Template Injection T1221
Tactic: Stealth
Adversaries may create or modify references in user document templates to conceal malicious code or force authentication attempts. For example, Microsoft’s Office Open XML (OOXML) specification defines an XML-based format for Office documents (.docx, xlsx, .pptx) to replace older binary formats (.doc, .xls, .ppt). OOXML files are packed together ZIP archives compromised of various XML files, referred to as parts, containing properties that collectively define how a document is rendered.
Events covered
1 catalog event is tagged with this technique by at least one rule.
| Provider | Event | Title |
|---|---|---|
| Sysmon | Event ID 13 | RegistryEvent (Value Set) |
Authoring guide
These 2 rules share fields, values, and exclusions.
Fields filtered most (3 distinct)
These fields appear most often in rule filters.
Top indicator values (3 distinct)
These values appear most often in rule predicates.
Exclusions (1 distinct)
These values appear most often in top-level exclusions.
Rules under this technique
These vendors publish rules tagged with this technique.