Did you just run into a file that is digitally signed by NIKON CORPORATION? If that's the case, please read on.
You will probably see NIKON CORPORATION when double-clicking to run the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can also view the NIKON CORPORATION certificate with the following steps:
Here's a screengrab of a file that has been signed by NIKON CORPORATION:

As you can see in the screengrab above, Windows states that "This digital signature is OK". This implies that the file has been published by NIKON CORPORATION and that the file has not been tampered with.
If you click the View Certificate button shown in the screenshot above, you can see 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 examine the address for NIKON CORPORATION, such as the street name, city and country.
VeriSign Class 3 Code Signing 2004 CA, VeriSign Class 3 Code Signing 2010 CA and Symantec Class 3 SHA256 Code Signing CA has issued the NIKON CORPORATION certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screencap above.
These are the NIKON CORPORATION files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/47 | NkMonitor.exe |
| 0/46 | IFA.exe |
| 0/52 | Welcome.exe |
| 0/68 | NkMC2.exe |
| 0/48 | Welcome.exe |
The detection percentage is based on that I've collected 261 scan reports for the NIKON CORPORATION files. 0 of these scan results came up with some sort of detection. You can view the full details of the scan results by examining the files listed above.
The analysis is done on certificates with the following serial numbers: