Did you just run into a file that has a digital signature from IKARUS Security Software GmbH? If so, please read on.
You will typically see IKARUS Security Software GmbH when double-clicking to run the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can also view the IKARUS Security Software GmbH certificate with the following procedure:
Here's a screenshot of a file digitally signed by IKARUS Security Software GmbH:

As you can see in the screenshot above, Windows states that "This digital signature is OK". This means that the file has been published by IKARUS Security Software GmbH and that the file has not been tampered with.
If you click the View Certificate button shown in the screenshot above, you can see 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 IKARUS Security Software GmbH, such as the street name, city and country.
VeriSign Class 3 Code Signing 2009-2 CA and StartCom Class 3 Primary Intermediate Object CA has issued the IKARUS Security Software GmbH 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 IKARUS Security Software GmbH files I have gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/43 | vdbupdate.dll |
| 0/57 | ntguard_x64.sys |
| 0/50 | ikproc_x64.dll |
| 0/55 | imaci.dll |
| 0/56 | ikproc_x64.dll |
| 0/56 | imaci_x64.dll |
| 0/53 | ikproc_x64.dll |
The detection percentage is based on the fact that I have gathered 370 scan reports for the IKARUS Security Software GmbH 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: