Extracted

• • Target

    main.exe

  • Size

    37.5MB

  • MD5

    8c8bb6c097891887fc0248221dd5e338

  • SHA1

    1768fda5862236c84c1f37855f09daa48406f524

  • SHA256

    562f669dd804b59934e61e07455c2fc4b5be3d7060f8ce5447244e50a444f695

  • SHA512

    11dcedf1277f573b9a0a3f426fc1df40c579a33025e957d0fe19d43cec79559c3c8aa000d8bf0e69f0ee35485ef9f675084b815c9cdfbdefd21900f6a801f770

  • SSDEEP

    786432:W8MdYj/rmTVKqB2cYrlyaBa5/X3QSPTvoIkQJh9cnE8pKNY:pjiTkrlyzX3QSPZDlcEmK+

  Score

  10^/10

  upxgurcumilleniumratdiscoveryevasionexecutionpersistencepyinstallerratspywarestealer

  • 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 (2210) 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 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
  behavioral1behavioral2