You're reading from Mastering Malware Analysis - Second Edition

Product typeBook

Published inSep 2022

PublisherPackt

ISBN-139781803240244

Edition2nd Edition

Concepts

Malware Analysis

Authors (2):

Alexey Kleymenov

Amr Thabet

View More author details

Exploring IAT hooking

Import Address Table hooking (IAT hooking) is another form of API hooking that is not used as often. This hooking technique doesn’t require any disassembler, code patching, or trampoline. The idea behind it is to modify the import table’s addresses so that they point to the malicious hooking functions rather than the actual API. In this case, the hooking function executes jmp on the actual API address (or the call after pushing the API arguments to the stack), and then returns to the actual program, as shown in the following diagram:

Figure 5.20 – The IAT hooking mechanism

This hooking is not effective against the dynamic loading of APIs (using GetProcAddress and LoadLibrary), but it’s still effective against many legitimate applications that have most of their required APIs in the import table.

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Mastering Malware Analysis - Second Edition

Published in: Sep 2022Publisher: PacktISBN-13: 9781803240244

Authors (2)

Alexey Kleymenov

Alexey Kleymenov started working in the information security industry in his second year at university and now has more than 14 years of practical experience at several international cybersecurity companies. He is a malware analyst and software developer who is passionate about reverse engineering, automation, and research. Alexey has taken part in numerous investigations analyzing all types of malicious samples, has developed various systems to perform threat intelligence activities in the IT, OT, and IoT sectors, and has authored several patents. Alexey is a member of the (ISC)² organization and holds the CISSP certification. Finally, he is a founder of the RE and More project, teaching people all over the world how to perform malware analysis in the most efficient way.
Read more about Alexey Kleymenov

Amr Thabet

Amr Thabet is a malware researcher and an incident handler with over 10 years of experience. He has worked in several Fortune 500 companies, including Symantec and Tenable. Currently, he is the founder of MalTrak, providing real-world in-depth training in malware analysis, incident response, threat hunting, and red teaming to help the next generation of cybersecurity enthusiasts to build their careers in cybersecurity. Amr is also a speaker and trainer at some of the top security conferences all around the world, including Blackhat, DEFCON, Hack In Paris, and VB Conference. He was also featured in Christian Science Monitor for his work on Stuxnet.
Read more about Amr Thabet

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