TCP Port 133 – statsrv

About TCP Port 133

The Internet Assigned Numbers Authority (IANA) registers port 133 for statsrv. The IANA description reads: ‘Statistics 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 133. Presence in IDS rules does not mean traffic on this port is malicious. These are patterns security tools monitor.

Rule categories (top 1): trojan-activity (1).

Sample rule descriptions for TCP port 133:

• MALWARE-BACKDOOR Win.Trojan.Wiper inbound communication attempt

Malware Activity

Some malware indicators are observed on this port.

1 of 1 IDS rule for TCP port 133 involve malware activity.

Families observed (top 1): Wiper (1).

Data Sources

This information is compiled from: IANA Service Name and Transport Protocol Port Number Registry, Snort Community Rules (GPLv2), and MITRE ATT&CK (Apache 2.0).