Detection rules › Sigma
Execute Pcwrun.EXE To Leverage Follina
Detects indirect command execution via Program Compatibility Assistant "pcwrun.exe" leveraging the follina (CVE-2022-30190) vulnerability
Known false positives
- Unlikely
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Stealth |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
| Security-Auditing | Event ID 4688: A new process has been created. |
Rule body
title: Execute Pcwrun.EXE To Leverage Follina
id: 6004abd0-afa4-4557-ba90-49d172e0a299
status: test
description: Detects indirect command execution via Program Compatibility Assistant "pcwrun.exe" leveraging the follina (CVE-2022-30190) vulnerability
references:
- https://twitter.com/nas_bench/status/1535663791362519040
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-06-13
tags:
- attack.stealth
- attack.t1218
- attack.execution
logsource:
category: process_creation
product: windows
detection:
selection:
Image|endswith: '\pcwrun.exe'
CommandLine|contains: '../'
condition: selection
falsepositives:
- Unlikely
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
Image|endswith: '\pcwrun.exe'
CommandLine|contains: '../'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match value:"../" |
Image | ends_with |
| field:"Image" kind:ends_with value:"\pcwrun.exe" |