Did you just stumble upon a file that has a digital signature from a9t9 software GmbH? If that's the case, please read on.
You will probably notice a9t9 software GmbH when clicking to run 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 a9t9 software GmbH with the following procedure:
Here is a screenshot of a file signed by a9t9 software GmbH:

As you can see in the screenshot above, the Windows OS reports that "This digital signature is OK". This means that the file has been published by a9t9 software GmbH and that no one has tampered with the file.
If you click the View Certificate button shown in the screencap 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 view the address for a9t9 software GmbH, such as the street name, city and country.
COMODO RSA Code Signing CA has issued the a9t9 software GmbH certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screengrab above.
These are the a9t9 software GmbH files I have collected, thanks to the FreeFixer users.Unfortunately I don't have any scan result from VirusTotal available for the a9t9 software GmbH files at the moment. The scan results will appear here as soon as a FreeFixer user uploads a file digitally signed by a9t9 software GmbH.
| Detection Ratio | File Name |
|---|---|
| Not available | kantu-cv-host.exe |
| Not available | kantux-setup.exe |
The analysis has been done on certificates with the following serial numbers: