SigmaHQ/rules/windows/powershell/powershell_alternate_powershell_hosts.yml

33 lines
1.1 KiB
YAML

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
author: Roberto Rodriguez @Cyb3rWard0g
references:
- https://github.com/Cyb3rWard0g/ThreatHunter-Playbook/tree/master/playbooks/windows/02_execution/T1086_powershell/alternate_signed_powershell_hosts.md
tags:
- attack.execution
- attack.t1059.001
- attack.t1086 # an old one
logsource:
product: windows
service: powershell
detection:
selection:
EventID:
- 4103
- 400
ContextInfo: '*'
filter:
- ContextInfo: 'powershell.exe'
- Message: 'powershell.exe'
# Both fields contain key=value pairs where the key HostApplication ist relevant but
# can't be referred directly as event field.
condition: selection and not filter
falsepositives:
- Programs using PowerShell directly without invocation of a dedicated interpreter
- MSP Detection Searcher
- Citrix ConfigSync.ps1
level: medium