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


Risk Level 2: Low

April 3, 2005
February 13, 2007 12:36:16 PM
Also Known As:
Win32.Mytob.AA [Computer Assoc, Net-Worm.Win32.Mytob.c [Kasper, W32/Mytob.c@MM [McAfee], W32/Mytob-C [Sophos], WORM_MYTOB.V [Trend Micro]
Systems Affected:

W32.Mytob.V@mm is a mass-mailing worm that uses it own SMTP engine to send an email to addresses that it gathers from files on the compromised computer. The email has a variable subject and attachment name. The attachment will have a .bat, .cmd, .doc, .exe, .htm, .pif, .scr, .tmp, .txt, or .zip file extension.

The worm also has the ability to open a back door and spreads through the network by exploiting common system vulnerabilities.

Antivirus Protection Dates

  • Initial Rapid Release version April 4, 2005
  • Latest Rapid Release version August 8, 2016 revision 023
  • Initial Daily Certified version April 4, 2005
  • Latest Daily Certified version August 9, 2016 revision 001
  • Initial Weekly Certified release date April 6, 2005
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Candid Wueest

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