Overall Risk Level: 
A popup message indicating “Trojan.Mdropper.AC – Trojan Found!” is a fake alerts being generated by a rogue program Personal Antivirus. The full message reads:
Trojan.Mdropper.AC – Trojan Found!
Trojan.Mdropper.AC is a trojan horse that may exploit the Microsoft Excel Unspecified Remote Code Execution Vulnerability (BID 33870). It may also attempt to download files on to the compromised computer.
Alias: -
Damage Level: Low
Systems Affected: Windows
Screenshot Image:

Automatic Removal of “Trojan.Mdropper.AC – Trojan Found!”
1. Use MalwareBytes AntiMalware to remove Trojan.Mdropper.AC – Trojan Found!
Any Response?