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

You can also view the Yang Ping certificate with the following procedure:
Here is a screencap of a file that has been signed by Yang Ping:

As you can see in the screenshot above, the Windows OS states that "This digital signature is OK". This implies that the file has been published by Yang Ping and that no one has tampered with the file.
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 see the address for Yang Ping, such as the street name, city and country.
WoSign Class 2 Code Signing CA has issued the Yang Ping certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the Yang Ping files I've collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 1/67 | diskpt.sys |
| 0/55 | xlkfs.sys |
| 0/57 | xlkfs.sys |
| 0/57 | diskp%USERNAME%.sys |
| 0/57 | diskpt.sys |
| 0/55 | diskpt.sys |
| 0/56 | xlkfs.sys |
| 0/55 | diskpt.sys |
| 0/56 | DefenderDaemon.exe |
| 0/54 | diskpt.sys |
| 0/55 | diskpt.sys |
Here is the detection names for the Yang Ping files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| eGambit | Unsafe.AI_Score_77% |
The detection percentage is based on the fact that I've collected 2268 scan reports for the Yang Ping files. 1 of these scan results came up with some sort of detection. If you like, you can review the full details of the scan results by examining the files listed above.
The analysis is done on certificates with the following serial numbers: