{'created': '2020-10-05T13:24:49.780Z',
 'created_by_ref': 'identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5',
 'description': 'Adversaries may abuse print processors to run malicious DLLs '
                'during system boot for persistence and/or privilege '
                'escalation. Print processors are DLLs that are loaded by the '
                'print spooler service, `spoolsv.exe`, during boot.(Citation: '
                'Microsoft Intro Print Processors)\n'
                '\n'
                'Adversaries may abuse the print spooler service by adding '
                'print processors that load malicious DLLs at startup. A print '
                'processor can be installed through the '
                '<code>AddPrintProcessor</code> API call with an account that '
                'has <code>SeLoadDriverPrivilege</code> enabled. '
                'Alternatively, a print processor can be registered to the '
                'print spooler service by adding the '
                '<code>HKLM\\SYSTEM\\\\[CurrentControlSet or '
                'ControlSet001]\\Control\\Print\\Environments\\\\[Windows '
                'architecture: e.g., Windows x64]\\Print Processors\\\\[user '
                'defined]\\Driver</code> Registry key that points to the DLL.\n'
                '\n'
                'For the malicious print processor to be correctly installed, '
                'the payload must be located in the dedicated system '
                'print-processor directory, that can be found with the '
                '<code>GetPrintProcessorDirectory</code> API call, or '
                'referenced via a relative path from this directory.(Citation: '
                'Microsoft AddPrintProcessor May 2018) After the print '
                'processors are installed, the print spooler service, which '
                'starts during boot, must be restarted in order for them to '
                'run.(Citation: ESET PipeMon May 2020)\n'
                '\n'
                'The print spooler service runs under SYSTEM level '
                'permissions, therefore print processors installed by an '
                'adversary may run under elevated privileges.',
 'external_references': [{'external_id': 'T1547.012',
                          'source_name': 'mitre-attack',
                          'url': 'https://attack.mitre.org/techniques/T1547/012'},
                         {'description': 'Microsoft. (2018, May 31). '
                                         'AddPrintProcessor function. '
                                         'Retrieved October 5, 2020.',
                          'source_name': 'Microsoft AddPrintProcessor May 2018',
                          'url': 'https://docs.microsoft.com/en-us/windows/win32/printdocs/addprintprocessor'},
                         {'description': 'Microsoft. (2023, June 26). '
                                         'Introduction to print processors. '
                                         'Retrieved September 27, 2023.',
                          'source_name': 'Microsoft Intro Print Processors',
                          'url': 'https://learn.microsoft.com/windows-hardware/drivers/print/introduction-to-print-processors'},
                         {'description': 'Tartare, M. et al. (2020, May 21). '
                                         'No “Game over” for the Winnti Group. '
                                         'Retrieved August 24, 2020.',
                          'source_name': 'ESET PipeMon May 2020',
                          'url': 'https://www.welivesecurity.com/2020/05/21/no-game-over-winnti-group/'}],
 'id': 'attack-pattern--2de47683-f398-448f-b947-9abcc3e32fad',
 'kill_chain_phases': [{'kill_chain_name': 'mitre-attack',
                        'phase_name': 'persistence'},
                       {'kill_chain_name': 'mitre-attack',
                        'phase_name': 'privilege-escalation'}],
 'modified': '2025-10-24T17:48:35.261Z',
 'name': 'Print Processors',
 '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': ['Mathieu Tartare, ESET', 'Tahseen Bin Taj'],
 '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': ['Windows'],
 'x_mitre_version': '1.2'}