Extracted

• • Target

    tronbrut.exe

  • Size

    6.3MB

  • MD5

    a4ce476a4e63d109116aa3cf97f721c1

  • SHA1

    189b455995960b4655e2dbc41e59cfb43ec50f6d

  • SHA256

    717f02d558e3a6bb0c9e1515d262590cae65b235c2deb01584e7b7e1bb5861ae

  • SHA512

    b66a1231c53fbc316b4ab8f1ad5018a4a0f0be70af30d5a7640dd3a15c0f9e8f595d42c16e6588ad2fda9dba6ad6a28a7131e0bd2fc08200d465893410477d30

  • SSDEEP

    98304:lnY8b3CIfjoazMD/x/0feyGghhpQ940BDlgwdnpka9R/k9t+2+SpXqLGt+t0kVE0:lnYxSqDfyGgtwBdnpkYRMoSENTSfQBd

  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 NtCreateUserProcessOtherParentProcess

  • Command and Scripting Interpreter: PowerShell

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

    execution

  • 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

  behavioral1behavioral2behavioral3