Chase

Challenge details
NameChase
HintOne 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?
DifficultyEasy - Retired [0]
Rated difficultyChase community difficulty rating
First bloodHTB-Bot
Creatorfelamos

Download and unzip the file and check the hint.

File: chase.pcapng

Opening the PCAP Next Generation file, we search through the packets and find an unusual GET request to a .txt file with an odd string name.

Wireshark showing the unusual GET request
The suspicious request exposes an encoded filename.

Taking that filename, JBKEE62NIFXF6ODMOUZV6NZTMFGV6URQMNMH2IBA, and running it through CyberChef with the Magic recipe easily gets us the flag.

CyberChef decoding the suspicious filename
CyberChef identifies and decodes the value.

HTB{MAn_8lu3_73aM_R0cX}

"Chase"ing this down was a cinch!

....... I couldn't resist the Dad joke XD