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

Investigating lateral movement techniques

When investigating lateral movement techniques, the primary technique that is used is the Exploitation of Remote Services [T1210]. In this technique, the threat actor utilizes a combination of compromised credentials and existing remote access tools such as SMB and RDP to access other systems on the same network. Vulnerabilities such as EternalBlue were widely exploited by threat actors such as NotPetya, as well as malware variants such as Trickbot.

The primary source of data that should be leveraged to identify lateral movement is NetFlow. As we saw in Chapter 9, a review of NetFlow can often reveal the use of SMB or RDP through multiple connections from one or a few machines to the rest of the network over a short period. For example, a systems administrator that is performing remote maintenance on a server within a server LAN segment will RDP to a single box, perform some of the maintenance tasks over say a 10- to 15-minute period, and...