Right-click the file and use your security software (e.g., Windows Defender) to scan it for malware before opening.
If this file is related to a game (like Marvel's Avengers, Skyrim, or a 3D modeling program): r_thor00.rar
Based on a search of available information, the file "r_thor00.rar" does not correspond to a widely recognized public file, software, or official documentation. It is likely one of the following: Right-click the file and use your security software (e