If you are looking for the tool built into Windows to scan for malware, you do need a .rar file or a dongle. MRT KEY MRT Dongle Mobile Repair Tools - deviceparts

: The software is designed to work exclusively with a physical USB key (dongle). Without this hardware key, the official software will typically not run.

The MRT-Dongle is a professional hardware-based tool used for flashing and unlocking Android devices, specifically Meizu, Xiaomi, VIVO, and Huawei.