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
User Added to Local Administrators Group
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
User Added to Local Administrators Group
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: User Added to Local Administrators Group
id: ad720b90-25ad-43ff-9b5e-5c841facc8e5
related:
- id: ffa28e60-bdb1-46e0-9f82-05f7a61cc06e # Remote Desktop groups
type: similar
- id: 10fb649c-3600-4d37-b1e6-56ea90bb7e09 # Privileged groups
type: similar
status: test
description: Detects addition of users to the local administrator group via "Net" or "Add-LocalGroupMember".
references:
- https://blog.talosintelligence.com/2022/08/recent-cyber-attack.html?m=1
author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)
date: 2022-08-12
modified: 2023-03-02
tags:
- attack.privilege-escalation
- attack.persistence
- attack.t1098
logsource:
category: process_creation
product: windows
detection:
selection_main:
- CommandLine|contains|all:
# net.exe
- 'localgroup '
- ' /add'
- CommandLine|contains|all:
# powershell.exe
- 'Add-LocalGroupMember '
- ' -Group '
selection_group:
CommandLine|contains:
- ' administrators '
- ' administrateur' # Typo without an 'S' so we catch both
condition: all of selection_*
falsepositives:
- Administrative activity
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_add_user_local_admin_group.yml