Did you just find a download or a file on your computer that has been digitally signed by Mezaa? Some of the security products refers to the detected files as Mezaa and ApplicUnwnt. The detection rate for the Mezaa files collected here is 6%. Please read on for more details.
You'll typically notice Mezaa when double-clicking to run the file. The publisher name is displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view additional details from the Mezaa certificate with the following steps:
Here is a screenshot of a file signed by Mezaa:

As you can see in the screengrab above, the Windows OS states that "This digital signature is OK". This means that the file has been published by Mezaa and that no one has tampered with the file.
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 Mezaa, such as the street name, city and country.
VeriSign Class 3 Code Signing 2010 CA has issued the Mezaa certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screenshot above.
The following are the Mezaa files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 4/55 | MezaaTray.exe |
| 8/55 | Mezaa.Service.exe |
| 4/57 | MZA.dll |
| 0/54 | MZA64.dll |
| 0/54 | MZA.dll |
Here is the detection names for the Mezaa files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| AVG | Generic.291 |
| Antiy-AVL | Trojan/Win32.SGeneric |
| Bkav | W32.HfsAdware.758C |
| Comodo | ApplicUnwnt |
| ESET-NOD32 | Win32/AdWare.Sendori.C, MSIL/Adware.Sendori.A |
| McAfee | Artemis!BAFE308E8EDF |
| McAfee-GW-Edition | Artemis |
| Sophos | Mezaa |
| Symantec | Adware.Mezaa, Adware.BL |
| TrendMicro-HouseCall | Suspicious_GEN.F47V0806, Suspicious_GEN.F47V0429 |
The detection percentage is based on that I've gathered 275 scan results for the Mezaa files. 16 of these scan results 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 has been done on certificates with the following serial numbers: