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Hands-On Network Forensics

You're reading from   Hands-On Network Forensics Investigate network attacks and find evidence using common network forensic tools

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Product type Paperback
Published in Mar 2019
Publisher
ISBN-13 9781789344523
Length 358 pages
Edition 1st Edition
Languages
Concepts
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Author (1):
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Nipun Jaswal Nipun Jaswal
Author Profile Icon Nipun Jaswal
Nipun Jaswal
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Toc

Table of Contents (16) Chapters Close

Preface 1. Section 1: Obtaining the Evidence
2. Introducing Network Forensics FREE CHAPTER 3. Technical Concepts and Acquiring Evidence 4. Section 2: The Key Concepts
5. Deep Packet Inspection 6. Statistical Flow Analysis 7. Combatting Tunneling and Encryption 8. Section 3: Conducting Network Forensics
9. Investigating Good, Known, and Ugly Malware 10. Investigating C2 Servers 11. Investigating and Analyzing Logs 12. WLAN Forensics 13. Automated Evidence Aggregation and Analysis 14. Other Books You May Enjoy 15. Assessments

Decoding the Metasploit shell

Let's start investigating the file in Wireshark to try to deduce what happened. We will focus on gathering the following details:

  • C2 server IP
  • C2 server port
  • Infected system IP
  • Infected system's port
  • Actions performed by the attacker
  • Time of the attack
  • Duration of the attack

Let's fire up Wireshark and choose Statistics | Conversations | TCP tab:

We can see that we have two conversations primarily between 192.168.46.128 and 192.168.46.129 on port 80 and 4433. Let's filter the conversation using TCP as the filter and analyze the output:

We can see that the first TCP packets (23-25) are nothing but the three-way handshake. However, next, we have a separate conversation starting from packet 71. Another strange thing is that the communication port being used is port 80. However, for some reason, the data being displayed is...

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