TCP Port 3323

About TCP Port 3323

Port 3323 sits outside of IANA’s formally registered assignments. Ports in this numerical range can be assigned by IANA but this specific port has no current registration. It is referenced in 3 IDS rules and exhibits low malware activity indicators. Ports outside formal IANA assignment are commonly used by malware authors and security tooling.

IDS Rule References

3 IDS / security rules reference TCP port 3323. Presence in IDS rules does not mean traffic on this port is malicious. These are patterns security tools monitor.

Rule categories (top 1): attempted-admin (3).

Sample rule descriptions for TCP port 3323:

• ET TELNET busybox MIRAI hackers – Possible Brute Force Attack
• ET TELNET busybox ECCHI hackers – Possible Brute Force Attack
• ET TELNET busybox MEMES Hackers – Possible Brute Force Attack

Malware Activity

Some malware indicators are observed on this port.

1 of 3 IDS rules for TCP port 3323 involve malware activity.

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

Data Sources

This information is compiled from: Emerging Threats Open Ruleset (BSD 2-Clause / GPLv2 per SID range).