Windows Defender AMSI Trigger Detected

Description

Detects triggering of AMSI by Windows Defender.

Query · sigma

selection:
  EventID: 1116
  SourceName: AMSI
condition: selection

Known false positives

  • Unlikely
Raw source Windows Defender AMSI Trigger Detected · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: Windows Defender AMSI Trigger Detected
id: ea9bf0fa-edec-4fb8-8b78-b119f2528186
status: stable
description: Detects triggering of AMSI by Windows Defender.
references:
    - https://learn.microsoft.com/en-us/windows/win32/amsi/how-amsi-helps
author: Bhabesh Raj
date: 2020-09-14
modified: 2022-12-07
tags:
    - attack.execution
    - attack.t1059
logsource:
    product: windows
    service: windefend
detection:
    selection:
        EventID: 1116 # The antimalware platform detected malware or other potentially unwanted software.
        SourceName: 'AMSI'
    condition: selection
falsepositives:
    - Unlikely
level: high

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