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  3. W32.Mytob.ED@mm


Risk Level 2: Low

June 11, 2005
February 13, 2007 12:40:09 PM
Also Known As:
Win32.Mytob.EO [Computer Assoc, Net-Worm.Win32.Mytob.bk [Kaspe, W32/Mytob.ch@MM [McAfee], W32/Mytob-AS [Sophos], WORM_MYTOB.EE [Trend Micro]
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

W32.Mytob.ED@mm is a mass-mailing worm that opens a back door and lowers security settings on the compromised computer.

Antivirus Protection Dates

  • Initial Rapid Release version June 11, 2005
  • Latest Rapid Release version June 11, 2005
  • Initial Daily Certified version June 11, 2005
  • Latest Daily Certified version June 11, 2005
  • Initial Weekly Certified release date June 15, 2005
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment


  • Wild Level: Low
  • Number of Infections: 0 - 49
  • Number of Sites: More than 10
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Moderate


  • Damage Level: Medium


  • Distribution Level: High
Note: On May 14, 2015, modifications will be made to the threat write-ups to streamline the content. The Threat Assessment section will no longer be published as this section is no longer relevant to today's threat landscape. The Risk Level will continue to be the main threat risk assessment indicator.
Writeup By: Fergal Ladley

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