mirror of
https://github.com/valitydev/SigmaHQ.git
synced 2024-11-07 17:58:52 +00:00
28 lines
860 B
YAML
28 lines
860 B
YAML
title: Powershell AMSI Bypass via .NET Reflection
|
|
id: 30edb182-aa75-42c0-b0a9-e998bb29067c
|
|
status: experimental
|
|
description: Detects Request to amsiInitFailed that can be used to disable AMSI Scanning
|
|
references:
|
|
- https://twitter.com/mattifestation/status/735261176745988096
|
|
- https://www.hybrid-analysis.com/sample/0ced17419e01663a0cd836c9c2eb925e3031ffb5b18ccf35f4dea5d586d0203e?environmentId=120
|
|
tags:
|
|
- attack.execution
|
|
- attack.defense_evasion
|
|
- attack.t1086
|
|
author: Markus Neis
|
|
date: 2018/08/17
|
|
logsource:
|
|
category: process_creation
|
|
product: windows
|
|
detection:
|
|
selection1:
|
|
CommandLine:
|
|
- '*System.Management.Automation.AmsiUtils*'
|
|
selection2:
|
|
CommandLine:
|
|
- '*amsiInitFailed*'
|
|
condition: selection1 and selection2
|
|
falsepositives:
|
|
- Potential Admin Activity
|
|
level: high
|