Overview

overview

10

Static

static

10

HEUR-Backd...b6.exe

windows7-x64

10

HEUR-Backd...b6.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    HEUR-Backdoor.MSIL.LightStone.gen-6974f159cb6.exe
  • Size 1.3MB
  • Sample231105-qphg7sfc3w
  • SHA256 6974f159cb6e056fd9675ec4ecb6d271a7d6bb69711a295be593091d3bcb9e45
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
dcratinfostealerpersistencerat

Malware Config

Targets

    • Target
      HEUR-Backdoor.MSIL.LightStone.gen-6974f159cb6.exe
    • Size 1.3MB
    • SHA256 6974f159cb6e056fd9675ec4ecb6d271a7d6bb69711a295be593091d3bcb9e45
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    dcratinfostealerpersistencerat

    • DcRat

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

      ratinfostealerdcrat

    • Modifies WinLogon for persistence

      persistence

    • Process spawned unexpected child process

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

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

      rat

    • 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

      persistence

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks