Extracted

• • Target

    DCRatBuild.exe

  • Size

    3.5MB

  • MD5

    accbf832237d67ef4d2365eb58ec879a

  • SHA1

    f4783cc5a710dbad978e5822baa1434667afdbf9

  • SHA256

    3e5248f104ad4f61a08be2095ad66b15b70eb71eadae6069f3934b2e8015662e

  • SHA512

    d57aff8691e2599ec499f0bfd60993a4d50d5ac24dfb241d92cde09ecc6b5d13d6382ee5bc37159daaf7524d40ad2191c7319a7a2c94098b8819121450bc0e25

  • SSDEEP

    98304:yavksCUOrq2tIMV6fjGDYt8Ucu0ne+Enl0nZko:UIKq2tdVRi820nAlTo

  Score

  10^/10

  dcratgurcudiscoveryexecutioninfostealerpersistenceratspywarestealer

  • DcRat

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

    ratinfostealerdcrat

  • Dcrat family

    dcrat

  • Gurcu family

    gurcu

  • Gurcu, WhiteSnake

    Gurcu aka WhiteSnake is a malware stealer written in C#.

    stealergurcu

  • Modifies WinLogon for persistence

    persistence

  • Process spawned unexpected child process

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

  • Command and Scripting Interpreter: PowerShell

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

    execution

  • Checks computer location settings

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

  • Executes dropped EXE

  • Reads user/profile data of web browsers

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer

  • Adds Run key to start application

    persistence

  • Looks up external IP address via web service

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory

  behavioral1