Describe the behaviour you want to detect. SARA writes a starting Sigma rule with MITRE tags, false-positive guidance, and detection-engineering context. Anonymous, no account, best-effort generic detection.
title: CVE-2024-55550 Exploitation Attempt via PowerShell Module Loading
id: 6372732f-0bd7-4108-9ae1-bbefd7e0133e
status: experimental
description: |
Detects exploitation attempts of CVE-2024-55550, a CISA KEV-listed vulnerability.
This rule is a starting point — tune for your environment.
The detection looks for PowerShell execution with specific module loading parameters
that match the publicly observed exploitation pattern.
references:
- https://nvd.nist.gov/vuln/detail/CVE-2024-55550
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog
author: SARA Detection Engineering
date: 2026-08-15
tags:
- attack.execution
- attack.t1059.001
logsource:
category: process_creation
product: windows
detection:
selection_img:
Image|endswith:
- '\powershell.exe'
- '\pwsh.exe'
selection_cli:
CommandLine|contains|all:
- '-ExecutionPolicy'
- 'Bypass'
- '-Command'
- 'Import-Module'
filter_system:
ParentImage|startswith:
- 'C:\Windows\System32\'
- 'C:\Windows\SysWOW64\'
condition: selection_img and selection_cli and not filter_system
falsepositives:
- Legitimate administrative scripts that require explicit module loading via command line
- Software installation scripts that use PowerShell to configure modules
level: high
Sigma is the open, vendor-neutral format for log-based detections. One rule, written once, converts to Splunk SPL, Elastic ES|QL, KQL for Microsoft Sentinel, Sumo, Chronicle, QRadar, and more. Detection engineers love it for the same reason ATT&CK is the lingua franca for tactics — Sigma is the lingua franca for the queries that detect them.
You've got a fresh write-up of a TTP and need a starting detection in your stack today. Generate, tune, ship.
Pair-program with SARA: the generator produces the skeleton, the engineer learns by tuning, the team commits the result.
You have a rule in one query language; describe it in English and get the Sigma version + conversions to every other backend.
Sketch a detection idea in 30 seconds before investing in a full DE sprint.
SARA Open ships an OpenAI-compatible API. Call POST /api/v1/sigma — Plain English in, valid Sigma YAML out, with MITRE tags and false-positive guidance.
curl -X POST https://sara-open.sirp.io/api/v1/sigma \
-H "Authorization: Bearer $SARA_API_KEY" \
-H "Content-Type: application/json" \
-d '{"description": "PowerShell encoded command from Office"}'
Read the API reference →