Extracted

• • Target

    Client.exe

  • Size

    380KB

  • MD5

    7091d715676e10c44205e6fa7f50b7bd

  • SHA1

    a950398047b6b554181538d6e78ada18bfba510e

  • SHA256

    23f43cc11c07245b3c5c14333a53b97330ebd7afa4a893245834fbebfa967d88

  • SHA512

    2fd66a8fd5b4d0f1ef52f6cd89b8e14936b56fdb967a83382d8081e67fbbabdb609decef98d19c8caebcc1b5b9bcc3cbaa0209112c9c081556ff87bfcdf7308b

  • SSDEEP

    6144:MwZC8z6GIwaC9M1G4TIcgGz+rH4uCBbhZnKMgVia:RZC8OGgt1G4TGY+NCNn4Vi

  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

  • UAC bypass

    evasiontrojan

  • Umbral

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

    stealerumbral

  • Command and Scripting Interpreter: PowerShell

    Start PowerShell.

    execution

  • Drops file in Drivers directory

  • Executes dropped EXE

  • Reads user/profile data of web browsers

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer

  • 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