Did you just stumble upon a file that has a digital signature from SHADE SANDBOX LLC? If that's the case, please read on.
You will typically notice SHADE SANDBOX LLC when running the file. The publisher name is displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view the digital signature details for SHADE SANDBOX LLC with the following procedure:
Here is a screenshot of a file digitally signed by SHADE SANDBOX LLC:

As you can see in the screenshot above, the Windows OS reports that "This digital signature is OK". This implies that the file has been published by SHADE SANDBOX LLC and that no one has tampered with the file.
If you click the View Certificate button shown in the screenshot 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 SHADE SANDBOX LLC, such as the street name, city and country.
GlobalSign Extended Validation CodeSigning CA - SHA256 - G3 has issued the SHADE SANDBOX LLC certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screencap above.
The following are the SHADE SANDBOX LLC files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/70 | filewall.exe |
| 0/69 | comlayerAMD64.dll |
| 0/70 | comlayer.dll |
The detection percentage is based on the fact that I've gathered 209 scan reports for the SHADE SANDBOX LLC files. 0 of these scan reports 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: