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Convert indexed Sigma rules into analyst-ready detections.

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CLI Versions

Newest: 2.0.2

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Active Rule

Add Windows Capability Via PowerShell Script

sigma-cli version

Backend

Format

Target Profile

Splunk

Splunk SPL & tstats data model queries

Format Mode

Default

Plain SPL queries

Conversion Output

Add Windows Capability Via PowerShell Script

Using Splunk · Default · sigma-cli 2.0.2

Translation controls

Adjust the rule on the left, then regenerate when you want a fresh backend-native query.

BackendSplunkFormatDefaultVersion2.0.2

title: Add Windows Capability Via PowerShell Script
id: 155c7fd5-47b4-49b2-bbeb-eb4fab335429
related:
    - id: b36d01a3-ddaf-4804-be18-18a6247adfcd
      type: similar
status: test
description: Detects usage of the "Add-WindowsCapability" cmdlet to add Windows capabilities. Notable capabilities could be "OpenSSH" and others.
references:
    - https://learn.microsoft.com/en-us/windows-server/administration/openssh/openssh_install_firstuse?tabs=powershell
    - https://www.virustotal.com/gui/file/af1c82237b6e5a3a7cdbad82cc498d298c67845d92971bada450023d1335e267/content
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-01-22
modified: 2023-05-09
tags:
    - attack.execution
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_cmdlet:
        ScriptBlockText|contains: 'Add-WindowsCapability '
    selection_capa:
        ScriptBlockText|contains: '-Name OpenSSH.' # For both "OpenSSH.Server" and "OpenSSH.Client"
    condition: all of selection_*
falsepositives:
    - Legitimate usage of the capabilities by administrators or users. Add additional filters accordingly.
level: medium

CLI command

Copy the exact command to reproduce this translation locally.

sigma convert --without-pipeline -t splunk -f default rules/windows/powershell/powershell_script/posh_ps_add_windows_capability.yml