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


Risk Level 2: Low

May 15, 2005
February 13, 2007 12:38:50 PM
Also Known As:
Win32.Mytob.DA [Computer Assoc, Net-Worm.Win32.Mytob.t [Kasper, W32/Mytob.gen@MM [McAfee], W32/Mytob-EM [Sophos], WORM_MYTOB.EM [Trend Micro]
Systems Affected:

W32.Mytob.CF@mm is a mass-mailing worm that uses its own SMTP engine to send an email to addresses that it gathers from the compromised computer. The worm also opens a back door and spreads through the network by exploiting the Microsoft Windows DCOM RPC Interface Buffer Overrun Vulnerability (described in Microsoft Security Bulletin MS03-026) and the Microsoft Windows Local Security Authority Service Remote Buffer Overflow (as described in Microsoft Security Bulletin MS04-011).

Antivirus Protection Dates

  • Initial Rapid Release version May 15, 2005
  • Latest Rapid Release version October 27, 2017 revision 055
  • Initial Daily Certified version May 15, 2005
  • Latest Daily Certified version October 28, 2017 revision 002
  • Initial Weekly Certified release date May 16, 2005
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Kaoru Hayashi

Search Threats

Search by name
Example: W32.Beagle.AG@mm
STAR Antimalware Protection Technologies
2016 Internet Security Threat Report, Volume 21
  • Twitter
  • Facebook
  • LinkedIn
  • Google+
  • YouTube