Import Hash

Noun · Security & Infosec

Definitions

  1. A hash derived from the imported functions and libraries of a binary, commonly used to cluster related Windows malware samples even when the exact file hash changes. Import hashes help analysts spot shared tooling, packing differences, and family relationships.

    In plain English: A fingerprint based on which functions a program imports, used to compare malware samples.

    Example: "The binaries had different SHA-256 values, but the same import hash linked them to the earlier campaign."

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