Extracted

• • Target

    Client.exe

  • Size

    328KB

  • MD5

    0518135d19cbb497321df931809a30e8

  • SHA1

    34981352c51a3e3b9031902cc3f733d252c12871

  • SHA256

    88cf131986bedc03a33d12ea5392ce09f521d40a056b8576a34ee613f36479e5

  • SHA512

    adfe6c11cf1af4a5b7af799c2e0d89a660f695149407b54449a3ff4b8186dd3fca3f508670aede4b0592942294ca96d156f2f681a2aaf11481c0711670a17fa2

  • SSDEEP

    6144:P5QCJJfSBEmcHe6VlWT8b9uPUfMP0ftbi8J5HW5T:BQNEvHPVle8eaB/HW

  Score

  10^/10

  umbralevasionexecutionpersistencespywarestealertrojan

  • Contains code to disable Windows Defender

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Detect Umbral payload

  • Modifies WinLogon for persistence

    persistence

  • Modifies Windows Defender Real-time Protection settings

    evasiontrojan

  • UAC bypass

    evasiontrojan

  • Umbral

    Umbral stealer is an opensource moduler stealer written in C#.

    stealerumbral

  • Command and Scripting Interpreter: PowerShell

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

    execution

  • Drops file in Drivers directory

  • Modifies AppInit DLL entries

    persistence

  • 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

  • Windows security modification

    evasiontrojan

  • Adds Run key to start application

    persistence

  • Checks whether UAC is enabled

    evasiontrojan

  • 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.

  behavioral1behavioral2