HackBlue

Labs / Hashes and verification

Match the quarantine to the intel feed

The mail gateway quarantined five attachments. A threat-intel feed lists known-bad SHA-256 hashes. Hash the attachments and find the one that matches the feed.

  • Terminal mission
  • Beginner
  • 3 objectives
  • 0 of 3 solved

Briefing

The mail gateway held five attachments sent to the finance team this morning. File names prove nothing; the content hash does.

The intel team’s feed is a CSV with one known-bad hash per line, plus the family name and the date it was first seen.

analyst@mail-ir

mail-ir · Hashes and verification

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