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RTT· red team

RTT · red team

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Techniques›Persistence›Malicious Office Add-in (Word)

Persistence

Malicious Office Add-in (Word)

T1137.006 · MITRE ATT&CK

Word Office.js add-ins use HTML, CSS, JavaScript, and the Word JavaScript API and run in an Office add-in runtime separate from Word; in supported web clients, the add-in is hosted in a sandboxed iframe. ATT&CK T1137.006 covers startup-loaded add-ins across Office products, including Word/Excel WLL/XLL libraries and VBA, COM, automation, VBE, and VSTO add-ins. A Word add-in configured for automatic loading can provide persistence. Treat Office.js activation as a separate path because its web runtime does not establish classic add-in startup loading behavior.

ArtifactsRESTRICTED_ACCESS_BLUR_MARKER

EDR HooksRESTRICTED_ACCESS_BLUR_MARKER

Steps1

CategoryOffice Add-In Abuse

Discuss in Advisor

Walkthrough

Step 1

RESTRICTED_ACCESS_BLUR_MARKER

RESTRICTED_ACCESS_BLUR_MARKER

Requirements: ALL(RESTRICTED_ACCESS_BLUR_MARKER)

Variant:

Full outcome coverage

reg.exe · Save SYSTEM Registry Hive for Offline Analysis

Save SYSTEM Registry Hive for Offline Analysis

powershell

RESTRICTED_ACCESS_BLUR_MARKER

Version: RESTRICTED_ACCESS_BLUR_MARKER. Requirements: ALL(RESTRICTED_ACCESS_BLUR_MARKER)Documents all requested outcomes. This is a candidate, not proof of execution or compatibility.Shell: RESTRICTED_ACCESS_BLUR_MARKER. Privileges: RESTRICTED_ACCESS_BLUR_MARKER.preconditions: RESTRICTED_ACCESS_BLUR_MARKERverification: RESTRICTED_ACCESS_BLUR_MARKERfailure modes: RESTRICTED_ACCESS_BLUR_MARKERlimitations: RESTRICTED_ACCESS_BLUR_MARKERcleanup: RESTRICTED_ACCESS_BLUR_MARKER

RESTRICTED_ACCESS_BLUR_MARKER

Detection signal

Detection 01

RESTRICTED_ACCESS_BLUR_MARKER

Mitigations

Mitigation 01

RESTRICTED_ACCESS_BLUR_MARKER

OPSEC notes

RESTRICTED_ACCESS_BLUR_MARKER

References

Extended details

RESTRICTED_ACCESS_BLUR_MARKER