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

VirusTotal

In this book and in research of antivirus bypass techniques in general, we will use platforms such as VirusTotal a lot.

VirusTotal (https://www.virustotal.com/) is a very well-known and popular malware-scanning platform.

VirusTotal includes detection engines of various security vendors that can be checked against when uploading files, to check whether these detection engines detect a file as malware or even as suspicious, searching values such as the Uniform Resource Locator (URL), Internet Protocol (IP) addresses, and hashes of already uploaded files. VirusTotal provides many more features, such as a VirusTotal graph, which provide the capability to check relations of files, URLs, and IP addresses and cross-referencing between them.

Platforms such as VirusTotal are very useful to us to understand whether our malware that is based on some of our bypass techniques actually bypasses part—or even all—of the antivirus engines present in the relevant platform...