Extracted

• • Target

    main.exe

  • Size

    36.5MB

  • MD5

    9f09d0dba3dea3472d039ba178561591

  • SHA1

    bd48f54e05723bce7633e3666e435bc93119a695

  • SHA256

    368b48a3e6134ad48aaf1d16f1f94efd147a2fdd96909cad7e1d15a6e6ce7893

  • SHA512

    7fc8f096e76c64ef4dbd87e3045a3daecabd22cb074f3c10927281aac4c9e7b7e9ce068263078d519692f1d1be3127971c00b37be41254120aab2a267a5b62ed

  • SSDEEP

    786432:p8MdYj/rmTVKqB2cYrlyaBa5/X3QSPTvoIkQxAYamqZKNk:SjiTkrlyzX3QSPZDxlamqZKG

  Score

  10^/10

  gurcumilleniumratdiscoveryevasionexecutionpersistencepyinstallerratspywarestealerupx

  • 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 NtCreateUserProcessOtherParentProcess

  • Contacts a large (2363) amount of remote hosts

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

    discovery

  • Command and Scripting Interpreter: PowerShell

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

    execution

  • Downloads MZ/PE file

  • 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

  • UPX packed file

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  behavioral1