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

Chapter 3: Antivirus Research Approaches

In this chapter, you will learn about the Windows operating system protection rings concept, we will introduce two of our real-life bypass examples, and you will also learn the basic three vulnerabilities that can be used to bypass antivirus software.

After explaining what leads are, how they help us, and how to gather them to start conducting antivirus research, we have now come to the stage where it is time to choose which approach is most appropriate for conducting research on antivirus software and then starting to research the leads we found in the previous chapter.

In this chapter, we will go through the following topics:

  • Understanding the approaches to antivirus research
  • Introducing the Windows operating system
  • Understanding protection rings
  • Protection rings in the Windows operating system
  • Windows access control list
  • Permission problems in antivirus software
  • Unquoted Service Path
  • DLL hijacking...