Book Image

Digital Forensics and Incident Response

By : Gerard Johansen
Book Image

Digital Forensics and Incident Response

By: Gerard Johansen

Overview of this book

Digital Forensics and Incident Response will guide you through the entire spectrum of tasks associated with incident response, starting with preparatory activities associated with creating an incident response plan and creating a digital forensics capability within your own organization. You will then begin a detailed examination of digital forensic techniques including acquiring evidence, examining volatile memory, hard drive assessment, and network-based evidence. You will also explore the role that threat intelligence plays in the incident response process. Finally, a detailed section on preparing reports will help you prepare a written report for use either internally or in a courtroom. By the end of the book, you will have mastered forensic techniques and incident response and you will have a solid foundation on which to increase your ability to investigate such incidents in your organization.
Table of Contents (18 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Packet capture


Capturing network traffic is critical to having a full understanding of an incident. Being able to identify potential C2 traffic IP addresses may provide further information about the type of malware that might have infected a host. In other types of incidents, CSIRT members may be able to identify potential exfiltration methods that an external threat actor is utilizing.

One method is to set up what is referred to as a network tap. A network tap is a system in-line with the compromised host and the switch. For example, in the network diagram, if the host that is compromised is on the 192.168.1.0/24 subnet, the tap should be placed in between the host and the switch. This often involves placing a system in between the host and the switch.

Another option is to configure a Switched Port Analyzer (SPAN) port. In this configuration, the switch closest to the compromised host will have port mirroring enabled. This then sends the traffic from the entire segment the switch is on to...