Using sandboxes (like Windows Sandbox ) to open unknown files. Scanning with VirusTotal before extraction.
Since the specific content is a mystery, here are three distinct blog post "angles" you can take depending on what is actually inside that folder: Option 1: The "Digital Archaeology" Tale 4598730152.7z
Why 7-Zip is the "GOAT" (Greatest of All Time) for high-ratio compression. Using sandboxes (like Windows Sandbox ) to open