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Incident Response Techniques for Ransomware Attacks

You're reading from   Incident Response Techniques for Ransomware Attacks Understand modern ransomware attacks and build an incident response strategy to work through them

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Product type Paperback
Published in Apr 2022
Publisher Packt
ISBN-13 9781803240442
Length 228 pages
Edition 1st Edition
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Author (1):
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Oleg Skulkin Oleg Skulkin
Author Profile Icon Oleg Skulkin
Oleg Skulkin
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Table of Contents (17) Chapters Close

Preface 1. Section 1: Getting Started with a Modern Ransomware Attack
2. Chapter 1: The History of Human-Operated Ransomware Attacks FREE CHAPTER 3. Chapter 2: The Life Cycle of a Human-Operated Ransomware Attack 4. Chapter 3: The Incident Response Process 5. Section 2: Know Your Adversary: How Ransomware Gangs Operate
6. Chapter 4: Cyber Threat Intelligence and Ransomware 7. Chapter 5: Understanding Ransomware Affiliates' Tactics, Techniques, and Procedures 8. Chapter 6: Collecting Ransomware-Related Cyber Threat Intelligence 9. Section 3: Practical Incident Response
10. Chapter 7: Digital Forensic Artifacts and Their Main Sources 11. Chapter 8: Investigating Initial Access Techniques 12. Chapter 9: Investigating Post-Exploitation Techniques 13. Chapter 10: Investigating Data Exfiltration Techniques 14. Chapter 11: Investigating Ransomware Deployment Techniques 15. Chapter 12: The Unified Ransomware Kill Chain 16. Other Books You May Enjoy

Master file table

A filesystem contains a lot of different artifacts that can help us in our investigation process. Furthermore, Windows Registry and various logs are also part of the filesystem, but as they are quite complex, we're going to look at them separately.

The most common filesystem type you'll face during your ransomware attacks investigations is the New Technology File System (NTFS). Currently, this is the most common filesystem for Windows, which as you already know, is the main target of ransomware affiliates. Despite the fact that there is an increased interest in Linux systems, usually the threat actors get there through Windows infrastructure compromise, so we'll focus on this operating system.

As incident responders, we're very interested in metadata analysis, so let's dive into one of the core components of NTFS – the Master File Table (MFT). It contains information about filenames, locations, sizes, and, of course, their timestamps...

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