In session three in which I exported suspicious and malicious content, I used the following for example to identify the name of the malicious file: However, when looking at packets for patterns, sequence of bytes, etc., do we really need to leverage grep or another external tool? Let's see. Many times, when looking at packets or logs, I leverage " grep -perl-regexp". While I did not do blog posts for those (and I wish I had thought about it before), I've chosen to do a blog post for the TShark and working with regular expressions, In a session prior to these, I focused on Full Packet Capturing with TShark for Continuous Monitoring & Threat Intel via IP, Domains, & URLS. In the 3rd session, we extracted suspicious and malicious content from PCAPS. In the second session, we focused on reconnaissance at the transport layer and working with some common application protocols. In the first of those videos, we did an intro to TShark by focusing on reconnaissance at the IP layer. As a result, I produced some videos using TShark. Recently, I've been working with the SANS Institute on some Livestream sessions, promoting the SEC503: Intrusion Detection In Depth class. = Recursion desired: Do query recursively For example the payload content for DNS in my case would be what the drop down arrow on the left shows in my case is the payload content Transaction ID: 0x48b7Ġ. Is the payload contents the arrow on the left where I can drop down and see the subsections. It says ethernet II, Internet Protocol Version, USP, DNS.
Or would payload content be everything after ethernet II so 500 bytes. So for example if I were to click on ethernet II would the size of the payload content be 14 bytes which is the size of ethernet II.
Does it refer to everything after the highlighted frame. I also want to know what the size of the payload means. If I were to click on a layer and see the breakdown. I have come across the term payload content many times but I am not sure of its meaning.
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