Did you just find a download or a file on your computer that has been digitally signed by Illysoft LLC? Some of the security products refers to the detected files as Adware.AdSpy!id0i9I9jDLc and Win-Adware/BHO.SpyNomore.205776. The detection rate for the Illysoft LLC files collected here is 12%. Please read on for more details.
You will probably notice Illysoft LLC when double-clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can also view the Illysoft LLC certificate with the following steps:
Here's a screencap of a file signed by Illysoft LLC:

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 Illysoft LLC 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 Illysoft LLC, such as the street name, city and country.
Thawte Code Signing CA has issued the Illysoft LLC certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the Illysoft LLC files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 6/49 | SNMIEG~1.DLL |
Here's the detection names for the Illysoft LLC files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| Agnitum | Adware.AdSpy!id0i9I9jDLc |
| AhnLab-V3 | Win-Adware/BHO.SpyNomore.205776 |
| Comodo | UnclassifiedMalware |
| Emsisoft | Gen:Trojan.Heur.Nu0@ueaZgUk (B) |
| Norman | FakeAV.C!genr |
| Panda | Adware/SpyNoMore |
The detection percentage is based on that I have gathered 49 scan results for the Illysoft LLC files. 6 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 has been done on certificates with the following serial numbers: