E7gh7y9uyc.part3.rar -

Do you have the or the original name of the software or media this file is supposed to represent?

If the parts are unusually small (a few KBs) or all identical in size, they are likely suspicious. E7GH7Y9UYC.part3.rar

Before attempting to extract it, run the file through a service like VirusTotal to check for malicious signatures. Do you have the or the original name

The .part3.rar extension indicates this is just one piece of a larger set. You cannot open or extract it without having all other parts (Part 1, Part 2, etc.) in the same folder. etc.) in the same folder.