Did you just stumble upon a download or a file on your computer that has a digital signature from Viracure Limited? Some of the security products refers to the detected files as Misleading:Win32/OptimizerElite and Artemis!160E49A5CFC4. The detection rate for the Viracure Limited files collected here is 3%. Please read on for more details.
You will probably see Viracure Limited when 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 view the digital signature details for Viracure Limited with the following steps:
Here is a screenshot of a file that has been signed by Viracure Limited:

As you can see in the screencap above, Windows states that "This digital signature is OK". This implies that the file has been published by Viracure Limited and that no one has tampered with the file.
If you click the View Certificate button shown in the screencap 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, etc. You can also see the address for Viracure Limited, such as the street name, city and country.
VeriSign Class 3 Code Signing 2010 CA has issued the Viracure Limited 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 Viracure Limited files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 2/51 | Optimizer_Pro.exe |
| 4/49 | OptimizerEliteMax.exe |
| 0/50 | PerformanceMonitor.exe |
| 0/50 | _iu14D2N.tmp |
Here's the detection names for the Viracure Limited files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| Ikarus | Misleading |
| McAfee | Artemis!160E49A5CFC4 |
| McAfee-GW-Edition | Artemis!160E49A5CFC4 |
| Microsoft | Misleading:Win32/OptimizerElite |
| TrendMicro-HouseCall | TROJ_GEN.F47V0409 |
The detection percentage is based on that I've collected 200 scan results for the Viracure Limited files. 6 of these scan reports came up with some sort of detection. If you like, you can view the full details of the scan reports by examining the files listed above.
The analysis has been done on certificates with the following serial numbers: