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
Suspicious Userinit Child Process
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Suspicious Userinit Child Process
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: Suspicious Userinit Child Process
id: b655a06a-31c0-477a-95c2-3726b83d649d
status: test
description: Detects a suspicious child process of userinit
references:
- https://twitter.com/SBousseaden/status/1139811587760562176
author: Florian Roth (Nextron Systems), Samir Bousseaden (idea)
date: 2019-06-17
modified: 2025-10-17
tags:
- attack.privilege-escalation
- attack.defense-evasion
- attack.t1055
logsource:
category: process_creation
product: windows
detection:
selection:
ParentImage|endswith: '\userinit.exe'
filter_main_netlogon:
CommandLine|contains: '\netlogon\'
filter_main_explorer:
- Image|endswith: '\explorer.exe'
- OriginalFileName: 'explorer.exe'
- CommandLine: 'C:\Windows\Explorer.EXE'
filter_main_null:
Image: null
condition: selection and not 1 of filter_main_*
falsepositives:
- Administrative scripts
level: medium
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/windows/process_creation/proc_creation_win_susp_userinit_child.yml