title: Internal Scanner False Positive Filter
id: be734fb8-0816-5e21-85f6-2df4e91a1669
custom_id: wf-filter-001
status: stable
logsource:
    product: witfoo
    service: artifact-exporter
description: |
    Filters out port scan detections originating from known authorized
    vulnerability scanners and asset discovery tools. Customize the
    scanner IP list to match your environment.
author: WitFoo
date: 2026-02-21
tags:
    - attack.discovery
    - attack.t1046
detection:
    selection:
        messageType: "service_discovery"
    filter_scanners:
        clientIP|cidr:
            - "10.0.0.0/24"
            - "172.16.100.0/24"
        program|contains:
            - "nessus"
            - "qualys"
            - "rapid7"
            - "openvas"
            - "nmap"
    condition: selection and filter_scanners
falsepositives:
    - None expected when scanner IPs are correctly configured
