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
New Root Certificate Authority Added
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
New Root Certificate Authority Added
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: New Root Certificate Authority Added
id: 4bb80281-3756-4ec8-a88e-523c5a6fda9e
status: test
description: Detects newly added root certificate authority to an AzureAD tenant to support certificate based authentication.
references:
- https://posts.specterops.io/passwordless-persistence-and-privilege-escalation-in-azure-98a01310be3f
- https://goodworkaround.com/2022/02/15/digging-into-azure-ad-certificate-based-authentication/
author: Harjot Shah Singh, '@cyb3rjy0t'
date: 2024-03-26
tags:
- attack.defense-evasion
- attack.credential-access
- attack.persistence
- attack.privilege-escalation
- attack.t1556
logsource:
product: azure
service: auditlogs
detection:
selection:
OperationName: 'Set Company Information'
TargetResources.modifiedProperties.newValue|contains: 'TrustedCAsForPasswordlessAuth'
condition: selection
falsepositives:
- Unknown
level: medium
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/cloud/azure/audit_logs/azure_ad_new_root_ca_added.yml