Did you just stumble upon a file that is digitally signed by Ori Rejwan? If so, please read on.
You will probably see Ori Rejwan when running the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view additional details from the Ori Rejwan certificate with the following steps:
Here is a screencap of a file that has been signed by Ori Rejwan:

As you can see in the screengrab above, Windows states that "This digital signature is OK". This means that the file has been published by Ori Rejwan and that the file has not been tampered with.
If you click the View Certificate button shown in the screenshot above, you can examine all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, and so on. You can also view the address for Ori Rejwan, such as the street name, city and country.
UTN-USERFirst-Object has issued the Ori Rejwan certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screenshot above.
The following are the Ori Rejwan files I've gathered, thanks to the FreeFixer users.Unfortunately I don't have any scan result from VirusTotal available for the Ori Rejwan files at the moment. The scan results will appear here as soon as a FreeFixer user uploads a file digitally signed by Ori Rejwan.
| Detection Ratio | File Name |
|---|---|
| Not available | umplayer.exe |
| Not available | umplayer.exe |
| Not available | UMPlayer-p4.exe |
The analysis is based on certificates with the following serial numbers: