Book Image

PowerShell Automation and Scripting for Cybersecurity

By : Miriam C. Wiesner
5 (2)
Book Image

PowerShell Automation and Scripting for Cybersecurity

5 (2)
By: Miriam C. Wiesner

Overview of this book

Take your cybersecurity skills to the next level with this comprehensive guide to PowerShell security! Whether you’re a red or blue teamer, you’ll gain a deep understanding of PowerShell’s security capabilities and how to use them. After revisiting PowerShell basics and scripting fundamentals, you’ll dive into PowerShell Remoting and remote management technologies. You’ll learn how to configure and analyze Windows event logs and understand the most important event logs and IDs to monitor your environment. You’ll dig deeper into PowerShell’s capabilities to interact with the underlying system, Active Directory and Azure AD. Additionally, you’ll explore Windows internals including APIs and WMI, and how to run PowerShell without powershell.exe. You’ll uncover authentication protocols, enumeration, credential theft, and exploitation, to help mitigate risks in your environment, along with a red and blue team cookbook for day-to-day security tasks. Finally, you’ll delve into mitigations, including Just Enough Administration, AMSI, application control, and code signing, with a focus on configuration, risks, exploitation, bypasses, and best practices. By the end of this book, you’ll have a deep understanding of how to employ PowerShell from both a red and blue team perspective.
Table of Contents (19 chapters)
1
Part 1: PowerShell Fundamentals
6
Part 2: Digging Deeper – Identities, System Access, and Day-to-Day Security Tasks
12
Part 3: Securing PowerShell – Effective Mitigations In Detail

Summary

AMSI is a great tool that helps you to secure your environment. It already protects you against most malicious code and since malware vendors constantly improve their solutions, it will help you against most known (and probably even some unknown) threats as long as you keep your antimalware software up to date.

But similar to other solutions, it’s of course not the solution to everything and there are ways to bypass it. However, since antimalware vendors are always looking out for new discoveries to improve their products, there will be a detection shortly after a bypass is discovered.

AMSI is one part of the solution but not the entire picture, and to keep your environment as secure as possible, there are many other ways that you need to keep in mind. In Chapter 13, What Else? – Further Mitigations and Resources, we will look at what else you can do to secure your environment.