Suspicious Remote Connection to ADWS Port 9389 via security

ATT&CK techniques

Discovery

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
- T1018Remote System Discovery
- T1087.002Domain Account
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects Windows Filtering Platform event 5156 recording an allowed inbound connection to TCP port 9389, the Active Directory Web Services port. Correlating the real source address from event 5156 exposes remote ADWS enumeration that would otherwise appear as localhost in Directory Service logs, so non-loopback connections to 9389 indicate potential SOAPHound style directory collection.

Reporting behind it

Related detections9 linkedT1087.002 — drag to rearrange

Suspicious AdFind Active Directory Reconnaissance Tool Execution (via process_creation)

Suspicious Active Directory Enumeration via ADWS PowerShell Cmdlets via ps_script

Windows Process Creation: Renamed AdFind.exe Executions

PowerShell: Active Directory computer enumeration via Get-AdComputer

Windows Process Creation: AdFind Executed with Suspicious Recon Flags

Windows Process Creation: Execution of Net.exe or Net1.exe

Malicious Active Directory Enumeration via SharpHound or BloodHound (via process_creation)

Suspicious Group Discovery - Command (via process_creation)

SharpHound Host Enumeration Over Kerberos (via security)

Suspicious Remote Connection to ADWS Port 9389 via security

Pivot detection · T1087.002 · 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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