TCP Port 1000 – cadlock2
About TCP Port 1000
The Internet Assigned Numbers Authority (IANA) registers port 1000 for cadlock2. This port is referenced in 4 IDS rules and exhibits low malware activity in monitored traffic.
IDS Rule References
4 IDS / security rules reference TCP port 1000. Treat that number as context, not a danger score. Many detection rules are written against groups of ports rather than one service, web ports especially, so common web alternate ports inherit large counts while genuinely sensitive services can show few rules or none. Presence in IDS rules does not mean traffic on this port is malicious.
Rule categories (top 2): trojan-activity (3), misc-activity (1).
Sample rule descriptions for TCP port 1000:
- MALWARE-BACKDOOR Infector 1.6 Client to Server Connection Request
- ET MALWARE upStage Residential Proxy CnC Checkin
- ET MALWARE upStage Residential Proxy CnC Response
- ET MALWARE upStage Proxy Heartbeat
Malware Rule References
A small share of the IDS rules that reference this port are malware related.
4 of the 4 IDS rules that reference TCP port 1000 are malware related. That describes detection coverage across the whole internet, not anything about your machine or your network.
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), and Snort Community Rules (GPLv2).