MSIL.Yakizake

MSIL.Yakizake is a mass-mailing worm that runs within the .NET or Mono framework and requires that Thunderbird is installed.

Protection

• Initial Rapid Release version September 26, 2007 revision 036
• Latest Rapid Release version June 28, 2008 revision 022
• Initial Daily Certified version September 27, 2007 revision 002
• Latest Daily Certified version January 20, 2009 revision 048
• Initial Weekly Certified release date October 3, 2007

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: Easy

Damage

• Damage Level: Low
• Large Scale E-mailing: Sends email to every address in the Thunderbird address book.

Distribution

• Distribution Level: Low