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Mastering Malware Analysis

Mastering Malware Analysis

By : Alexey Kleymenov, Amr Thabet
4.6 (9)
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Mastering Malware Analysis

Mastering Malware Analysis

4.6 (9)
By: Alexey Kleymenov, Amr Thabet

Overview of this book

New and developing technologies inevitably bring new types of malware with them, creating a huge demand for IT professionals that can keep malware at bay. With the help of this updated second edition of Mastering Malware Analysis, you’ll be able to add valuable reverse-engineering skills to your CV and learn how to protect organizations in the most efficient way. This book will familiarize you with multiple universal patterns behind different malicious software types and teach you how to analyze them using a variety of approaches. You'll learn how to examine malware code and determine the damage it can possibly cause to systems, along with ensuring that the right prevention or remediation steps are followed. As you cover all aspects of malware analysis for Windows, Linux, macOS, and mobile platforms in detail, you’ll also get to grips with obfuscation, anti-debugging, and other advanced anti-reverse-engineering techniques. The skills you acquire in this cybersecurity book will help you deal with all types of modern malware, strengthen your defenses, and prevent or promptly mitigate breaches regardless of the platforms involved. By the end of this book, you will have learned how to efficiently analyze samples, investigate suspicious activity, and build innovative solutions to handle malware incidents.
Table of Contents (20 chapters)
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1
Part 1 Fundamental Theory
4
Part 2 Diving Deep into Windows Malware
10
Part 3 Examining Cross-Platform and Bytecode-Based Malware
14
Part 4 Looking into IoT and Other Platforms

Kernel mode versus user mode

You have already seen several user-mode processes on your computer (all the applications you see are running in user mode) and learned how to modify files, connect to the internet, and perform lots of activities. However, you might be surprised to know that user-mode applications don't have privileges to do all of this.

For any process to create a file or connect to a domain, it needs to send a request to the kernel mode to perform that action. This request is done through what is known as a system call, and this system call switches to kernel mode to perform this action (if permission is granted). Kernel mode and user mode are not only supported by the OS – they are also supported by the processors through protection rings (or hardware restrictions).

Protection rings

x86 processors provide four rings of privileges (x64 is slightly different). Each ring has lower privileges than the previous one, as shown in the following diagram:

...

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