If compressed with LZMA2, the archive creation likely utilized multiple CPU threads for speed. 3. Handling and Extraction

Forensically Analyzing ZIP & Compressed Files | by Josh Lemon

is a compressed archive created using the 7-Zip application. The .7z extension indicates it uses the 7z format, which is an open-source, modular architecture known for its high compression ratio. File Format: 7z (7-Zip)