Elastic high stable eql

Bypass UAC via Event Viewer

Identifies User Account Control (UAC) bypass via eventvwr.exe. Attackers bypass UAC to stealthily execute code with elevated permissions.

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Detection Logic

process where host.os.type == "windows" and event.type == "start" and
  process.parent.name : "eventvwr.exe" and
  not process.executable : (
        "?:\\Windows\\SysWOW64\\mmc.exe",
        "?:\\Windows\\System32\\mmc.exe",
        "?:\\Windows\\SysWOW64\\WerFault.exe",
        "?:\\Windows\\System32\\WerFault.exe",

        /* Crowdstrike specific exclusion as it uses NT Object paths */
        "\\Device\\HarddiskVolume*\\Windows\\Sys?????\\mmc.exe",
        "\\Device\\HarddiskVolume*\\Windows\\Sys?????\\WerFault.exe"
  )

Field Validations

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