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blue-team-tools/rules/windows/process_creation/proc_creation_win_susp_pester.yml
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2022-10-28 15:06:36 +02:00

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YAML

title: Execute Code with Pester.bat
id: 59e938ff-0d6d-4dc3-b13f-36cc28734d4e
status: test
description: Detects code execution via Pester.bat (Pester - Powershell Modulte for testing)
references:
- https://twitter.com/Oddvarmoe/status/993383596244258816
author: Julia Fomina, oscd.community
date: 2020/10/08
modified: 2022/07/14
tags:
- attack.execution
- attack.t1059.001
- attack.defense_evasion
- attack.t1216
logsource:
category: process_creation
product: windows
detection:
powershell_module:
Image|endswith:
- '\powershell.exe'
- '\pwsh.exe'
CommandLine|contains|all:
- 'Pester'
- 'Get-Help'
cmd_execution:
Image|endswith: '\cmd.exe'
CommandLine|contains|all:
- 'pester'
- ';'
get_help:
CommandLine|contains:
- 'help'
- '?'
condition: powershell_module or (cmd_execution and get_help)
falsepositives:
- Legitimate use of Pester for writing tests for Powershell scripts and modules
level: medium