQgyiVK

    • DcRat

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

    • Dcrat family

    • Modifies WinLogon for persistence

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • UAC bypass

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Drops file in Drivers directory

    • 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