TCP Port 5721 – dtpt

About TCP Port 5721

Port 5721 is registered with the Internet Assigned Numbers Authority (IANA) for dtpt. The IANA description reads: ‘Desktop Passthru Service’. This port is referenced in 1 IDS rule and exhibits low malware activity in monitored traffic.

IDS Rule References

1 IDS / security rule reference TCP port 5721. Presence in IDS rules does not mean traffic on this port is malicious. These are patterns security tools monitor.

Rule categories (top 1): command-and-control (1).

Sample rule descriptions for TCP port 5721:

• ET MALWARE Backdoor family PCRat/Gh0st CnC traffic

Malware Activity

Some malware indicators are observed on this port.

1 of 1 IDS rule for TCP port 5721 involve malware activity.

Families observed (top 2): Gh0st (1), PCRAT (1).

Data Sources

This information is compiled from: IANA Service Name and Transport Protocol Port Number Registry and Emerging Threats Open Ruleset (BSD 2-Clause / GPLv2 per SID range).