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Microsoft Security Intelligence
Published Sep 21, 2005 | Updated Aug 15, 2011


Detected by Microsoft Defender Antivirus

Aliases: W32/MyWife (McAfee) Win32.Blackmal (CA) W32.Blackmal@mm (Symantec) WORM_BLUEWORM (Trend Micro) W32/Mywife (Panda) I-Worm.Nyxem (Kaspersky) W32/Nyxem (Sophos)


Win32/Mywife is a family of mass-mailing network worms that targets certain versions of Microsoft Windows. The worm spreads through e-mail attachments and writeable network shares.
Recovering from recurring infections on a network
The following additional steps may need to be taken to completely remove this threat from an infected network, and to stop infections from recurring from this and other similar types of network-spreading malware:
  1. Ensure that an antivirus product is installed on ALL computers connected to the network that can access or host shares.
  2. Ensure that all available network shares are scanned with an up-to-date antivirus product.
  3. Restrict permissions as appropriate for network shares on your network. For more information on simple access control, please see:
  4. Remove any unnecessary network shares or mapped drives.
Note: Additionally it may be necessary to temporarily change the permission on network shares to read-only until the disinfection process is complete.

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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