Book Image

Antivirus Bypass Techniques

By : Nir Yehoshua, Uriel Kosayev
Book Image

Antivirus Bypass Techniques

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)
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

Technical requirements

  • Knowledge of the C or C++ programming languages
  • Basic security research knowledge
  • Basic knowledge of processes and threads
  • An understanding of Windows API functions
  • An understanding of YARA
  • An understanding of log-based data such as Windows event logs

Throughout the book, we have presented and based our antivirus bypass techniques on the following two approaches:

  • Vulnerability-based bypass
  • Detection-based bypass

Our main goal in this book is to stop and mitigate these bypass techniques by demonstrating them and offering mitigations for them. In the following section, you will learn how to avoid antivirus bypass that is based on dedicated vulnerabilities.

Check out the following video to see the code in action: https://bit.ly/3wqF6OD