Extracted

• • Target
    Umbral.exe
  • Size 229KB
  • SHA256 f0b52015f6fb6370f23e7b1af72433689736bd8646043c9239d0ffa97048c062
  • MD5 0e36cbac7315440e1c04be773097d2db
  • SHA1 823153ba526537be8d39cc0487fda79c5e3fc902
  • SHA512 8ea156c940a0d70317d7c321ad287150b45270eab70cb44c8098a74312debd27321b6fe1aa8e7e5323bd55d24c09d6653b524a1d0aa64285e602c23acf1d83c4
  • SSDEEP 6144:tloZMNrIkd8g+EtXHkv/iD4epVZn9GuBM0dP6aPF0b8e1m9i:voZmL+EP8epVZn9GuBM0dP6aPG3
  • TLSH
    T151347C4933B88F17E25F8BBED5B1159F87B1F143E80AF78E0C8895E82411B42E949E57
  • MD5 SHA1 SHA512 SSDEEP TLSH

  Score

  10^/10

  defense_evasiondiscoveryexecutionumbralspywarestealer

  • Detects Umbral payload

  • Family: Umbral

    Umbral stealer is an open-source modular 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

  • Disables one or more Microsoft Defender components

    Uses the Powershell Set-MpPreference cmdlet to disable one or more Microsoft Defender components.

    defense_evasion

  • Disables automatic submission of suspicious files to Microsoft by Windows Defender

    Uses the Powershell Set-MpPreference cmdlet to prevent Windows Defender from automatically sending files to Microsoft for analysis.

    defense_evasion

  • Reads user/profile data of web browsers

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

    spywarestealer

  • Contacts third-party web service commonly abused for C2

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Looks up external IP address via web service

    Uses a legitimate IP lookup service to find the infected system's external IP.

    discovery
  behavioral1