General

  • Target

    klmfdldml;mdfgg.exe

  • Size

    3.1MB

  • Sample

    240622-lmablawhqp

  • MD5

    eaa4675c30f2cf9e1ee943f6b90d7989

  • SHA1

    ac27f2da7f685afcfed8eb80ace7bc08b45d09d7

  • SHA256

    d5834a0f49fb85966bb6265d3eaf46aced50cc622b8af92bf40133f17543421c

  • SHA512

    07ceea22794b336a601d965aeff6564f901389202cf01d116e29a75905bd1baa8dabc8f3b7d433584cb7824e9e4c4a8feb2c8f4a95a320fad989cd64a3486429

  • SSDEEP

    49152:UbA30b6ZAYSbHNAYd5zIef0Dw1XMkMHGtiqWb/PK89ww+SOMR0s1vR:UbX62YmAYd5X8kX1MmtiqWbaYGs0s1J

Malware Config

Targets

    • Target

      klmfdldml;mdfgg.exe

    • Size

      3.1MB

    • MD5

      eaa4675c30f2cf9e1ee943f6b90d7989

    • SHA1

      ac27f2da7f685afcfed8eb80ace7bc08b45d09d7

    • SHA256

      d5834a0f49fb85966bb6265d3eaf46aced50cc622b8af92bf40133f17543421c

    • SHA512

      07ceea22794b336a601d965aeff6564f901389202cf01d116e29a75905bd1baa8dabc8f3b7d433584cb7824e9e4c4a8feb2c8f4a95a320fad989cd64a3486429

    • SSDEEP

      49152:UbA30b6ZAYSbHNAYd5zIef0Dw1XMkMHGtiqWb/PK89ww+SOMR0s1vR:UbX62YmAYd5X8kX1MmtiqWbaYGs0s1J

    • 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.

    • 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

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks whether UAC is enabled

MITRE ATT&CK Enterprise v15

Tasks