W32.Yaha@mm

W32.Yaha@mm is a mass-mailer that sends itself to all the email addresses it finds in the Windows address book and in the files with the extension of .ht*.
This worm copies itself to the files, C:\Recycled\Msscra.exe and C:\Recycled\Msmdm.exe.

Protection

• Initial Rapid Release version February 19, 2002
• Latest Rapid Release version January 22, 2010 revision 041
• Initial Daily Certified version February 19, 2002
• Latest Daily Certified version January 22, 2010 revision 048
• Initial Weekly Certified release date February 20, 2002

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment

Wild

• Wild Level: Low
• Number of Infections: 50 - 999
• Number of Sites: More than 10
• Geographical Distribution: Low
• Threat Containment: Easy
• Removal: Moderate

Damage

• Damage Level: Low

Distribution

• Distribution Level: High