{'created': '2023-03-10T15:37:21.782Z',
 'created_by_ref': 'identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5',
 'description': 'Adversaries may purchase or otherwise acquire an existing '
                'access to a target system or network. A variety of online '
                'services and initial access broker networks are available to '
                'sell access to previously compromised systems.(Citation: '
                'Microsoft Ransomware as a Service)(Citation: CrowdStrike '
                'Access Brokers)(Citation: Krebs Access Brokers Fortune 500) '
                'In some cases, adversary groups may form partnerships to '
                'share compromised systems with each other.(Citation: CISA '
                'Karakurt 2022)\n'
                '\n'
                'Footholds to compromised systems may take a variety of forms, '
                'such as access to planted backdoors (e.g., [Web '
                'Shell](https://attack.mitre.org/techniques/T1505/003)) or '
                'established access via [External Remote '
                'Services](https://attack.mitre.org/techniques/T1133). In some '
                'cases, access brokers will implant compromised systems with a '
                '“load” that can be used to install additional malware for '
                'paying customers.(Citation: Microsoft Ransomware as a '
                'Service)\n'
                '\n'
                'By leveraging existing access broker networks rather than '
                'developing or obtaining their own initial access '
                'capabilities, an adversary can potentially reduce the '
                'resources required to gain a foothold on a target network and '
                'focus their efforts on later stages of compromise. '
                'Adversaries may prioritize acquiring access to systems that '
                'have been determined to lack security monitoring or that have '
                'high privileges, or systems that belong to organizations in a '
                'particular sector.(Citation: Microsoft Ransomware as a '
                'Service)(Citation: CrowdStrike Access Brokers)\n'
                '\n'
                'In some cases, purchasing access to an organization in '
                'sectors such as IT contracting, software development, or '
                'telecommunications may allow an adversary to compromise '
                'additional victims via a [Trusted '
                'Relationship](https://attack.mitre.org/techniques/T1199), '
                '[Multi-Factor Authentication '
                'Interception](https://attack.mitre.org/techniques/T1111), or '
                'even [Supply Chain '
                'Compromise](https://attack.mitre.org/techniques/T1195).\n'
                '\n'
                '**Note:** while this technique is distinct from other '
                'behaviors such as [Purchase Technical '
                'Data](https://attack.mitre.org/techniques/T1597/002) and '
                '[Credentials](https://attack.mitre.org/techniques/T1589/001), '
                'they may often be used in conjunction (especially where the '
                'acquired foothold requires [Valid '
                'Accounts](https://attack.mitre.org/techniques/T1078)).',
 'external_references': [{'external_id': 'T1650',
                          'source_name': 'mitre-attack',
                          'url': 'https://attack.mitre.org/techniques/T1650'},
                         {'description': 'Brian Krebs. (2012, October 22). '
                                         'Service Sells Access to Fortune 500 '
                                         'Firms. Retrieved March 10, 2023.',
                          'source_name': 'Krebs Access Brokers Fortune 500',
                          'url': 'https://krebsonsecurity.com/2012/10/service-sells-access-to-fortune-500-firms/'},
                         {'description': 'CrowdStrike Intelligence Team. '
                                         '(2022, February 23). Access Brokers: '
                                         'Who Are the Targets, and What Are '
                                         'They Worth?. Retrieved March 10, '
                                         '2023.',
                          'source_name': 'CrowdStrike Access Brokers',
                          'url': 'https://www.crowdstrike.com/blog/access-brokers-targets-and-worth/'},
                         {'description': 'Cybersecurity Infrastructure and '
                                         'Defense Agency. (2022, June 2). '
                                         'Karakurt Data Extortion Group. '
                                         'Retrieved March 10, 2023.',
                          'source_name': 'CISA Karakurt 2022',
                          'url': 'https://www.cisa.gov/news-events/cybersecurity-advisories/aa22-152a'},
                         {'description': 'Microsoft. (2022, May 9). Ransomware '
                                         'as a service: Understanding the '
                                         'cybercrime gig economy and how to '
                                         'protect yourself. Retrieved March '
                                         '10, 2023.',
                          'source_name': 'Microsoft Ransomware as a Service',
                          'url': 'https://www.microsoft.com/en-us/security/blog/2022/05/09/ransomware-as-a-service-understanding-the-cybercrime-gig-economy-and-how-to-protect-yourself/'}],
 'id': 'attack-pattern--d21bb61f-08ad-4dc1-b001-81ca6cb79954',
 'kill_chain_phases': [{'kill_chain_name': 'mitre-attack',
                        'phase_name': 'resource-development'}],
 'modified': '2025-10-24T17:49:25.997Z',
 'name': 'Acquire Access',
 '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': ['Jeremy Kennelly', 'Jeffrey Barto'],
 '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': ['PRE'],
 'x_mitre_version': '1.0'}

---