Extracted

• • Target

    checker.exe

  • Size

    27.3MB

  • MD5

    b88f1340f5934f4e81a06b322cecae5c

  • SHA1

    6b6d63fec4546ecde4eee6e710f0845fd84a19cf

  • SHA256

    1f0a70334fb3a63b9c70cdfe01c012829cc380970cd6b12936f22d44e3c0e388

  • SHA512

    80135012e70e24ba2aace76661900d95a2dceea2d5ecc184f7632df90f2b9153413806af9c2db2955abb852d908af34fc1a0f79c3ed2bcc09a17bbf79a86065c

  • SSDEEP

    393216:PDfDoc6IuQEofCY7Zqr2/12IJ0jctBfVAAxCQvNjhFAsAiW1UTxgnQnWbexF9iRZ:Pb7nu+fCmxv6cCYC8hXKUVgQPtf4y3

  Score

  10^/10

  gurcumilleniumratdiscoveryevasionexecutionpersistencepyinstallerratspywarestealer

  • Gurcu family

    gurcu

  • Gurcu, WhiteSnake

    Gurcu is a malware stealer written in C#.

    stealergurcu

  • MilleniumRat

    MilleniumRat is a remote access trojan written in C#.

    ratstealermilleniumrat

  • Milleniumrat family

    milleniumrat

  • Modifies WinLogon for persistence

    persistence

  • Process spawned unexpected child process

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

  • Suspicious use of NtCreateProcessExOtherParentProcess

  • Suspicious use of NtCreateUserProcessOtherParentProcess

  • Command and Scripting Interpreter: PowerShell

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

    execution

  • Contacts a large (1501) amount of remote hosts

    This may indicate a network scan to discover remotely running services.

    discovery

  • Stops running service(s)

    evasionexecution

  • 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.

  • 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

  • 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

  • Enumerates processes with tasklist

    discovery

  • Suspicious use of NtSetInformationThreadHideFromDebugger

  • Suspicious use of SetThreadContext

  behavioral1behavioral2