SigmaHQ/rules/windows/powershell/powershell_suspicious_profile_create.yml

title: Powershell Profile.ps1 Modification
id: b5b78988-486d-4a80-b991-930eff3ff8bf
status: experimental
description: Detects a change in profile.ps1 of the Powershell profile
references:
    - https://www.welivesecurity.com/2019/05/29/turla-powershell-usage/
author: HieuTT35
date: 2019/10/24
modified: 2020/04/03
logsource:
    product: windows
    service: sysmon
detection:
    event:
        EventID: 11
    target1:
        TargetFilename|contains|all: 
            - '\My Documents\PowerShell\'
            - '\profile.ps1'
    target2:
        TargetFilename|contains|all: 
            - 'C:\Windows\System32\WindowsPowerShell\v1.0\'
            - '\profile.ps1'
    condition: event and (target1 or target2)
falsepositives:
    - System administrator create Powershell profile manually
level: high
tags:
    - attack.persistence
    - attack.privilege_escalation
    - attack.t1546.013