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

Introducing the Windows operating system

As in this book we are discussing bypassing Windows-based antivirus software, we will now discuss the Windows operating system and its security protection mechanisms.

The earliest Windows operating systems were developed for specific CPUs and other hardware specifications. Windows NT introduced a new breed of Windows, a process-independent operating system that also supports multiprocessing, a multi-user environment, and offers a separate version for workstations and servers.

Initially, Windows NT was written for 32-bit processors, but it was later expanded to a broader architecture range, including IA-32, MIPS, Itanium, ARM, and more. Microsoft also added support for 64-bit CPU architectures along with major new features such as Windows API/Native API, Active Directory, NTFS, Hardware Abstraction Layer, security improvements, and many more.

Over the years, many parties criticized Microsoft for its lack of emphasis on information security...