Book Image

Mastering Malware Analysis

By : Alexey Kleymenov, Amr Thabet
Book Image

Mastering Malware Analysis

By: Alexey Kleymenov, Amr Thabet

Overview of this book

With the ever-growing proliferation of technology, the risk of encountering malicious code or malware has also increased. Malware analysis has become one of the most trending topics in businesses in recent years due to multiple prominent ransomware attacks. Mastering Malware Analysis explains the universal patterns behind different malicious software types and how to analyze them using a variety of approaches. You will learn how to examine malware code and determine the damage it can possibly cause to your systems to ensure that it won't propagate any further. Moving forward, you will cover all aspects of malware analysis for the Windows platform in detail. Next, you will get to grips with obfuscation and anti-disassembly, anti-debugging, as well as anti-virtual machine techniques. This book will help you deal with modern cross-platform malware. Throughout the course of this book, you will explore real-world examples of static and dynamic malware analysis, unpacking and decrypting, and rootkit detection. Finally, this book will help you strengthen your defenses and prevent malware breaches for IoT devices and mobile platforms. By the end of this book, you will have learned to effectively analyze, investigate, and build innovative solutions to handle any malware incidents.
Table of Contents (18 chapters)
Free Chapter
1
Section 1: Fundamental Theory
3
Section 2: Diving Deep into Windows Malware
5
Unpacking, Decryption, and Deobfuscation
9
Section 3: Examining Cross-Platform Malware
13
Section 4: Looking into IoT and Other Platforms

Dynamic linking

Statically linked libraries lead to having the same code copied over and over again inside each program that might need it, which in turn leads to the loss of hard disk space and increases the size of the executable files.

In modern operating systems such as Windows and Linux, there are hundreds of libraries, and each one has thousands of functions for UI, graphics, 3D, internet communications, and more. Because of that, static linking appeared to be limited and to mitigate this issue, dynamic linking emerged. It allowed programs to expand more and become more functionality-rich, as we see today:

Figure 8: Dynamic linking from compilation to loading

Dynamic linking works in the following way: instead of storing the code inside each executable, any needed library is loaded beside each application in the same virtual memory, so that this application can directly call the required functions. These libraries are named Dynamic Link Libraries (DLLs), as you can see in the previous...