{'created': '2019-12-13T16:46:18.927Z',
 'created_by_ref': 'identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5',
 'description': 'Adversaries may backdoor web servers with web shells to '
                'establish persistent access to systems. A Web shell is a Web '
                'script that is placed on an openly accessible Web server to '
                'allow an adversary to access the Web server as a gateway into '
                'a network. A Web shell may provide a set of functions to '
                'execute or a command-line interface on the system that hosts '
                'the Web server.(Citation: volexity_0day_sophos_FW)\n'
                '\n'
                'In addition to a server-side script, a Web shell may have a '
                'client interface program that is used to talk to the Web '
                'server (e.g. [China '
                'Chopper](https://attack.mitre.org/software/S0020) Web shell '
                'client).(Citation: Lee 2013)',
 'external_references': [{'external_id': 'T1505.003',
                          'source_name': 'mitre-attack',
                          'url': 'https://attack.mitre.org/techniques/T1505/003'},
                         {'description': ' NSA Cybersecurity Directorate. '
                                         '(n.d.). Mitigating Web Shells. '
                                         'Retrieved July 22, 2021.',
                          'source_name': 'NSA Cyber Mitigating Web Shells',
                          'url': 'https://github.com/nsacyber/Mitigating-Web-Shells'},
                         {'description': 'Adair, S., Lancaster, T., Volexity '
                                         'Threat Research. (2022, June 15). '
                                         'DriftingCloud: Zero-Day Sophos '
                                         'Firewall Exploitation and an '
                                         'Insidious Breach. Retrieved July 1, '
                                         '2022.',
                          'source_name': 'volexity_0day_sophos_FW',
                          'url': 'https://www.volexity.com/blog/2022/06/15/driftingcloud-zero-day-sophos-firewall-exploitation-and-an-insidious-breach/'},
                         {'description': 'Lee, T., Hanzlik, D., Ahl, I. (2013, '
                                         'August 7). Breaking Down the China '
                                         'Chopper Web Shell - Part I. '
                                         'Retrieved March 27, 2015.',
                          'source_name': 'Lee 2013',
                          'url': 'https://www.fireeye.com/blog/threat-research/2013/08/breaking-down-the-china-chopper-web-shell-part-i.html'},
                         {'description': 'US-CERT. (2015, November 13). '
                                         'Compromised Web Servers and Web '
                                         'Shells - Threat Awareness and '
                                         'Guidance. Retrieved June 8, 2016.',
                          'source_name': 'US-CERT Alert TA15-314A Web Shells',
                          'url': 'https://www.us-cert.gov/ncas/alerts/TA15-314A'}],
 'id': 'attack-pattern--5d0d3609-d06d-49e1-b9c9-b544e0c618cb',
 'kill_chain_phases': [{'kill_chain_name': 'mitre-attack',
                        'phase_name': 'persistence'}],
 'modified': '2025-10-24T17:48:50.387Z',
 'name': 'Web Shell',
 '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_contributors': ['Arnim Rupp, Deutsche Lufthansa AG'],
 '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', 'macOS', 'Network Devices', 'Windows'],
 'x_mitre_version': '1.5'}

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