MITRE ATT&CK Technique
Description
Adversaries may abuse Microsoft Office add-ins to obtain persistence on a compromised system. Office add-ins can be used to add functionality to Office programs. (Citation: Microsoft Office Add-ins) There are different types of add-ins that can be used by the various Office products; including Word/Excel add-in Libraries (WLL/XLL), VBA add-ins, Office Component Object Model (COM) add-ins, automation add-ins, VBA Editor (VBE), Visual Studio Tools for Office (VSTO) add-ins, and Outlook add-ins. (Citation: MRWLabs Office Persistence Add-ins)(Citation: FireEye Mail CDS 2018) Add-ins can be used to obtain persistence because they can be set to execute code when an Office application starts.
Supported Platforms
Created
April 29, 2026
Last Updated
April 29, 2026
STIX Data
{'created': '2019-11-07T19:52:52.801Z',
'created_by_ref': 'identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5',
'description': 'Adversaries may abuse Microsoft Office add-ins to obtain '
'persistence on a compromised system. Office add-ins can be '
'used to add functionality to Office programs. (Citation: '
'Microsoft Office Add-ins) There are different types of '
'add-ins that can be used by the various Office products; '
'including Word/Excel add-in Libraries (WLL/XLL), VBA add-ins, '
'Office Component Object Model (COM) add-ins, automation '
'add-ins, VBA Editor (VBE), Visual Studio Tools for Office '
'(VSTO) add-ins, and Outlook add-ins. (Citation: MRWLabs '
'Office Persistence Add-ins)(Citation: FireEye Mail CDS 2018)\n'
'\n'
'Add-ins can be used to obtain persistence because they can be '
'set to execute code when an Office application starts. ',
'external_references': [{'external_id': 'T1137.006',
'source_name': 'mitre-attack',
'url': 'https://attack.mitre.org/techniques/T1137/006'},
{'description': 'Caban, D. and Hirani, M. (2018, '
'October 3). You’ve Got Mail! '
'Enterprise Email Compromise. '
'Retrieved November 17, 2024.',
'source_name': 'FireEye Mail CDS 2018',
'url': 'https://web.archive.org/web/20190508170121/https://summit.fireeye.com/content/dam/fireeye-www/summit/cds-2018/presentations/cds18-technical-s03-youve-got-mail.pdf'},
{'description': 'Knowles, W. (2017, April 21). Add-In '
'Opportunities for Office '
'Persistence. Retrieved November 17, '
'2024.',
'source_name': 'MRWLabs Office Persistence Add-ins',
'url': 'https://web.archive.org/web/20190526112859/https://labs.mwrinfosecurity.com/blog/add-in-opportunities-for-office-persistence/'},
{'description': 'Microsoft. (n.d.). Add or remove '
'add-ins. Retrieved July 3, 2017.',
'source_name': 'Microsoft Office Add-ins',
'url': 'https://support.office.com/article/Add-or-remove-add-ins-0af570c4-5cf3-4fa9-9b88-403625a0b460'},
{'description': 'Shukrun, S. (2019, June 2). Office '
'Templates and GlobalDotName - A '
'Stealthy Office Persistence '
'Technique. Retrieved August 26, '
'2019.',
'source_name': 'GlobalDotName Jun 2019',
'url': 'https://www.221bluestreet.com/post/office-templates-and-globaldotname-a-stealthy-office-persistence-technique'}],
'id': 'attack-pattern--34f1d81d-fe88-4f97-bd3b-a3164536255d',
'kill_chain_phases': [{'kill_chain_name': 'mitre-attack',
'phase_name': 'persistence'}],
'modified': '2025-10-24T17:48:37.911Z',
'name': 'Add-ins',
'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_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', 'Office Suite'],
'x_mitre_version': '1.2'}