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Malicious Web & Document Files
LearnREMAUnit 46

Topic 4.6 of Malicious Web & Document Files

Microsoft Office Macro Malware

VBA macro infection chains, format identification by magic bytes, oleid and olevba triage, P-Code hidden execution, Excel 4.0 XLM macros, DDEAUTO, remote template injection, malicious OneNote files, and a nine-step triage workflow.

~30 min total·4 quadrants of structured content

By the end of this topic, you will

  • Identify Office document formats by magic bytes rather than file extension
  • Interpret olevba output to identify auto-execution triggers and suspicious API calls
  • Explain what P-Code is and why stripping visible VBA source is insufficient
  • Describe how Excel 4.0 XLM macros evade VBA-focused security tools
  • Detect DDEAUTO command execution in a Word document without enabling macros
  • Detect remote template injection by inspecting word/_rels/settings.xml.rels
  • Apply the nine-step Office malware triage workflow to an unknown sample
Q1 · E-TUTORIAL (1)Q2 · E-CONTENT (1)Q3 · WEB RESOURCES (7)Q4 · SELF-ASSESSMENT (2)

Quadrant 1 · e-Tutorial

Video lectures and walkthroughs

Quadrant 2 · e-Content

Articles and case studies

Education

Microsoft Office Macro Malware

VBA macro infection chains, document format identification, olevba analysis, P-Code, Excel 4.0 XLM macros, DDEAUTO, remote template injection, and malicious OneNote files — with a complete triage workflow.

18 min read

Quadrant 3 · Web Resources

Downloadable material and curated external links

Downloadable reference material

EBook

REMA eBook 2026

v1.0

Open resource

Cheatsheet

REMA Cheatsheet 2026

v1.0

Open resource

MCQ Bank

REMA MCQ Bank 2026

v1.0

Open resource

Question Bank

REMA Question Bank 2026

v1.0

Open resource

External links

oletools — oleid, olevba, rtfobj Suite

Complete Office malware analysis toolkit. Install via pip. Covers VBA extraction, OLE analysis, and RTF object extraction.

XLMMacroDeobfuscator — Excel 4.0 Macro Analyser

Parses and emulates Excel 4.0 XLM macros. Essential for analysing samples that evade VBA-focused tools.

MITRE ATT&CK — Phishing: Spearphishing Attachment (T1566.001)

ATT&CK technique for malicious document delivery via email with procedure examples and detection guidance.

Quadrant 4 · Self-Assessment

Test your knowledge — earn a certificate on first pass

Malicious Web & Document Files

Covers drive-by download attacks, JavaScript de-obfuscation, malicious PDF analysis, RTF exploitation, and Microsoft Office macro malware.

20 questions30 minPass: 60%

REMA Complete Assessment

A comprehensive 120-question assessment covering the entire Reverse Engineering and Malware Analysis curriculum: malware taxonomy and reverse engineering fundamentals, static and dynamic analysis, reversing malicious code, malicious web and document files, in-depth analysis of packed and fileless malware, and self-defending malware techniques.

120 questions90 minPass: 60%