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Effective Threat Investigation for SOC Analysts

You're reading from   Effective Threat Investigation for SOC Analysts The ultimate guide to examining various threats and attacker techniques using security logs

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Product type Paperback
Published in Aug 2023
Publisher Packt
ISBN-13 9781837634781
Length 314 pages
Edition 1st Edition
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Author (1):
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Mostafa Yahia Mostafa Yahia
Author Profile Icon Mostafa Yahia
Mostafa Yahia
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Toc

Table of Contents (22) Chapters Close

Preface 1. Part 1: Email Investigation Techniques
2. Chapter 1: Investigating Email Threats FREE CHAPTER 3. Chapter 2: Email Flow and Header Analysis 4. Part 2: Investigating Windows Threats by Using Event Logs
5. Chapter 3: Introduction to Windows Event Logs 6. Chapter 4: Tracking Accounts Login and Management 7. Chapter 5: Investigating Suspicious Process Execution Using Windows Event Logs 8. Chapter 6: Investigating PowerShell Event Logs 9. Chapter 7: Investigating Persistence and Lateral Movement Using Windows Event Logs 10. Part 3: Investigating Network Threats by Using Firewall and Proxy Logs
11. Chapter 8: Network Firewall Logs Analysis 12. Chapter 9: Investigating Cyber Threats by Using the Firewall Logs 13. Chapter 10: Web Proxy Logs Analysis 14. Chapter 11: Investigating Suspicious Outbound Communications (C&C Communications) by Using Proxy Logs 15. Part 4: Investigating Other Threats and Leveraging External Sources to Investigate Cyber Threats
16. Chapter 12: Investigating External Threats 17. Chapter 13: Investigating Network Flows and Security Solutions Alerts 18. Chapter 14: Threat Intelligence in a SOC Analyst’s Day 19. Chapter 15: Malware Sandboxing – Building a Malware Sandbox 20. Index 21. Other Books You May Enjoy

Investigating PowerShell attacks

In the previous sections, you learned about the PowerShell and Windows event logs that help you investigate suspicious executions with PowerShell. During this section, we will introduce an example of PowerShell attacks and examples of suspicious PowerShell commands and cmdlets, along with their description and purpose, to help you investigate and observe suspicious PowerShell executions.

Fileless PowerShell malware

Fileless malware, also known as memory-based malware, refers to a type of malicious code that runs directly in memory without leaving traces of traditional executable files on the system disk.

An attacker may use a PowerShell cradle to download a malicious PowerShell script and execute it directly in memory to evade writing to the disk and evade being detected by defense mechanisms. The following is an example of a common PowerShell cradle that uses the DownloadString function to download a malicious script from a remote server to...

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