W32.Naked@mm

W32.Naked@mm is a mass mailing worm that disguises itself as flash movie. The attachment is named NakedWife.exe. This worm, after it has attempted to email everyone in the Microsoft Outlook address book, will attempt to delete several system files. This will leave the system unusable, requiring a re-install.

NOTE: This worm was previously detected as W32.HLLW.JibJab@mm.



Security Response believes that this worm originated in Brazil.

Protection

• Initial Rapid Release version March 6, 2001
• Latest Rapid Release version August 20, 2008 revision 017
• Initial Daily Certified version March 6, 2001
• Latest Daily Certified version January 20, 2009 revision 048
• Initial Weekly Certified release date March 6, 2001

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: 3 - 9
• Geographical Distribution: Medium
• Threat Containment: Moderate
• Removal: Easy

Damage

• Damage Level: High

Distribution

• Distribution Level: Medium