Use an updated antivirus or VirusTotal to check the archive before extracting it.
While information on this specific package is niche, "Dependencies" files in this context typically include: KittyMocap_-_KM386_GMs_Dependencies.rar
Files ending in .rar from blog posts or file-sharing sites carry security risks. If you are attempting to use this file: Use an updated antivirus or VirusTotal to check