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Microsoft Security Intelligence
Published Mar 21, 2012 | Updated Sep 15, 2017


Detected by Microsoft Defender Antivirus

Aliases: TR/Medfos.A.213 (Avira) (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 "" and "".

To detect and remove this threat and other malicious software that may be installed on your computer, run a full-system scan with an appropriate, up-to-date, security solution. The following Microsoft products detect and remove this threat:

For more information on antivirus software, see

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