W32.Netsky.N@mm

W32.Netsky.N@mm is a mass-mailing worm that uses its own SMTP engine to send itself to the email addresses it finds when scanning the hard drives and mapped drives.

The "sender" of the email is spoofed, and its subject, message body, and attachment vary. The attachment has a .pif extension.

This threat is compressed with tELock.

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Note: The worm has an MD5 hash value of 0xDD4D58534FA472E4735A532D15A6547F.

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Protection

• Initial Rapid Release version March 17, 2004
• Latest Rapid Release version August 20, 2008 revision 017
• Initial Daily Certified version March 17, 2004
• Latest Daily Certified version January 20, 2009 revision 048
• Initial Weekly Certified release date March 17, 2004

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

Distribution

• Distribution Level: High