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Antivirus Bypass Techniques

You're reading from   Antivirus Bypass Techniques Learn practical techniques and tactics to combat, bypass, and evade antivirus software

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Product type Paperback
Published in Jul 2021
Publisher Packt
ISBN-13 9781801079747
Length 242 pages
Edition 1st Edition
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Authors (2):
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Uriel Kosayev Uriel Kosayev
Author Profile Icon Uriel Kosayev
Uriel Kosayev
Nir Yehoshua Nir Yehoshua
Author Profile Icon Nir Yehoshua
Nir Yehoshua
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Toc

Table of Contents (13) Chapters Close

Preface 1. Section 1: Know the Antivirus – the Basics Behind Your Security Solution
2. Chapter 1: Introduction to the Security Landscape FREE CHAPTER 3. Chapter 2: Before Research Begins 4. Chapter 3: Antivirus Research Approaches 5. Section 2: Bypass the Antivirus – Practical Techniques to Evade Antivirus Software
6. Chapter 4: Bypassing the Dynamic Engine 7. Chapter 5: Bypassing the Static Engine 8. Chapter 6: Other Antivirus Bypass Techniques 9. Section 3: Using Bypass Techniques in the Real World
10. Chapter 7: Antivirus Bypass Techniques in Red Team Operations 11. Chapter 8: Best Practices and Recommendations 12. Other Books You May Enjoy

Antivirus bypass using packing

Packers are programs that are used most of the time to compress code in binary files (mostly EXE files). While these programs are not, in themselves, harmful and can in fact be used for a variety of useful purposes, malware authors tend to use packers to hide their code's intentions, making malware research more difficult and potentially aiding their code in thwarting static antivirus engines. This section of the book will present the major differences between regular and packed executables, explore how to detect packers, and explain how to defeat them. Central to this task is understanding the importance and maintenance of unpacking engines used by various types of antivirus software.

How packers work

To explain how packers work, we will run a simple "Hello World.exe" file through two different packers, Ultimate Packer for eXecutables (UPX) and ASPack, each of which uses a different packing technique.

In general, packers work...

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