Because this is an archive file, you should treat it with caution if the source is unknown: .ZIP Files (TMS) – Phrase
: It may be a localized backup of configuration files or a content package exported from a management platform for transport. Technical Characteristics of a .zip Archive
As a .zip file, "ocmts.zip" functions as a designed to:
Based on technical context for files with similar naming conventions: Likely Identity
: Use lossless compression (typically the DEFLATE algorithm) to minimize file size.