Mna.7z -

: Supports robust AES-256 encryption. In some configurations, both the file contents and the filenames themselves can be hidden until a password is provided.

Use the official 7-Zip File Manager (7zFM.exe) for a graphical interface. mna.7z

The macOS Finder can often unpack these natively, but third-party tools like Commander One are required to create them or view contents without full extraction. : : Supports robust AES-256 encryption

ZArchiver is a common choice for mobile users to extract and view 7z archives. 7z - man pages section 1: User Commands mna.7z