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

Product type Paperback

Published in Aug 2023

Publisher Packt

ISBN-13 9781837634781

Length 314 pages

Edition 1st Edition

Concepts

Cybersecurity

Author (1):

Mostafa Yahia

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Table of Contents (22) Chapters

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

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Email flow

An email flow is the flow path that an email follows and the hops that the email passes when sent from the sender until it's delivered to the recipient. The email crosses multiple hops between the sender and the recipient before it is delivered. Most of them use SMTP. Let’s take a look at these hops in detail:

Mail User Agent (MUA): This refers to the agent is used by the client to send the email. Examples include Outlook and browsers such as Google Chrome, Mozilla Firefox, and others.
Mail Submission Agent (MSA): The server that receives the email after the client has submitted it from its MUA.
Mail Transfer Agent (MTA): Also known as the SMTP relay server, this is the email server that receives the message from the MSA and passes it to several MTA servers until it’s delivered to the recipient’s mail exchange server.
Mail Exchange (MX): The email server that is responsible for receiving messages intended for a particular domain...