Historically, "The Cleaner" was a popular legitimate security tool (by MooSoft) used to detect and remove trojans.
: They may contain executables that steal browser passwords, session cookies, or cryptocurrency wallet information. File: The.Cleaner.zip ...
: The .zip likely contains the "malware sample" itself, often protected with the password infected to prevent accidental execution. File: The.Cleaner.zip ...
: While less common now, older tech archives might store it as a .zip file for manual installation. File: The.Cleaner.zip ...
If you are looking at a technical write-up (like a CTF challenge or a malware sandbox report):