HackTool - Koh Default Named Pipe

Severity: critical
Author: Nasreddine Bencherchali (Nextron Systems)
Source: upstream

Detects creation of default named pipes used by the Koh tool

MITRE ATT&CK coverage

Tactic	Techniques
Privilege Escalation	`T1134.001` Access Token Manipulation: Token Impersonation/Theft
Defense Evasion	`T1134.001` Access Token Manipulation: Token Impersonation/Theft
Credential Access	`T1528` Steal Application Access Token

Event coverage

Provider	Event ID	Title
Sysmon	17	PipeEvent (Pipe Created)
Sysmon	18	PipeEvent (Pipe Connected)

Stages and Predicates

Stage 1: `selection`

or:
PipeName|contains: '\imposecost'
PipeName|contains: '\imposingcost'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.