{ "type": "bundle", "id": "bundle--72b54946-3c9d-479e-8d3d-56dac8ab37dd", "spec_version": "2.0", "objects": [ { "x_mitre_platforms": [ "Android", "iOS" ], "x_mitre_domains": [ "mobile-attack" ], "object_marking_refs": [ "marking-definition--fa42a846-8d90-4e51-bc29-71d5b4802168" ], "type": "attack-pattern", "id": "attack-pattern--3911658a-6506-4deb-9ab4-595a51ae71ad", "created": "2017-10-25T14:48:16.650Z", "x_mitre_version": "1.0", "external_references": [ { "source_name": "mitre-attack", "external_id": "T1436", "url": "https://attack.mitre.org/techniques/T1436" } ], "x_mitre_deprecated": true, "revoked": false, "description": "Adversaries may communicate over a commonly used port to bypass firewalls or network detection systems and to blend with normal network activity to avoid more detailed inspection. \n\nThey may use commonly open ports such as\n\n* TCP:80 (HTTP)\n* TCP:443 (HTTPS)\n* TCP:25 (SMTP)\n* TCP/UDP:53 (DNS)\n\nThey may use the protocol associated with the port or a completely different protocol.", "modified": "2022-04-06T15:40:47.556Z", "created_by_ref": "identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5", "name": "Commonly Used Port", "x_mitre_detection": "", "kill_chain_phases": [ { "kill_chain_name": "mitre-mobile-attack", "phase_name": "command-and-control" }, { "kill_chain_name": "mitre-mobile-attack", "phase_name": "exfiltration" } ], "x_mitre_is_subtechnique": false, "x_mitre_tactic_type": [ "Post-Adversary Device Access" ], "x_mitre_attack_spec_version": "2.1.0", "x_mitre_modified_by_ref": "identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5" } ] }