Book Image

Digital Forensics and Incident Response - Third Edition

By : Gerard Johansen
5 (1)
Book Image

Digital Forensics and Incident Response - Third Edition

5 (1)
By: Gerard Johansen

Overview of this book

An understanding of how digital forensics integrates with the overall response to cybersecurity incidents is key to securing your organization’s infrastructure from attacks. This updated third edition will help you perform cutting-edge digital forensic activities and incident response with a new focus on responding to ransomware attacks. After covering the fundamentals of incident response that are critical to any information security team, you’ll explore incident response frameworks. From understanding their importance to creating a swift and effective response to security incidents, the book will guide you using examples. Later, you’ll cover digital forensic techniques, from acquiring evidence and examining volatile memory through to hard drive examination and network-based evidence. You’ll be able to apply these techniques to the current threat of ransomware. As you progress, you’ll discover the role that threat intelligence plays in the incident response process. You’ll also learn how to prepare an incident response report that documents the findings of your analysis. Finally, in addition to various incident response activities, the book will address malware analysis and demonstrate how you can proactively use your digital forensic skills in threat hunting. By the end of this book, you’ll be able to investigate and report unwanted security breaches and incidents in your organization.
Table of Contents (28 chapters)
1
Part 1: Foundations of Incident Response and Digital Forensics
6
Part 2: Evidence Acquisition
11
Part 3: Evidence Analysis
17
Part 4: Ransomware Incident Response
20
Part 5: Threat Intelligence and Hunting
Appendix

Memory analysis methodology

When examining system memory, analysts should follow a methodology. This ensures that all potential evidence is uncovered and can be utilized in an incident investigation. We will examine two methodologies. The first of these is the SANS six-part methodology. This is geared toward identifying indicators of compromise associated with the execution of malware. Another methodology focuses on leveraging an IP address or other network artifact to identify the malicious code associated with that IP address.

One of the chief aims of memory analysis is to identify potentially malicious processes or executables that can be extracted and examined. Much of the material that is present in this chapter will carry over into Chapter 16, where the extracted data will be further analyzed.

SANS six-part methodology

The SANS institution makes use of a six-part methodology for analyzing memory images. This process is designed to start from an overall view of what is...