Convert indexed Sigma rules into analyst-ready detections.
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RedSun - Named Pipe Created
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RedSun - Named Pipe Created
Using Splunk · Default · pySigma 2.0.1
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title: RedSun - Named Pipe Created
id: 9b4e7c2a-3f6d-4a8b-b5e9-1c7d3f2e6a4b
status: experimental
description: |
Detects the creation of a named pipe with the hardcoded name "REDSUN".
The RedSun exploit tool uses a pipe with this name for synchronisation and command communication between its components during the Cloud Files API + oplock-based AV bypass and privilege escalation chain.
RedSun creates the pipe as \\??\pipe\REDSUN.
The pipe server listens for the token-duplicated elevated process to connect and respond, completing the privilege escalation from user to SYSTEM.
Presence of this pipe name indicates active or recent RedSun execution.
references:
- https://github.com/Nightmare-Eclipse/RedSun/blob/7456cc8cf066f5e5fc6cdf7d3272a466ebd6b2f6/RedSun.cpp#L591
- https://deadeclipse666.blogspot.com/2026/04/public-disclosure-response-for-cve-2026.html
author: Swachchhanda Shrawan Poudel (Nextron Systems), @unresolvedhost
date: 2026-04-17
tags:
- attack.privilege-escalation
- attack.stealth
- attack.defense-impairment
- attack.t1055
- attack.t1685
- detection.emerging-threats
logsource:
category: pipe_created
product: windows
detection:
selection:
PipeName: '\REDSUN'
condition: selection
falsepositives:
- Unlikely
level: critical
regression_tests_path: regression_data/rules-emerging-threats/2026/Exploits/RedSun/pipe_created_win_exploit_redsun_named_pipe/info.yml
CLI command
Sigma CLI 4.0.0 · Install matching versions, then run from the Phoenix project directory.
python -m pip install 'sigma-cli==4.0.0' 'pysigma==2.0.1' 'pysigma-backend-splunk==3.0.0'
sigma convert --without-pipeline -t splunk -f default 'sigma/rules-emerging-threats/2026/Exploits/RedSun/pipe_created_win_exploit_redsun_named_pipe.yml'