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Microsoft Security Intelligence
Published Mar 10, 2005 | Updated Sep 15, 2017


Detected by Microsoft Defender Antivirus

Aliases: W32.Mimail (Symantec) W32/Mimail@MM (McAfee) WORM_MIMAIL (Trend Micro) W32/Mimail (Sophos)


Windows Defender Antivirus detects and removes this threat.
W32/Mimail is a family of mass-mailing and network worms. The variants target several versions of Microsoft Windows. Some Mimail variants spread through email attachments. Some target PCs that do not have Microsoft Security Bulletins MS02-015 and MS03-014 installed.  Some variants spread through peer-to-peer networks. Some variants gather and transmit user account numbers and passwords. Some variants launch denial of service (DoS) attacks against certain Web sites.

Use the following free Microsoft software to detect and remove this threat:

You should also run a full scan. A full scan might find hidden malware.

Get more help

You can also visit our advanced troubleshooting page or search the Microsoft virus and malware community for more help.

If you’re using Windows XP, see our Windows XP end of support page.

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