W32.Netsky.W@mm

W32.Netsky.W@mm is a minor variant of W32.Netsky.N@mm. This variant is also 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 .exe, .pif, or .scr as extension. The worm may also send its zipped copy as attachment.

This threat is compressed with UPX.

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Note:

• The worm has an MD5 hash value of 0XE6D771C24E8DBAF9543851E893C3E304
• This threat may be detected as W32.Netsky.gen@mm with defintions prior to 4/17/2004.

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Protection

• Initial Rapid Release version April 17, 2004
• Latest Rapid Release version January 19, 2009 revision 039
• Initial Daily Certified version April 17, 2004
• Latest Daily Certified version January 19, 2009 revision 052
• Initial Weekly Certified release date April 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: Moderate

Damage

• Damage Level: Medium

Distribution

• Distribution Level: High