Did you just stumble upon a download or a file on your computer that has been digitally signed by Tucows Inc.? Some of the security products refers to the detected files as Trojan.MulDrop5.10078 and Win32/DownloadAdmin.G. The detection rate for the Tucows Inc. files collected here is 6%. Please read on for more details.
You will typically see Tucows Inc. when 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 view additional details from the Tucows Inc. certificate with the following steps:
Here's a screenshot of a file that has been signed by Tucows Inc.:

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 Tucows Inc. 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 see the address for Tucows Inc., such as the street name, city and country.
COMODO Code Signing CA 2 has issued the Tucows Inc. certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the Tucows Inc. files I have gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 2/48 | vLfGhzEG.exe.part |
| 4/51 | smsr.exe |
Here is the detection names for the Tucows Inc. files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| DrWeb | Trojan.MulDrop5.10078 |
| ESET-NOD32 | Win32/DownloadAdmin.G, a variant of Win32/InstallCore.OK |
| VBA32 | Downware.InstallCore |
| VIPRE | DownloadAdmin (fs), InstallCore.b (fs) |
The detection percentage is based on that I have gathered 99 scan results for the Tucows Inc. files. 6 of these scan results came up with some sort of detection. 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: