Adversaries may communicate using a protocol and port pairing that are typically not associated. For example, HTTPS over port 8088(Citation: Symantec Elfin Mar 2019) or port 587(Citation: Fortinet Agent Tesla April 2018) as opposed to the traditional port 443. Adversaries may make changes to the standard port used by a protocol to bypass filtering or muddle analysis/parsing of network data.
Adversaries may also make changes to victim systems to abuse non-standard ports. For example, Registry keys and other configuration settings can be used to modify protocol and port pairings.(Citation: change_rdp_port_conti)
View in MITRE ATT&CK®| Capability ID | Capability Description | Mapping Type | ATT&CK ID | ATT&CK Name | Notes |
|---|---|---|---|---|---|
| action.hacking.vector.Other network service | Network service that is not remote access or a web application. | related-to | T1571 | Non-Standard Port | |
| action.malware.variety.Backdoor or C2 | Malware creates a remote control capability, but it's unclear if it's a backdoor for hacking or C2 for malware. Parent of 'C2' and 'Backdoor'. | related-to | T1571 | Non-Standard Port | |
| action.malware.variety.C2 | Malware creates Command and Control capability for malware. Child of 'Backdoor or C2'. | related-to | T1571 | Non-Standard Port |
| Capability ID | Capability Description | Mapping Type | ATT&CK ID | ATT&CK Name | Notes |
|---|---|---|---|---|---|
| cloud_ngfw | Cloud Next-Generation Firewall (NGFW)_ | technique_scores | T1571 | Non-Standard Port |
Comments
Cloud NGFW can allow or deny traffic based on the traffic's protocol, destination ports, sources, and destinations. This functionality can be used to restrict which protocols and port numbers are allowed through the firewall and prevent adversaries from using non-standard ports. As a result, this mapping is given a score of Significant.
References
|