Extracted

• • Target

    Umbral.bat

  • Size

    468KB

  • MD5

    50c1619dde4c59211f2220d19fd7a2ff

  • SHA1

    f89a90307b00ff0bd2733642ea43427bc304c730

  • SHA256

    b99eb432b5d440a41faf8ed09c3df4ff0cf82ca13fefed8c2cb56ca96960ab4d

  • SHA512

    ed591a3357cc3e3487b708f2e08a74683c93d5e5e16d1978f90f4dc37b77f147bb36ba3cb55318d146c0831f7636baa22006b6c9960db3e8a72dbdc798efb627

  • SSDEEP

    12288:7WdGCJGwwo92cPLI0O8JtFDUB9PvBxdCAI2hlojjF9xq:SNswwxcjJngP3PdCVuM9xq

  Score

  10^/10

  umbraldefense_evasionexecutionstealer

  • Detect Umbral payload

  • Umbral

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

    stealerumbral

  • Blocklisted process makes network request

  • Command and Scripting Interpreter: PowerShell

    Run Powershell and hide display window.

    execution

  • Indicator Removal: Clear Windows Event Logs

    Clear Windows Event Logs to hide the activity of an intrusion.

    defense_evasion

  • 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

  behavioral1