TCP Port 6670 – vocaltec-gold

About TCP Port 6670

The Internet Assigned Numbers Authority (IANA) registers port 6670 for vocaltec-gold. The IANA description reads: ‘Vocaltec Global Online Directory’. This port is referenced in 12 IDS rules and exhibits moderate malware activity in monitored traffic.

IDS Rule References

12 IDS / security rules reference TCP port 6670. Presence in IDS rules does not mean traffic on this port is malicious. These are patterns security tools monitor.

Rule categories (top 5): policy-violation (7), trojan-activity (2), command-and-control (1), attempted-user (1), misc-attack (1).

Sample rule descriptions for TCP port 6670:

• SERVER-OTHER CHAT IRC topic overflow
• POLICY-SOCIAL IRC nick change
• SERVER-OTHER CHAT IRC Ettercap parse overflow attempt
• POLICY-SOCIAL IRC message
• POLICY-SOCIAL IRC DCC file transfer request

Malware Activity

A meaningful share of monitored traffic on this port involves malware indicators.

3 of 12 IDS rules for TCP port 6670 involve malware activity.

Families observed (top 2): MAGICHOUND.MPK (1), Siloscape (1).

Data Sources

This information is compiled from: IANA Service Name and Transport Protocol Port Number Registry, Emerging Threats Open Ruleset (BSD 2-Clause / GPLv2 per SID range), Snort Community Rules (GPLv2), and MITRE ATT&CK (Apache 2.0).