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 Computer Account Name Change CVE-2021-42287
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Suspicious Computer Account Name Change CVE-2021-42287
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 Computer Account Name Change CVE-2021-42287
id: 45eb2ae2-9aa2-4c3a-99a5-6e5077655466
status: test
description: Detects the renaming of an existing computer account to a account name that doesn't contain a $ symbol as seen in attacks against CVE-2021-42287
references:
- https://medium.com/@mvelazco/hunting-for-samaccountname-spoofing-cve-2021-42287-and-domain-controller-impersonation-f704513c8a45
author: Florian Roth (Nextron Systems)
date: 2021-12-22
modified: 2022-12-25
tags:
- attack.privilege-escalation
- attack.defense-evasion
- attack.persistence
- attack.t1036
- attack.t1098
- cve.2021-42287
- detection.emerging-threats
logsource:
product: windows
service: security
detection:
selection:
EventID: 4781 # rename user
OldTargetUserName|contains: '$'
filter:
NewTargetUserName|contains: '$'
condition: selection and not filter
falsepositives:
- Unknown
level: high
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules-emerging-threats/2021/Exploits/CVE-2021-42287/win_security_samaccountname_spoofing_cve_2021_42287.yml