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
DMSA Link Attributes Modified
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
DMSA Link Attributes Modified
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: DMSA Link Attributes Modified
id: 9b111d8e-92e0-4153-88bc-daefc1333aba
related:
- id: 6c9eb492-e477-4df9-b0f4-571fc9db29cd # Windows Security Modification of msDS-ManagedAccountPrecededByLink Attribute
type: similar
status: experimental
description: |
Detects modification of dMSA link attributes (msDS-ManagedAccountPrecededByLink) via PowerShell scripts.
This command line pattern could be an indicator an attempt to exploit the BadSuccessor privilege escalation vulnerability in Windows Server 2025.
references:
- https://www.akamai.com/blog/security-research/abusing-bad-successor-for-privilege-escalation-in-active-directory
author: Swachchhanda Shrawan Poudel (Nextron Systems)
date: 2025-05-24
tags:
- attack.privilege-escalation
- attack.defense-evasion
- attack.persistence
- attack.initial-access
- attack.t1078.002
- attack.t1098
logsource:
category: ps_script
product: windows
detection:
selection:
ScriptBlockText|contains|all:
- '.Put("msDS-ManagedAccountPrecededByLink'
- 'CN='
condition: selection
falsepositives:
- Legitimate administrative tasks modifying these attributes.
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_modification_of_dmsa_link_attribute.yml