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

Related detections9 linkedT1055 — drag to rearrange

Malicious AddInProcess32 Network Beacon on PureRAT C2 Ports

Suspicious Payload Staging in ProgramData IntelDriver Folder (via file_event)

Possible DarkGate Process Injection via iTunesHelper Spawning vbc.exe

Suspicious PowerShell Shellcode Loader via Function Pointer Delegate

Suspicious Named Pipe Created by Kazuar Backdoor for Interprocess Command Channel

Suspicious SmallTiger Backdoor DLL Load via Image Load

Suspicious svchost Execution With Anomalous Arguments via DeedRAT (via process_creation)

Suspicious Sang Loader Execution with Install or PassUAC Arguments

Suspicious GodRAT Shellcode Injection via Puppet Argument (via process_creation)

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

Convert

This rule as a query you can run. Uses no unlock credit.

SplunkSPL