General

  • Target
    EAX Advanced HD.rar
  • Size 2.8MB
  • Sample260914-sjaarabd37
  • SHA256 c17deb3159afa6cc3b26863de0aa8be542fac24a42573802a8f293f5b9cabc84
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • umbral

Version
  • v1.3

C2
  • https://discord.com/api/webhooks/1548723145387544596/arUdv6tkx5u1Qh42y_3rSjjSl6kw6I3-oD3L5zJDhUHxHXwHxTUy7VRKR2Akg6d4DNck

Targets

    • Target
      EAX Advanced HD.rar
    • Size 2.8MB
    • SHA256 c17deb3159afa6cc3b26863de0aa8be542fac24a42573802a8f293f5b9cabc84
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detects Umbral payload

    • Family: Umbral

      Umbral stealer is an open-source modular stealer written in C#.

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Disables one or more Microsoft Defender components

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

    • Drops file in Drivers directory

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • 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.

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • 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.

MITRE ATT&CK Enterprise v16

Tasks