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Course Instructor: Ashish Revar

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Examining Self-Defending Malware
LearnREMAUnit 66

Topic 6.6 of Examining Self-Defending Malware

Advanced Unpacking Defences

Stolen bytes, nanomites, PE header erasure, guard page anti-dumping, the six-step anticipatory unpacking methodology, packer reference table, and Process Doppelgänging and Process Ghosting.

~30 min total·4 quadrants of structured content

By the end of this topic, you will

  • Explain stolen bytes and describe how to manually restore them in a dumped file
  • Describe how nanomites replace conditional jumps and the approach to reconstructing them
  • Explain PE header erasure and two methods to recover a valid header from an erased dump
  • Remove guard page protection in x64dbg before dumping with Scylla
  • Apply the six-step anticipatory unpacking methodology to a Themida-protected sample
  • Distinguish Process Doppelgänging from Process Ghosting based on the NTFS mechanism used
Q1 · E-TUTORIAL (2)Q2 · E-CONTENT (1)Q3 · WEB RESOURCES (8)Q4 · SELF-ASSESSMENT (2)

Quadrant 1 · e-Tutorial

Video lectures and walkthroughs

Quadrant 2 · e-Content

Articles and case studies

Education

Advanced Unpacking Defences

Stolen bytes, nanomites, PE header erasure, guard page anti-dumping, and the anticipatory unpacking methodology — how to reconstruct a fully functional PE when the packer fights every step of the process.

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

Featured Podcast

Podcast Episode

The Art of Deception: Unmasking Anti-Analysis & Evasion Techniques

A technical examination of the self-defence mechanisms used by self-defending malware — how threats detect sandboxes, sabotage debuggers, and hide from automated analysis, and how analysts defeat each technique.

Listen now

External links

REMA eBook 2026 — Chapter 6, Advanced Unpacking

Full stolen bytes diagram, nanomite mechanism, and anticipatory unpacking methodology in the REMA eBook Chapter 6.

hasherezade — PE-sieve: Automated Injection and Packing Detector

Scans running processes for injected code, hollowed modules, and anomalous PE regions. Dumps suspicious regions automatically.

MITRE ATT&CK — Process Doppelgänging (T1055.013)

ATT&CK entry for Process Doppelgänging with detection guidance and real-world examples.

Quadrant 4 · Self-Assessment

Test your knowledge — earn a certificate on first pass

Examining Self-Defending Malware

Covers anti-debugging techniques, virtual machine and sandbox detection, protection of embedded data, code misdirection, and advanced unpacking methodologies.

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%