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blue-team-tools/rules/windows/powershell/powershell_alternate_powershell_hosts.yml
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2021-08-03 10:04:15 +02:00

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YAML

action: global
title: Alternate PowerShell Hosts
id: 64e8e417-c19a-475a-8d19-98ea705394cc
description: Detects alternate PowerShell hosts potentially bypassing detections looking for powershell.exe
status: experimental
date: 2019/08/11
modified: 2021/08/03
author: Roberto Rodriguez @Cyb3rWard0g
references:
- https://threathunterplaybook.com/notebooks/windows/02_execution/WIN-190815181010.html
tags:
- attack.execution
- attack.t1059.001
- attack.t1086 # an old one
falsepositives:
- Programs using PowerShell directly without invocation of a dedicated interpreter
- MSP Detection Searcher
- Citrix ConfigSync.ps1
level: medium
detection:
filter:
- ContextInfo: 'powershell.exe'
- Message: 'powershell.exe'
# Both fields contain key=value pairs where the key HostApplication is relevant but
# can't be referred directly as event field.
condition: selection and not filter
---
logsource:
product: windows
service: powershell
detection:
selection:
EventID: 4103
ContextInfo: '*'
---
logsource:
product: windows
service: powershell-classic
detection:
selection:
EventID: 400
ContextInfo: '*'