PsExec Tool Execution From Suspicious Locations - PipeName

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

Detects PsExec default pipe creation where the image executed is located in a suspicious location. Which could indicate that the tool is being used in an attack

MITRE ATT&CK coverage

Tactic	Techniques
Execution	`T1569.002` System Services: Service Execution

Event coverage

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

Stages and Predicates

Stage 1: `selection`

or:
Image|contains: ':\Users\Public\'
Image|contains: ':\Windows\Temp\'
Image|contains: '\AppData\Local\Temp\'
Image|contains: '\Desktop\'
Image|contains: '\Downloads\'
PipeName: '\PSEXESVC'

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.