You're reading from Effective Threat Investigation for SOC Analysts

Product type Book

Published in Aug 2023

Publisher Packt

ISBN-13 9781837634781

Pages 314 pages

Edition 1st Edition

Languages

Concepts

Cybersecurity

Author (1):

Mostafa Yahia

Table of Contents (22) Chapters

Preface

1. Part 1: Email Investigation Techniques

2. Chapter 1: Investigating Email Threats

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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Investigating network flows

The flow, also commonly known as NetFlow, is network session information generated by network devices, such as routers and layer 3 switches, to aid network engineers during network issue troubleshooting. The flows have several names, based on the device vendor – for example, the used protocol for Cisco devices’ flow control is NetFlow (which is the most common and well-known flow protocol), Jupiter devices’ flow protocol is J-Flow, and HP devices’ flow protocol is Netstream.

Regardless of the name of the protocol used to generate the network session information, the generated information includes at least the following details:

Timestamps (start and finish)
A source IP
A destination IP
A source port
A destination port
Transferred bytes

Most SIEM solutions provide an integration capability to receive flows from different network devices. As an SOC analyst, you should take advantage of the network...