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

You can view the digital signature details for Frostwire, LLC with the following steps:
Here is a screenshot of a file signed by Frostwire, LLC:

As you can see in the screenshot above, Windows states that "This digital signature is OK". This means that the file has been published by Frostwire, LLC 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, and so on. You can also examine the address for Frostwire, LLC, such as the street name, city and country.
Thawte Code Signing CA - G2 has issued the Frostwire, LLC certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screencap above.
These are the Frostwire, LLC files I've collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/48 | FrostWire.exe |
The detection percentage is based on that I've gathered 48 scan results for the Frostwire, LLC files. 0 of these scan results came up with some sort of detection. 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: