Qxjmc2fy.7z.001 -

: It is a "spanned" or "split" archive. The .001 extension indicates this is the first piece of a larger file that was divided into smaller segments to make it easier to transfer or store.

: It likely uses AES-256 encryption if the creator enabled security, which is a standard feature of the 7z format. Requirements for Extraction QXJmc2FY.7z.001

Do you have the of this archive (like .002 or .003) in the same folder? : It is a "spanned" or "split" archive

If you did not expect to receive this file, exercise caution. Malware is occasionally distributed in split archives to bypass email attachment size limits or security scanners that struggle to inspect partial files. QXJmc2FY.7z.001