{'created': '2017-12-14T16:46:06.044Z',
 'created_by_ref': 'identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5',
 'description': 'In OS X prior to El Capitan, users with root access can read '
                'plaintext keychain passwords of logged-in users because '
                'Apple’s keychain implementation allows these credentials to '
                'be cached so that users are not repeatedly prompted for '
                'passwords. (Citation: OS X Keychain) (Citation: External to '
                'DA, the OS X Way) Apple’s securityd utility takes the user’s '
                'logon password, encrypts it with PBKDF2, and stores this '
                'master key in memory. Apple also uses a set of keys and '
                'algorithms to encrypt the user’s password, but once the '
                'master key is found, an attacker need only iterate over the '
                'other values to unlock the final password. (Citation: OS X '
                'Keychain)\n'
                '\n'
                'If an adversary can obtain root access (allowing them to read '
                'securityd’s memory), then they can scan through memory to '
                'find the correct sequence of keys in relatively few tries to '
                'decrypt the user’s logon keychain. This provides the '
                'adversary with all the plaintext passwords for users, WiFi, '
                'mail, browsers, certificates, secure notes, etc. (Citation: '
                'OS X Keychain) (Citation: OSX Keydnap malware)',
 'external_references': [{'external_id': 'T1167',
                          'source_name': 'mitre-attack',
                          'url': 'https://attack.mitre.org/techniques/T1167'},
                         {'description': 'Juuso Salonen. (2012, September 5). '
                                         'Breaking into the OS X keychain. '
                                         'Retrieved July 15, 2017.',
                          'source_name': 'OS X Keychain',
                          'url': 'http://juusosalonen.com/post/30923743427/breaking-into-the-os-x-keychain'},
                         {'description': 'Alex Rymdeko-Harvey, Steve Borosh. '
                                         '(2016, May 14). External to DA, the '
                                         'OS X Way. Retrieved July 3, 2017.',
                          'source_name': 'External to DA, the OS X Way',
                          'url': 'http://www.slideshare.net/StephanBorosh/external-to-da-the-os-x-way'},
                         {'description': 'Marc-Etienne M.Leveille. (2016, July '
                                         '6). New OSX/Keydnap malware is '
                                         'hungry for credentials. Retrieved '
                                         'July 3, 2017.',
                          'source_name': 'OSX Keydnap malware',
                          'url': 'https://www.welivesecurity.com/2016/07/06/new-osxkeydnap-malware-hungry-credentials/'}],
 'id': 'attack-pattern--2715c335-1bf2-4efe-9f18-0691317ff83b',
 'kill_chain_phases': [{'kill_chain_name': 'mitre-attack',
                        'phase_name': 'credential-access'}],
 'modified': '2025-10-24T17:48:32.601Z',
 'name': 'Securityd Memory',
 '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_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': ['macOS'],
 'x_mitre_version': '1.1'}