: Automated bots or caches often rename files with alphanumeric strings.
: Upload the file to VirusTotal to scan it against 70+ antivirus engines.
Where did you this file (e.g., your Downloads folder, a specific app)?
: Use a tool like MediaInfo to see the "encoded date," "writing application," and "source" of the video.
Do you remember something recently that might be related?
Files with "xirn" in the name are frequently associated with: