Book Image

Industrial Cybersecurity - Second Edition

By : Pascal Ackerman
Book Image

Industrial Cybersecurity - Second Edition

By: Pascal Ackerman

Overview of this book

With Industrial Control Systems (ICS) expanding into traditional IT space and even into the cloud, the attack surface of ICS environments has increased significantly, making it crucial to recognize your ICS vulnerabilities and implement advanced techniques for monitoring and defending against rapidly evolving cyber threats to critical infrastructure. This second edition covers the updated Industrial Demilitarized Zone (IDMZ) architecture and shows you how to implement, verify, and monitor a holistic security program for your ICS environment. You'll begin by learning how to design security-oriented architecture that allows you to implement the tools, techniques, and activities covered in this book effectively and easily. You'll get to grips with the monitoring, tracking, and trending (visualizing) and procedures of ICS cybersecurity risks as well as understand the overall security program and posture/hygiene of the ICS environment. The book then introduces you to threat hunting principles, tools, and techniques to help you identify malicious activity successfully. Finally, you'll work with incident response and incident recovery tools and techniques in an ICS environment. By the end of this book, you'll have gained a solid understanding of industrial cybersecurity monitoring, assessments, incident response activities, as well as threat hunting.
Table of Contents (26 chapters)
Section 1: ICS Cybersecurity Fundamentals
Section 2:Industrial Cybersecurity – Security Monitoring
Section 3:Industrial Cybersecurity – Threat Hunting
Section 4:Industrial Cybersecurity – Security Assessments and Intel
Chapter 15: Industrial Control System Risk Assessments
Section 5:Industrial Cybersecurity – Incident Response for the ICS Environment

Investigating/forensics of suspicious endpoints

At this point, we take our threat hunt investigation to the suspected victim machine. Let's quickly see what we can find out about from Security Onion. Clicking on the IP address in the Connections dashboard has Kibana open a new tab with the indicator dashboard loaded and the IP address as a search term. This dashboard allows us to see a variety of interesting facts about our suspected victim:

Figure 11.18 – Security Onion – suspicious host – indicator dashboard

At a glance, we can see the types of logs (Dataset) that are present in the database for the suspect system, as well as summary widgets for Source IP, Destination IP, and Destination Port.

In this case, the default indicator screen isn't showing too much useful information, but we can make things fit our needs (starting to see a pattern?). Simply add the Security Onion – DNS - Queries...