TCP Port 5800
About TCP Port 5800
Port 5800 is not assigned to any service in the IANA Service Names and Port Numbers Registry. Ports in this numerical range can be assigned by IANA but this specific port has no current registration. It is referenced in 6 IDS rules and exhibits high malware activity indicators. Ports outside formal IANA assignment are commonly used by malware authors and security tooling.
IDS Rule References
6 IDS / security rules reference TCP port 5800. Presence in IDS rules does not mean traffic on this port is malicious. These are patterns security tools monitor.
Rule categories (top 3): command-and-control (4), attempted-recon (1), misc-activity (1).
Sample rule descriptions for TCP port 5800:
- POLICY-MULTIMEDIA vncviewer Java applet download attempt
- ET SCAN Potential VNC Scan 5800-5820
- ET MALWARE Backdoor family PCRat/Gh0st CnC traffic (OUTBOUND) 5
- ET MALWARE Backdoor family PCRat/Gh0st CnC traffic (OUTBOUND) 6
- ET MALWARE Backdoor family PCRat/Gh0st CnC traffic (OUTBOUND) 21
Malware Activity
Malware activity is frequently observed on this port.
4 of 6 IDS rules for TCP port 5800 involve malware activity.
Families observed (top 3): Gh0st (3), PCRAT (3), PcClient.bal (1).
Data Sources
This information is compiled from: Emerging Threats Open Ruleset (BSD 2-Clause / GPLv2 per SID range) and Snort Community Rules (GPLv2).