Windows Named Pipe Created with Name "REDSUN"

Flags creation of the named pipe \REDSUN on Windows, consistent with RedSun-style IPC used during exploitation.

FreeReviewedSigma · Critical · v5

Product: windows
Category: pipe_created
Author: Swachchhanda Shrawan Poudel (Nextron Systems), @unresolvedhost (SigmaHQ), DRL 1.1
Published: 2026-04-17
Updated: 2026-07-31

ATT&CK techniques

Priv Esc → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
- T1055Process Injection
Defense Evasion
- T1055Process Injection
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule identifies creation of a Windows named pipe whose name is hardcoded as "REDSUN" (\??\pipe\REDSUN). Attackers can use named pipes for synchronization and inter-process command communication during multi-stage exploitation and privilege escalation. Detection relies on telemetry that records named pipe creation events and the pipe name value.

Reporting behind it

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Windows Named Pipe Created with Name "REDSUN"

Pivot detection · T1055 · 9 related

Changelog

v5
Candidate ingested via manual entry.2026-07-31
v4
Candidate ingested via manual entry.2026-07-31
v3
Candidate ingested via manual entry.2026-07-31
v2
Candidate ingested via manual entry.2026-07-31
v1
No changelog recorded for this version.2026-07-30

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

windows-named-pipe-created-redsun-redsun-9b4e7c2a

title: Windows Named Pipe Created with Name "REDSUN"
id: 4ebb5799-89e5-4873-a897-617c8ac06a20
status: experimental
description: This rule identifies creation of a Windows named pipe whose name is hardcoded as "REDSUN" (\??\pipe\REDSUN). Attackers can use named pipes for synchronization and inter-process command communication during multi-stage exploitation and privilege escalation. Detection relies on telemetry that records named pipe creation events and the pipe name value.
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
  - https://github.com/SigmaHQ/sigma/blob/master/rules-emerging-threats/2026/Exploits/RedSun/pipe_created_win_exploit_redsun_named_pipe.yml
author: Swachchhanda Shrawan Poudel (Nextron Systems), @unresolvedhost, Huntrule Team
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
license: DRL-1.1
related:
  - id: 9b4e7c2a-3f6d-4a8b-b5e9-1c7d3f2e6a4b
    type: derived

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