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

Working with Regshot

While gathering leads to conduct antivirus research, we also need to understand which registry values the antivirus software has added to help us figure out which files and registry values it has added. To gather this information, we're going to use the Regshot tool.

Regshot is an open source tool that lets you take a snapshot of your registry, then compare two registry shots, before and after installing a program.

To take the first shot, we open the tool, define whether we want the output in HTML or plain text format, define the save location of the file, and then click 1st shot:

Figure 2.20 – The 1st shot button in Regshot

Only after taking the first shot will we install the antivirus software we are interested in researching. After completing the installation, go back into Regshot and click 2nd shot:

Figure 2.21 – The 2nd shot button in Regshot

After taking the second shot, you can then...