{'created': '2018-01-16T16:13:52.465Z',
 'created_by_ref': 'identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5',
 'description': 'Windows password filters are password policy enforcement '
                'mechanisms for both domain and local accounts. Filters are '
                'implemented as dynamic link libraries (DLLs) containing a '
                'method to validate potential passwords against password '
                'policies. Filter DLLs can be positioned on local computers '
                'for local accounts and/or domain controllers for domain '
                'accounts.\n'
                '\n'
                'Before registering new passwords in the Security Accounts '
                'Manager (SAM), the Local Security Authority (LSA) requests '
                'validation from each registered filter. Any potential changes '
                'cannot take effect until every registered filter acknowledges '
                'validation.\n'
                '\n'
                'Adversaries can register malicious password filters to '
                'harvest credentials from local computers and/or entire '
                'domains. To perform proper validation, filters must receive '
                'plain-text credentials from the LSA. A malicious password '
                'filter would receive these plain-text credentials every time '
                'a password request is made. (Citation: Carnal Ownage Password '
                'Filters Sept 2013)',
 'external_references': [{'external_id': 'T1174',
                          'source_name': 'mitre-attack',
                          'url': 'https://attack.mitre.org/techniques/T1174'},
                         {'description': 'Fuller, R. (2013, September 11). '
                                         'Stealing passwords every time they '
                                         'change. Retrieved November 21, 2017.',
                          'source_name': 'Carnal Ownage Password Filters Sept '
                                         '2013',
                          'url': 'http://carnal0wnage.attackresearch.com/2013/09/stealing-passwords-every-time-they.html'},
                         {'description': 'Bialek, J. (2013, September 15). '
                                         'Intercepting Password Changes With '
                                         'Function Hooking. Retrieved November '
                                         '21, 2017.',
                          'source_name': 'Clymb3r Function Hook Passwords Sept '
                                         '2013',
                          'url': 'https://clymb3r.wordpress.com/2013/09/15/intercepting-password-changes-with-function-hooking/'}],
 'id': 'attack-pattern--b8c5c9dd-a662-479d-9428-ae745872537c',
 'kill_chain_phases': [{'kill_chain_name': 'mitre-attack',
                        'phase_name': 'credential-access'}],
 'modified': '2025-10-24T17:49:17.124Z',
 'name': 'Password Filter DLL',
 'object_marking_refs': ['marking-definition--fa42a846-8d90-4e51-bc29-71d5b4802168'],
 'revoked': True,
 'spec_version': '2.1',
 'type': 'attack-pattern',
 'x_mitre_attack_spec_version': '3.2.0',
 'x_mitre_contributors': ['Vincent Le Toux'],
 'x_mitre_deprecated': False,
 'x_mitre_detection': '',
 'x_mitre_domains': ['enterprise-attack'],
 'x_mitre_is_subtechnique': False,
 'x_mitre_modified_by_ref': 'identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5',
 'x_mitre_platforms': ['Windows'],
 'x_mitre_version': '1.1'}