HackBlue

Labs / Packet captures

The lookup right before the download

A workstation downloaded a binary over plain HTTP. Use tshark on the saved capture to tie the DNS lookup to the download and pull out the URL and user agent.

  • Terminal mission
  • Beginner
  • 4 objectives
  • 0 of 4 solved

Briefing

EDR quarantined a file on 10.0.20.15 a few seconds after the user opened an email attachment. The network sensor kept a short capture: /cases/ws15.pcap.

tshark -r reads a capture. -Y applies a display filter, and -T fields -e prints just the fields you name, one packet per line.

analyst@sensor-01

sensor-01 · Packet captures

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