Download and unzip the file and check the hint:
Hint: One of our web servers triggered an AV alert, but none of the sysadmins say they were logged onto it. We've taken a network capture before shutting the server down to take a clone of the disk. Can you take a look at the PCAP and see if anything is up?
Opening the PCAP Next Generation (pcapng) file, we search through the packets and find an unual GET request to a .txt file with an odd string name.
Taking that filename (JBKEE62NIFXF6ODMOUZV6NZTMFGV6URQMNMH2IBA) and running it through CyberChef and using the "Magic" recipe easily gets us the flag.
"Chase"ing this down was a cinch!
I couldn't resist the Dad joke XD