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
Potential CVE-2021-26857 Exploitation Attempt
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Potential CVE-2021-26857 Exploitation Attempt
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: Potential CVE-2021-26857 Exploitation Attempt
id: cd479ccc-d8f0-4c66-ba7d-e06286f3f887
status: stable
description: Detects possible successful exploitation for vulnerability described in CVE-2021-26857 by looking for | abnormal subprocesses spawning by Exchange Server's Unified Messaging service
references:
- https://www.microsoft.com/security/blog/2021/03/02/hafnium-targeting-exchange-servers/
author: Bhabesh Raj
date: 2021-03-03
modified: 2023-02-07
tags:
- attack.t1203
- attack.execution
- cve.2021-26857
- detection.emerging-threats
logsource:
category: process_creation
product: windows
detection:
selection:
ParentImage|endswith: '\UMWorkerProcess.exe'
filter:
Image|endswith:
- 'wermgr.exe'
- 'WerFault.exe'
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-2021-26857/proc_creation_win_exploit_cve_2021_26857_msexchange.yml