The Windows Filtering Platform has permitted a bind to a local port
A process (`Application Name`) successfully bound and opened a local listening port (`TCP/UDP`).
Event ID 5158 logs when a local application binds to a network port (`Source Port`, `Protocol: TCP/UDP`). When threat actors deploy local command-and-control servers, reverse shells, or proxy relays (`netsh interface portproxy` or reverse SSH tunnels) on compromised endpoints, event `5158` captures the exact process (`Application Name`) and local port opened for listening.
Failure Reason / Root Cause:
Local port bind operation permitted (`Application Name` binding to `Source Port`).
Raw Event XML snippet
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Security-Auditing" Guid="{54849625-5478-4994-A5BA-3E3B0328C30D}" />
<EventID>5158</EventID>
<Version>0</Version>
<Level>0</Level>
<Task>12544</Task>
<Opcode>0</Opcode>
<Keywords>0x8020000000000000</Keywords>
<TimeCreated SystemTime="2026-07-17T09:54:44.938Z" />
<EventRecordID>1048576</EventRecordID>
<Correlation />
<Execution ProcessID="612" ThreadID="1024" />
<Channel>Security</Channel>
<Computer>DC01.enterprise.internal</Computer>
<Security />
</System>
<EventData>
<Data Name="SubjectUserSid">S-1-5-18</Data>
<Data Name="SubjectUserName">SYSTEM</Data>
<Data Name="SubjectDomainName">NT AUTHORITY</Data>
<Data Name="SubjectLogonId">0x3e7</Data>
<!-- Event telemetry fields specific to The Windows Filtering Platform has permitted a bind to a local port -->
</EventData>
</Event>MITRE ATT&CK mapping
| ID | Technique | Tactic |
|---|---|---|
T1572 | Protocol Tunneling / Relay | Command and Control |
T1505 | Server Software Component | Persistence |
Recommended actions
- Inspect `Application Name` and `Source Port`. Alert if unexpected processes bind listening ports (`0.0.0.0:*`) on user workstations.