Microsoft Malware Protection Center (MMPC) is now Windows Defender Security Intelligence (WDSI). Watch out for even more info about threats and protecting you and your Windows computer.
Alert level: Severe Detected with Windows Defender Antivirus
Also detected as: TR/Medfos.A.213 (Avira) Trojan.Win32.Midhos.cn (Kaspersky) Generic Downloader.nb (McAfee) Mal/EncPk-ZC (Sophos)
Trojan:Win32/Medfos.A is a trojan that attempts to download arbitrary files from websites such as "greatfilehosting.com" and "midifilehosting.com".