Detection rules › Sigma
PUA - Crassus Execution
Detects Crassus, a Windows privilege escalation discovery tool, based on PE metadata characteristics.
Known false positives
- Unlikely
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Reconnaissance |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
Rule body
title: PUA - Crassus Execution
id: 2c32b543-1058-4808-91c6-5b31b8bed6c5
status: test
description: Detects Crassus, a Windows privilege escalation discovery tool, based on PE metadata characteristics.
references:
- https://github.com/vu-ls/Crassus
author: pH-T (Nextron Systems)
date: 2023-04-17
tags:
- attack.discovery
- attack.reconnaissance
- attack.t1590.001
logsource:
category: process_creation
product: windows
detection:
selection:
- Image|endswith: '\Crassus.exe'
- OriginalFileName: 'Crassus.exe'
- Description|contains: 'Crassus'
condition: selection
falsepositives:
- Unlikely
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
- Image|endswith: '\Crassus.exe'
- OriginalFileName: 'Crassus.exe'
- Description|contains: 'Crassus'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
Description | match |
| field:"Description" kind:match value:"Crassus" |
Image | ends_with |
| field:"Image" kind:ends_with value:"\Crassus.exe" |
OriginalFileName | eq |
| field:"OriginalFileName" kind:eq value:"Crassus.exe" |