title: Service Discovery Activity
id: 8c303506-bd68-5cd6-a98f-944d27bf0e6c
custom_id: wf-auth-008
status: stable
level: medium
description: |
    Detects service discovery and network enumeration activity that may indicate
    reconnaissance by an attacker who has gained initial access. Includes port
    scanning, service fingerprinting, and network mapping.
author: WitFoo
date: 2026-02-21
tags:
    - attack.discovery
    - attack.t1046
references:
    - https://attack.mitre.org/techniques/T1046/
logsource:
    product: witfoo
    service: artifact-exporter
detection:
    selection:
        messageType: "service_discovery"
    condition: selection
fields:
    - clientIP
    - serverIP
    - serverPort
    - protocol
    - userName
    - matchedLeadRules
falsepositives:
    - Authorized network scanning and inventory tools
    - IT asset discovery systems
    - Network monitoring and management platforms
