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 Remote Desktop Users Group
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
User Added to Remote Desktop Users 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 Remote Desktop Users Group
id: ffa28e60-bdb1-46e0-9f82-05f7a61cc06e
related:
- id: ad720b90-25ad-43ff-9b5e-5c841facc8e5 # Admin groups
type: similar
- id: 10fb649c-3600-4d37-b1e6-56ea90bb7e09 # Privileged groups
type: similar
status: test
description: Detects addition of users to the local Remote Desktop Users group via "Net" or "Add-LocalGroupMember".
references:
- https://www.microsoft.com/security/blog/2021/11/16/evolving-trends-in-iranian-threat-actor-activity-mstic-presentation-at-cyberwarcon-2021/
author: Florian Roth (Nextron Systems)
date: 2021-12-06
modified: 2022-09-09
tags:
- attack.initial-access
- attack.persistence
- attack.lateral-movement
- attack.t1133
- attack.t1136.001
- attack.t1021.001
logsource:
category: process_creation
product: windows
detection:
selection_main:
- CommandLine|contains|all:
- 'localgroup '
- ' /add'
- CommandLine|contains|all:
- 'Add-LocalGroupMember '
- ' -Group '
selection_group:
CommandLine|contains:
- 'Remote Desktop Users'
- 'Utilisateurs du Bureau à distance' # French for "Remote Desktop Users"
- 'Usuarios de escritorio remoto' # Spanish for "Remote Desktop Users"
condition: all of selection_*
falsepositives:
- Administrative activity
level: high
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_remote_desktop_group.yml