Skip to content

Hide Navigation Hide TOC

Add-ins - T1137.006 (34f1d81d-fe88-4f97-bd3b-a3164536255d)

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.

Cluster A Galaxy A Cluster B Galaxy B Level
Add-ins - T1137.006 (34f1d81d-fe88-4f97-bd3b-a3164536255d) Attack Pattern Office Application Startup - T1137 (2c4d4e92-0ccf-4a97-b54c-86d662988a53) Attack Pattern 1