Extracted

• • Target

    Update.exe

  • Size

    38.5MB

  • MD5

    e1677dda9029b6a47c09f89fadcb32fe

  • SHA1

    2ba06de5df5348336de4218d8dfb08cb89687f29

  • SHA256

    85d1a8a1b427c26b9b6d304658dcef90998687e1ca894293bbe335da9b79eb69

  • SHA512

    5189213d706def83e4be07c2557dedf34e35c305a8453417083027c03d32822687fcd3d1d55778449d51ee97d4293fd7f489ef7a673bb956318f44c629bd5107

  • SSDEEP

    786432:5RQBrMQP00pusvRWJ67Q/UBBf3gss9rUqJsQ5mmKr1+5dbRho:5ROrLLvRk/ywss5Jwkd

  Score

  10^/10

  upxgurcumilleniumratdiscoveryevasionexecutionpersistencepyinstallerratspywarestealer

  • Gurcu, WhiteSnake

    Gurcu is a malware stealer written in C#.

    stealergurcu

  • MilleniumRat

    MilleniumRat is a remote access trojan written in C#.

    ratstealermilleniumrat

  • 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 (1000) amount of remote hosts

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

    discovery

  • 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

  • UPX packed file

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

    upx

  • Accesses cryptocurrency files/wallets, possible credential harvesting

    spyware

  • 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

  • Suspicious use of NtSetInformationThreadHideFromDebugger

  • Suspicious use of SetThreadContext

  behavioral1behavioral2