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Antivirus Bypass Techniques

You're reading from Antivirus Bypass Techniques Learn practical techniques and tactics to combat, bypass, and evade antivirus software

Product type Paperback

Published in Jul 2021

Publisher Packt

ISBN-13 9781801079747

Length 242 pages

Edition 1st Edition

Concepts

Malware Analysis

Authors (2):

Uriel Kosayev

Nir Yehoshua

View More author details

Table of Contents (13) Chapters

Preface

1. Section 1: Know the Antivirus – the Basics Behind Your Security Solution

2. Chapter 1: Introduction to the Security Landscape FREE CHAPTER

3. Chapter 2: Before Research Begins

4. Chapter 3: Antivirus Research Approaches

5. Section 2: Bypass the Antivirus – Practical Techniques to Evade Antivirus Software

6. Chapter 4: Bypassing the Dynamic Engine

7. Chapter 5: Bypassing the Static Engine

8. Chapter 6: Other Antivirus Bypass Techniques

9. Section 3: Using Bypass Techniques in the Real World

10. Chapter 7: Antivirus Bypass Techniques in Red Team Operations

11. Chapter 8: Best Practices and Recommendations

12. Other Books You May Enjoy

DLL hijacking

This vulnerability takes advantage of the insecure DLL loading mechanism in the Windows operating system.

When software wants to load a particular DLL, it uses the LoadLibraryW() Windows API call. It passes as a parameter to this function the name of the DLL it wishes to load.

We do not recommend using the LoadLibrary() function, due to the fact that it is possible to replace the original DLL with another one that has the same name, and in that way to cause the program to run our DLL instead of the originally intended DLL.

In non-antivirus software, this vulnerability can have a low/medium severity level, but in the context of antivirus software, this vulnerability could reach critical severity, since we could actually cause the antivirus to load and run a malicious DLL. In certain cases, it could even cause the DLL to disable the antivirus itself or even aid in bypassing white-list mechanisms.

Important note

In order to exploit a DLL hijacking vulnerability...

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Authors (2)

Nir Yehoshua

Nir Yehoshua

Nir Yehoshua is an Israeli security researcher with more than 8 years of experience in several information security fields. His specialties include vulnerability research, malware analysis, reverse engineering, penetration testing, and incident response. He is an alumnus of an elite security research and incident response team in the Israel Defense Forces. Today, Nir is a full-time bug bounty hunter and consults for Fortune 500 companies, aiding them in detecting and preventing cyber-attacks. Over the years, Nir has discovered security vulnerabilities in several companies, including FACEIT, Bitdefender, McAfee, Intel, Bosch, and eScan Antivirus, who have mentioned him in their Hall of Fame.

See other products by Nir Yehoshua

Uriel Kosayev

Uriel Kosayev

Uriel Kosayev is an Israeli security researcher with over eight years of experience in the cybersecurity field. Uriel is the author of the Antivirus Bypass Techniques book and a lecturer who has developed courses in the cybersecurity field. Uriel has hands-on experience in malware research, reverse engineering, penetration testing, digital forensics, and incident response. During his army service, Uriel worked to strengthen an elite incident response team in both practical and methodological ways.

See other products by Uriel Kosayev

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