Did you just stumble upon a download or a file on your computer that has a digital signature from STROYBIZNESPROYEKT? Some of the security products refers to the detected files as Gen:Variant.Adware.Symmi.47502 and Gen:Variant.Graftor.158871. The detection rate for the STROYBIZNESPROYEKT files collected here is 28%. Please read on for more details.
You'll probably notice STROYBIZNESPROYEKT when running the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view additional details from the STROYBIZNESPROYEKT certificate with the following procedure:
Here is a screenshot of a file digitally signed by STROYBIZNESPROYEKT:

As you can see in the screengrab above, Windows states that "This digital signature is OK". This means that the file has been published by STROYBIZNESPROYEKT and that the file has not been tampered with.
If you click the View Certificate button shown in the screenshot 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 examine the address for STROYBIZNESPROYEKT, such as the street name, city and country.
COMODO Code Signing CA 2 has issued the STROYBIZNESPROYEKT 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 STROYBIZNESPROYEKT files I have collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 12/54 | DownloadSetup_367a0.exe |
| 19/55 | DownloadSetup_44zkI.exe |
Here is the detection names for the STROYBIZNESPROYEKT files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| AVG | Generic.8D9 |
| AVware | Winner Solutions (fs) |
| Ad-Aware | Gen:Variant.Graftor.158871, Gen:Variant.Adware.Symmi.47502 |
| Avast | Win32:PUP-gen [PUP] |
| Avira | APPL/Downloader.Gen4 |
| BitDefender | Gen:Variant.Graftor.158871, Gen:Variant.Adware.Symmi.47502 |
| CMC | Packed.Win32.Katusha.1!O |
| Comodo | Application.Win32.bMedia.HA |
| DrWeb | Trojan.Packed.29079, Trojan.Packed.28729 |
| ESET-NOD32 | Win32/bmMedia.BB, a variant of Win32/bmMedia.AM |
| Emsisoft | Gen:Variant.Graftor.158871 (B), Gen:Variant.Adware.Symmi.47502 (B) |
| F-Secure | Gen:Variant.Graftor.158871, Gen:Variant.Adware.Symmi.47502 |
| GData | Gen:Variant.Graftor.158871, Gen:Variant.Adware.Symmi.47502 |
| Ikarus | not-a-virus:AdWare.Winner, Win32.SuspectCrc |
| K7AntiVirus | Unwanted-Program ( 004a8e8b1 ) |
| K7GW | Unwanted-Program ( 004a8e8b1 ) |
| MicroWorld-eScan | Gen:Variant.Graftor.158871, Gen:Variant.Adware.Symmi.47502 |
| NANO-Antivirus | Riskware.Win32.Winner.dgmonz, Riskware.Win32.Winner.dhzaid |
| VBA32 | AdWare.Winner |
| VIPRE | Winner Solutions (fs) |
The detection percentage is based on that I've collected 109 scan reports for the STROYBIZNESPROYEKT files. 31 of these scan reports came up with some sort of detection. You can review the full details of the scan results by examining the files listed above.
The analysis is done on certificates with the following serial numbers: