Did you just find a download or a file on your computer that has been digitally signed by Monarch Downloads? Some of the security products refers to the detected files as Optimum Installer (fs) and Win.Trojan.Agent-763594. The detection rate for the Monarch Downloads files collected here is 9%. Please read on for more details.
You will typically see Monarch Downloads when clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view the digital signature details for Monarch Downloads with the following steps:
Here's a screenshot of a file digitally signed by Monarch Downloads:

As you can see in the screenshot above, Windows reports that "This digital signature is OK". This means that the file has been published by Monarch Downloads 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, and so on. You can also see the address for Monarch Downloads, such as the street name, city and country.
COMODO Code Signing CA 2 has issued the Monarch Downloads certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the Monarch Downloads files I have collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 5/54 | BluestacksSetup.exe |
Here's the detection names for the Monarch Downloads files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| AVG | Generic.1E0 |
| AVware | Optimum Installer (fs) |
| Antiy-AVL | Trojan/Win32.SGeneric |
| ClamAV | Win.Trojan.Agent-763594 |
| VIPRE | Optimum Installer (fs) |
The detection percentage is based on the fact that I've collected 54 scan results for the Monarch Downloads files. 5 of these scan results came up with some sort of detection. You can review 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: