Many "multihack" archives found on forums or file-sharing sites are actually trojans or info-stealers designed to compromise your accounts.
The file format .rar itself is not harmful, but it is a common vehicle for delivering malware. OsirisMultihack.rar
Is there a safe way to open an rar file using a windows program? Many "multihack" archives found on forums or file-sharing
typically refers to a compressed archive containing Osiris , a popular open-source "multihack" for Counter-Strike (CS). While the base Osiris project on GitHub is a legitimate (though prohibited by game terms) software project for educational and gaming purposes, downloading it as a .rar from third-party sites carries significant security risks. Key Features & Contents typically refers to a compressed archive containing Osiris
Before running anything, upload the file to VirusTotal to see reports from multiple antivirus engines.
A virus inside a .rar file generally cannot harm your system until it is extracted and executed.