Did you just download a file that has a digital signature from Feyvwhen Tecsu and wonder if the file is safe? If so, please read on.
You will probably see Feyvwhen Tecsu when double-clicking to run the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screengrab shows:

You can also view the Feyvwhen Tecsu certificate with the following steps:
Here's a screenshot of a file that has been signed by Feyvwhen Tecsu:

As you can see in the screenshot above, the Windows OS states that "This digital signature is OK". This means that the file has been published by Feyvwhen Tecsu 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 examine the address for Feyvwhen Tecsu, such as the street name, city and country.
Igudsu Fosfo has issued the Feyvwhen Tecsu certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.
The following are the Feyvwhen Tecsu files I've collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 3/57 | Kufnemgawj64.dll |
Here's the detection names for the Feyvwhen Tecsu files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| Avira | ADWARE/PennyBee.Gen |
| Ikarus | AdWare.PennyBee |
| Malwarebytes | PUP.Optional.Winsock.HijackBoot |
The detection percentage is based on the fact that I've collected 170 scan reports for the Feyvwhen Tecsu files. 3 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: