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Antivirus Bypass Techniques

Antivirus Bypass Techniques

By : Nir Yehoshua, Uriel Kosayev
4.3 (23)
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Antivirus Bypass Techniques

Antivirus Bypass Techniques

4.3 (23)
By: Nir Yehoshua, Uriel Kosayev

Overview of this book

Antivirus software is built to detect, prevent, and remove malware from systems, but this does not guarantee the security of your antivirus solution as certain changes can trick the antivirus and pose a risk for users. This book will help you to gain a basic understanding of antivirus software and take you through a series of antivirus bypass techniques that will enable you to bypass antivirus solutions. The book starts by introducing you to the cybersecurity landscape, focusing on cyber threats, malware, and more. You will learn how to collect leads to research antivirus and explore the two common bypass approaches used by the authors. Once you’ve covered the essentials of antivirus research and bypassing, you'll get hands-on with bypassing antivirus software using obfuscation, encryption, packing, PowerShell, and more. Toward the end, the book covers security improvement recommendations, useful for both antivirus vendors as well as for developers to help strengthen the security and malware detection capabilities of antivirus software. By the end of this security book, you'll have a better understanding of antivirus software and be able to confidently bypass antivirus software.
Table of Contents (13 chapters)
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1
Section 1: Know the Antivirus – the Basics Behind Your Security Solution
5
Section 2: Bypass the Antivirus – Practical Techniques to Evade Antivirus Software
9
Section 3: Using Bypass Techniques in the Real World

Summary

In this chapter of the book, we learned about other antivirus bypass techniques that can be potentially used for bypassing both static and dynamic engines.

The techniques presented in the chapter were binary patching, junk code, PowerShell, and a single malicious functionality.

In the binary patching technique, we learned the basics of reverse engineering x86 Windows-based applications and the timestomping technique that is used to manipulate the timestamp of executable files.

In the junk code technique, we explained the use of if block statements, which will subvert the antivirus detection mechanism.

In the PowerShell technique, we used the PowerShell tool to bypass the antivirus.

And in the single malicious functionality technique, we asked an important question to better understand the antivirus detection engine perspective and answered the question followed by a practical example.

In the next chapter, we will learn about what can we do with the antivirus...

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