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

Using indicators of compromise to uncover additional suspect systems

We will now use the indicators of compromise we have found thus far to see whether we can uncover any other systems on our network that might show signs of compromise. Depending on the type of IOC, we will be using the appropriate tool to do a search on our industrial environment.

Discovered IOCs so far

To recall all the indicators of compromise we have found so far, consider the following list:

  • IOC-1 – IP address:
  • IOC-2 – URL:
  • IOC-3 – URI: /serve.html
  • IOC-4 – User agent: <host name> <OS version>
  • IOC-5 – Service name: IPRIP
  • IOC-6 – Malware install command: rundll32.exe <dll-name>Install(A)

Additionally, we can add the location of the IPRIPa.dll file to our list as well as create MD5 and SHA256 hashes from the dll file we extracted (or the one in the c:\windows\temp folder...