Possible Host Port Scan from Single Source Address (via network_connection)

ATT&CK techniques

Recon → Discovery

Recon
- T1595.001Scanning IP Blocks
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
- T1046Network Service Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects a single source address initiating a high volume of TCP connections to many distinct destination ports on one host in a short window, indicating host port scanning. Observed in Elastic Security Labs detection engineering guidance where more than fifty distinct destination ports contacted rapidly reveals reconnaissance ahead of exploitation.

Reporting behind it

Related detections9 linkedT1046 — drag to rearrange

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Possible Host Port Scan from Single Source Address (via network_connection)

Pivot detection · T1046 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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