W32.Nimda.B@mm

W32.Nimda.B@mm is a variant of W32.Nimda.A@mm. This variant has the same functionality as the .A variant. However, it has been compressed with a run-time compressor.





For information on .enc detections, read the article, "What is an .enc detection?"

For additional information, read the Microsoft TechNet article, Information on the "Nimda" Worm.

Protection

• Initial Rapid Release version October 10, 2001
• Latest Rapid Release version October 10, 2001
• Initial Daily Certified version October 10, 2001
• Latest Daily Certified version October 10, 2001
• Initial Weekly Certified release date October 10, 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: 0 - 49
• Number of Sites: 0 - 2
• Geographical Distribution: Low
• Threat Containment: Easy
• Removal: Moderate

Damage

• Damage Level: Medium

Distribution

• Distribution Level: High