Phoenix Studio
Convert indexed Sigma rules into analyst-ready detections.
This studio is built around Phoenix's own rule corpus, not a blank editor. Search by title or rule id, choose a live sigma-cli backend, then reveal pipelines only when you actually need them.
Indexed Rules
3,707
Ready to search
Backends
17
Live from sigconverter.io
CLI Versions
10
Newest: 2.0.2
Translation Workspace
Shape the rule before it leaves Phoenix
Tune Translation
Active Rule
Replace Desktop Wallpaper by Powershell
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Replace Desktop Wallpaper by Powershell
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: Replace Desktop Wallpaper by Powershell
id: c5ac6a1e-9407-45f5-a0ce-ca9a0806a287
status: test
description: |
An adversary may deface systems internal to an organization in an attempt to intimidate or mislead users.
This may take the form of modifications to internal websites, or directly to user systems with the replacement of the desktop wallpaper
references:
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1491.001/T1491.001.md
author: frack113
date: 2021-12-26
tags:
- attack.impact
- attack.t1491.001
logsource:
product: windows
category: ps_script
definition: 'Requirements: Script Block Logging must be enabled'
detection:
selection_1:
ScriptBlockText|contains|all:
- 'Get-ItemProperty'
- 'Registry::'
- 'HKEY_CURRENT_USER\Control Panel\Desktop\'
- 'WallPaper'
selection_2:
ScriptBlockText|contains: SystemParametersInfo(20,0,*,3)
condition: 1 of selection_*
falsepositives:
- Unknown
level: low
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_susp_wallpaper.yml