1. Symantec/
  2. Security Response/
  3. W32.Mytob@mm


Risk Level 2: Low

February 26, 2005
February 13, 2007 12:34:14 PM
Also Known As:
Win32.Mytob.B [Computer Associ, Mytob.A [F-Secure], Net-Worm.Win32.Mytob.a [Kasper, W32/Mydoom.bg@MM [McAfee], W32/Mytob-A [Sophos], WORM_MYTOB.A [Trend Micro]
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

W32.Mytob.@mm is a mass-mailing worm that uses it own SMTP engine to send an email to addresses that it gathers from the Windows Address Book on the compromised computer. The worm also has the ability to open a back door and spread through the network by exploiting vulnerabilities.

Antivirus Protection Dates

  • Initial Rapid Release version February 26, 2005
  • Latest Rapid Release version October 25, 2016 revision 016
  • Initial Daily Certified version February 26, 2005 revision 002
  • Latest Daily Certified version October 25, 2016 revision 019
  • Initial Weekly Certified release date February 27, 2005
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Takayoshi Nakayama

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STAR Antimalware Protection Technologies
2016 Internet Security Threat Report, Volume 21
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