Did you just run into a download or a file on your computer that has been digitally signed by Crystal Rich Ltd? If that's the case, please read on.
You'll typically notice Crystal Rich Ltd when clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view additional details from the Crystal Rich Ltd certificate with the following steps:
Here is a screenshot of a file signed by Crystal Rich Ltd:

As you can see in the screenshot above, Windows reports that "This digital signature is OK". This implies that the file has been published by Crystal Rich Ltd 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 Crystal Rich Ltd, such as the street name, city and country.
Symantec Class 3 SHA256 Code Signing CA, VeriSign Class 3 Code Signing 2010 CA and DigiCert SHA2 Assured ID Code Signing CA has issued the Crystal Rich Ltd certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the Crystal Rich Ltd files I have collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 1/68 | InternetOff.exe |
| 1/52 | USBSRService.exe |
| 0/39 | LHShellExt64.dll |
| 0/50 | LHShellExt64.dll |
| 0/48 | ioffsvc.exe |
| 0/67 | LHShellExt64.dll |
| 0/57 | InternetOff.exe |
| 0/61 | IOffSvc.exe |
| 0/67 | LHShellExt64.dll |
| 0/43 | zentimoservice.exe |
| 0/46 | USBSafelyRemove.exe |
| 0/55 | LHShellExt32.dll |
Here's the detection names for the Crystal Rich Ltd files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| APEX | Malicious |
| CMC | Packed.Win32.Obfuscated.10!O |
The detection percentage is based on the fact that I've gathered 954 scan reports for the Crystal Rich Ltd files. 2 of these scan results 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: