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 4: Bypassing the Dynamic Engine

In this chapter, you will learn the basics of bypassing the dynamic engine of an antivirus software.

We will learn how to use VirusTotal and other antivirus engine detection platforms to identify which antivirus software we managed to bypass. Furthermore, we will go through understanding and implementing different antivirus bypass techniques that can be used to potentially bypass antivirus engines, such as process injection, the use of a dynamic-link library (DLL), and timing-based techniques to bypass most of the antivirus software out there.

In this chapter, you will achieve an understanding of practical techniques to bypass antivirus software, and we will explore the following topics:

  • The preparation
  • VirusTotal
  • Antivirus bypass using process injection
  • Antivirus bypass using a DLL
  • Antivirus bypass using timing-based techniques