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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

The preparation

Unlike when searching for vulnerabilities and exploiting them, bypass techniques do not mainly deal with antivirus engine vulnerability research. Instead, they deal more with writing malware that contains a number of bypass techniques and then test the malware containing these techniques against the antivirus engines we seek to bypass.

For example, if we want to find a particular vulnerability in an antivirus engine, we need to the following:

  1. We need to gather research leads. Then, for each lead, we will have to determine what the lead does, when it starts running, whether it is a service, whether it starts running when we scan a file, and whether it is a DLL injected into all processes, along with many further questions to help guide our research.
  2. After that, we need to understand which vulnerability we are looking for, and only then can we actually begin researching antivirus software to find the vulnerability.
  3. To use a bypass technique, we first...
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