W32.Yaha@mm

Risk Level 2: Low

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Discovered:: February 15, 2002
Updated:: February 13, 2007 11:55:57 AM
Type:: Worm

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.

Antivirus Protection Dates

Initial Rapid Release version February 19, 2002
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version February 19, 2002
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date February 20, 2002

Click 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

Writeup By: Douglas Knowles

Technical Details

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Internet Security Threat Report, Volume 16