{'created': '2020-03-14T23:08:20.244Z',
 'created_by_ref': 'identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5',
 'description': 'Adversaries may use an internal proxy to direct command and '
                'control traffic between two or more systems in a compromised '
                'environment. Many tools exist that enable traffic redirection '
                'through proxies or port redirection, including '
                '[HTRAN](https://attack.mitre.org/software/S0040), ZXProxy, '
                'and ZXPortMap. (Citation: Trend Micro APT Attack Tools) '
                'Adversaries use internal proxies to manage command and '
                'control communications inside a compromised environment, to '
                'reduce the number of simultaneous outbound network '
                'connections, to provide resiliency in the face of connection '
                'loss, or to ride over existing trusted communications paths '
                'between infected systems to avoid suspicion. Internal proxy '
                'connections may use common peer-to-peer (p2p) networking '
                'protocols, such as SMB, to better blend in with the '
                'environment.\n'
                '\n'
                'By using a compromised internal system as a proxy, '
                'adversaries may conceal the true destination of C2 traffic '
                'while reducing the need for numerous connections to external '
                'systems.',
 'external_references': [{'external_id': 'T1090.001',
                          'source_name': 'mitre-attack',
                          'url': 'https://attack.mitre.org/techniques/T1090/001'},
                         {'description': 'Gardiner, J.,  Cova, M., Nagaraja, '
                                         'S. (2014, February). Command & '
                                         'Control Understanding, Denying and '
                                         'Detecting. Retrieved April 20, 2016.',
                          'source_name': 'University of Birmingham C2',
                          'url': 'https://arxiv.org/ftp/arxiv/papers/1408/1408.1136.pdf'},
                         {'description': 'Wilhoit, K. (2013, March 4). '
                                         'In-Depth Look: APT Attack Tools of '
                                         'the Trade. Retrieved December 2, '
                                         '2015.',
                          'source_name': 'Trend Micro APT Attack Tools',
                          'url': 'http://blog.trendmicro.com/trendlabs-security-intelligence/in-depth-look-apt-attack-tools-of-the-trade/'}],
 'id': 'attack-pattern--f6dacc85-b37d-458e-b58d-74fc4bbf5755',
 'kill_chain_phases': [{'kill_chain_name': 'mitre-attack',
                        'phase_name': 'command-and-control'}],
 'modified': '2025-10-24T17:49:37.574Z',
 'name': 'Internal Proxy',
 'object_marking_refs': ['marking-definition--fa42a846-8d90-4e51-bc29-71d5b4802168'],
 'revoked': False,
 'spec_version': '2.1',
 'type': 'attack-pattern',
 'x_mitre_attack_spec_version': '3.2.0',
 'x_mitre_deprecated': False,
 'x_mitre_detection': '',
 'x_mitre_domains': ['enterprise-attack'],
 'x_mitre_is_subtechnique': True,
 'x_mitre_modified_by_ref': 'identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5',
 'x_mitre_platforms': ['Linux', 'Network Devices', 'Windows', 'macOS', 'ESXi'],
 'x_mitre_version': '1.2'}

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