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Microsoft Security Intelligence
Published Jun 16, 2005 | Updated Apr 16, 2011


Detected by Microsoft Defender Antivirus

Aliases: WORM_BAGZ.GEN (Trend Micro) W32/Bagz.gen@MM (McAfee) W32.Bagz@mm (Symantec)


Win32/Bagz is a family of mass-mailing worms that targets certain versions of Microsoft Windows. The worm spreads as an e-mail attachment and runs when the user opens the attachment. It can download and run other malicious files from a server.
To detect and remove this threat and other malicious software that may be installed in your computer, run a full-system scan with an up-to-date antivirus product such as the following:
For more information on antivirus software, see
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