win:security 5156
The Windows Filtering Platform has allowed a connection.
- Log source
- Windows Security event log
- Host type
- Windows (workstation, member server, domain controller)
- How to enable
- Advanced Audit Policy: Object Access > Audit Filtering Platform Connection
- Audit category
- Object Access
- Audit subcategory
- Audit Filtering Platform Connection
- Tier, host type
- Minimum
- Techniques
- 4
- Rules depending on it
- Sigma 3, Microsoft Sentinel 1
Why this tier
Microsoft audit baseline (dc); Microsoft audit baseline (server); Microsoft audit baseline (workstation)
By role
| Role | Tier | Basis |
|---|---|---|
| Windows workstation | Minimum | Microsoft audit baseline (workstation) |
| Windows member server | Minimum | Microsoft audit baseline (server) |
| Windows domain controller | Minimum | Microsoft audit baseline (dc); Microsoft audit baseline (server) |
| Windows web server (IIS), internet-facing | Minimum | Microsoft audit baseline (server) |
Techniques it helps detect
Rules that depend on it
Sigma 3
- RDP over Reverse SSH Tunnel WFP by Samir Bousseaden
- Remote PowerShell Sessions Network Connections (WinRM) by Roberto Rodriguez @Cyb3rWard0g
- Uncommon Outbound Kerberos Connection - Security by Ilyas Ochkov, oscd.community
Microsoft Sentinel 1
Standards and guidance naming it
| Requirement | Relation | Basis |
|---|---|---|
| OMB M-26-14: Network source and destinationAppendix B item 5(2) | Supports an activity | our analysis: Filtering Platform permitted connections |
| Microsoft: Events to monitor with potential criticalityAppendix L: Events to Monitor (Windows Server AD DS best practices) | Names this event | potential criticality Low: The Windows Filtering Platform has allowed a connection. |
EDR events that stand in for it
Full: the sensor event carries what this event carries. Partial: the sensor reports a subset, so it does not replace the event.
| Product | Sensor event | Fidelity | Basis |
|---|---|---|---|
| CrowdStrike Falcon sensor telemetry (FDR event_simpleName) | NetworkConnectIP4 | Partial | our analysis: sensor network events cover permitted connections by process; Filtering Platform fields (filter run-time ID, layer) are not present |
| CrowdStrike Falcon sensor telemetry (FDR event_simpleName) | NetworkConnectIP6 | Partial | our analysis: sensor network events cover permitted connections by process; Filtering Platform fields (filter run-time ID, layer) are not present |
| CrowdStrike Falcon sensor telemetry (FDR event_simpleName) | NetworkReceiveAcceptIP4 | Partial | our analysis: sensor network events cover permitted connections by process; Filtering Platform fields (filter run-time ID, layer) are not present |
| CrowdStrike Falcon sensor telemetry (FDR event_simpleName) | NetworkReceiveAcceptIP6 | Partial | our analysis: sensor network events cover permitted connections by process; Filtering Platform fields (filter run-time ID, layer) are not present |