Did you just run into a download or a file on your computer that is digitally signed by Restoro Ltd? Some of the security products refers to the detected files as Program.Unwanted.4763 and PUP.Optional.Restoro. The detection rate for the Restoro Ltd files collected here is 4%. Please read on for more details.
You'll probably see Restoro Ltd when running the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screengrab shows:

You can view the digital signature details for Restoro Ltd with the following steps:
Here's a screenshot of a file signed by Restoro Ltd:

As you can see in the screengrab above, the Windows OS reports that "This digital signature is OK". This means that the file has been published by Restoro Ltd and that the file has not been tampered with.
If you click the View Certificate button shown in the screengrab above, you can view all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, etc. You can also see the address for Restoro Ltd, such as the street name, city and country.
Symantec Class 3 SHA256 Code Signing CA has issued the Restoro Ltd certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screengrab above.
These are the Restoro Ltd files I have collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 2/72 | Au_.exe |
| 2/70 | RestoroApp.exe |
| 3/70 | RestoroApp.exe |
| 3/69 | RestoroApp.exe |
| 3/71 | Bu_.exe |
Here's the detection names for the Restoro Ltd files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| Comodo | ApplicUnwnt@#4rj4wrugtyn9, ApplicUnwnt@#1ls8d47wupam2 |
| DrWeb | Program.Unwanted.4763 |
| GData | Win32.Application.Restoro.A |
| Malwarebytes | PUP.Optional.Restoro |
The detection percentage is based on the fact that I have gathered 352 scan results for the Restoro Ltd files. 13 of these scan reports came up with some sort of detection. If you like, you can view the full details of the scan results by examining the files listed above.
The analysis is based on certificates with the following serial numbers: