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Digital Forensics and Incident Response

Digital Forensics and Incident Response

By : Gerard Johansen
4.9 (15)
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Digital Forensics and Incident Response

Digital Forensics and Incident Response

4.9 (15)
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)
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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

ClamAV

The first step in conducting a static analysis is to determine if the potential malware under analysis has been previously identified. A single sample’s hash can be uploaded to sites such as VirusTotal, but if a responder has acquired several files through their analysis, they will need to be able to determine if there are any that warrant further examination.

One technique is to use a commercial antivirus scanner to scan the directory. In this case, a free, open source tool that can be leveraged is ClamAV. ClamAV is a command-line utility that allows responders to scan a directory with a variety of suspicious file formats. From here, suspicious files that are identified can be further analyzed by the responder.

To set up ClamAV, download the package at https://www.clamav.net/downloads. In this example, we will use the Windows MSI file to install ClamAV.

The efficacy of ClamAV is largely dependent on the signatures that are included as part of the scanning package...

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