Detection rules › Sigma
Run PowerShell Script from ADS
Detects PowerShell script execution from Alternate Data Stream (ADS)
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Stealth |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
| Security-Auditing | Event ID 4688: A new process has been created. |
Rule body
title: Run PowerShell Script from ADS
id: 45a594aa-1fbd-4972-a809-ff5a99dd81b8
status: test
description: Detects PowerShell script execution from Alternate Data Stream (ADS)
references:
- https://github.com/p0shkatz/Get-ADS/blob/1c3a3562e713c254edce1995a7d9879c687c7473/Get-ADS.ps1
author: Sergey Soldatov, Kaspersky Lab, oscd.community
date: 2019-10-30
modified: 2022-07-14
tags:
- attack.stealth
- attack.t1564.004
logsource:
category: process_creation
product: windows
detection:
selection:
ParentImage|endswith:
- '\powershell.exe'
- '\pwsh.exe'
Image|endswith:
- '\powershell.exe'
- '\pwsh.exe'
CommandLine|contains|all:
- 'Get-Content'
- '-Stream'
condition: selection
falsepositives:
- Unknown
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
ParentImage|endswith:
- '\powershell.exe'
- '\pwsh.exe'
Image|endswith:
- '\powershell.exe'
- '\pwsh.exe'
CommandLine|contains|all:
- 'Get-Content'
- '-Stream'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match |
Image | ends_with |
| field:"Image" kind:ends_with |
ParentImage | ends_with |
| field:"ParentImage" kind:ends_with |