Detection rules › Sigma
HackTool - Koh Default Named Pipe
Detects creation of default named pipes used by the Koh tool
Known false positives
- Unlikely
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Privilege Escalation | |
| Stealth | |
| Credential Access |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 17: PipeEvent (Pipe Created) |
| Sysmon | Event ID 18: PipeEvent (Pipe Connected) |
Rule body
title: HackTool - Koh Default Named Pipe
id: 0adc67e0-a68f-4ffd-9c43-28905aad5d6a
status: test
description: Detects creation of default named pipes used by the Koh tool
references:
- https://github.com/GhostPack/Koh/blob/0283d9f3f91cf74732ad377821986cfcb088e20a/Clients/BOF/KohClient.c#L12
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-07-08
modified: 2023-08-07
tags:
- attack.privilege-escalation
- attack.credential-access
- attack.stealth
- attack.t1528
- attack.t1134.001
logsource:
product: windows
category: pipe_created
definition: 'Note that you have to configure logging for Named Pipe Events in Sysmon config (Event ID 17 and Event ID 18). The basic configuration is in popular sysmon configuration (https://github.com/SwiftOnSecurity/sysmon-config), but it is worth verifying. You can also use other repo, e.g. https://github.com/Neo23x0/sysmon-config, https://github.com/olafhartong/sysmon-modular. How to test detection? You can check powershell script from this site https://svch0st.medium.com/guide-to-named-pipes-and-hunting-for-cobalt-strike-pipes-dc46b2c5f575'
detection:
selection:
PipeName|contains:
- '\imposecost'
- '\imposingcost'
condition: selection
falsepositives:
- Unlikely
level: critical
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
PipeName|contains:
- '\imposecost'
- '\imposingcost'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
PipeName | match |
| field:"PipeName" kind:match |