I apologize if there are any misunderstandings in my response, as I am not fluent in Russian.
Allow me to explain this way: The game utilizes RAR's SFX compression, which you can learn more about here: WinRAR SFX Documentation.
This method automatically generates a temporary folder to safely store documents after they are extracted. Additionally, the SFX is set to automatically enable silent mode 2, which omits the start dialog during these operations for smoother processing. This is the extent of my knowledge on SFX compression.
If you have any concerns about the game potentially harming your computer, please feel free to remove it.
Thank you so much.