Extracted

• • Target

    jarbest-obf.jar

  • Size

    6.8MB

  • MD5

    183038eacde2898dd081ea76f73775a3

  • SHA1

    c1ea9bbd90f8ce35ea00d09f76254976f35e3cba

  • SHA256

    405633b7f6c5ecfa971f23dbb09e85d40224bb74c83ffdafb827b301bc413427

  • SHA512

    edba63707f4f257eb94503fe481db88dd28347e0a2d01836242ed9052164d340ff629c1585054c28a8cd2c867a8968c467b14cf2ac05bf8c73164843fcfa91f9

  • SSDEEP

    196608:TsXGMtKkuX5P62xscItG5gPxioJEhslCM19l+RDIk:TsXGMIkuX5XmcI45gPkgpz1eZIk

  Score

  10^/10

  dcratgurcudiscoveryevasionexecutioninfostealerpersistenceratstealer

  • 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

  • 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