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  3. W32.Mytob.CF@mm

W32.Mytob.CF@mm

Risk Level 2: Low

Discovered:
May 15, 2005
Updated:
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]
Type:
Worm
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP


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 May 15, 2005
  • Initial Daily Certified version May 15, 2005
  • Latest Daily Certified version May 15, 2005
  • Initial Weekly Certified release date May 16, 2005
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment

Wild

  • Wild Level: Low
  • Number of Infections: 0 - 49
  • Number of Sites: 0 - 2
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Moderate

Damage

  • Damage Level: Medium

Distribution

  • Distribution Level: High
Writeup By: Kaoru Hayashi

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