: You will need the 7-Zip utility to reassemble the parts. Open only the .001 file; the software will automatically pull data from .002 and .003 to complete the extraction.

: Always run a scan using tools like Windows Security or Virustotal before extraction.

: When files are too large for certain storage or sharing platforms, they are split into numbered parts.

Could you clarify or what you believe it contains? I can help you look for reviews of the specific game, movie, or software once the contents are identified.