Extracted

• • Target

    Crypt.exe

  • Size

    6.9MB

  • MD5

    d047cd9c503a1b062486d0425688fd16

  • SHA1

    dee8b8024a66ffdf3502a9827fef45493f2644ed

  • SHA256

    8b114ae5d486948a5f4078f2e724d55e0a56014320af07f0f9228e0e77ae6be0

  • SHA512

    5c986ee4c367b8288a7e1ba18d6695b4e8afc40d88d9a4c257f301f38b405ec1d7771efabb189f583be979a02093d841ae510d5f002e3684ae7a8225d27bef28

  • SSDEEP

    196608:hsXGMtKkuX5P62xscItG5gPxioJEhslCM19l+RDIk:hsXGMIkuX5XmcI45gPkgpz1eZIk

  Score

  10^/10

  dcratgurcudiscoveryevasionexecutioninfostealerpersistenceratspywarestealer

  • 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 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

  • Sets file to hidden

    Modifies file attributes to stop it showing in Explorer etc.

    evasion

  • Checks BIOS information in registry

    BIOS information is often read in order to detect sandboxing environments.

  • Checks computer location settings

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

  • Drops startup file

  • Executes dropped EXE

  • Loads dropped DLL

  • 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

  • Enumerates connected drives

    Attempts to read the root path of hard drives other than the default C: drive.

  • Legitimate hosting services abused for malware hosting/C2

  • 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

  behavioral1behavioral2behavioral3