PowerShell

TCP

Remote Access High Risk

Custom backdoor — commonly used by pentesters and malware

🔍 How to Scan Port 13337

nmap -sV -p 13337 target

nmap -sV -sC --script=banner -p 13337 target

nc -zv target 13337

Scan port 13337 with nmap -sV to identify the exact service and version
If PowerShell is not needed, close or firewall this port immediately
Check for default credentials if a management interface runs on this port
Use searchsploit powershell to find known exploits
Monitor traffic on port 13337 with Wireshark or tcpdump for anomalies
Ensure the service is patched to the latest version to prevent known CVE exploitation

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