It may be a specific utility for bypass testing or system "knocking" protocols, often used in networking or cybersecurity contexts. Safety Recommendation
Upload the file (or its hash) to get a multi-engine scan and behavior report from over 70 antivirus vendors. File: Knock.Harder.v1.0.4.3.zip ...
If you are analyzing this file for security purposes, please use the following resources for a "deep report": It may be a specific utility for bypass