Trojan.Linkoptimizer.B

Trojan.Linkoptimizer.B is a generic detection for a family of Trojan horse programs that download dialer components, display pop-up advertisements and attempt to prevent removal by blocking security-related applications.

It has been reported that variants of Trojan.Linkoptimizer.B may be installed by visiting several different malicious Web sites while making legitimate searches on some popular search engines.

The initial domains returned by search engines may redirect users to other .com domains with random names which host different browser exploits.

For further information, please check the following blog posts:

• Gromozon Is “Live” (Just in Italy)
• Gromozon Is “Live” - Update

Protection

• Initial Rapid Release version March 28, 2007
• Latest Rapid Release version November 18, 2009 revision 055
• Initial Daily Certified version March 28, 2007
• Latest Daily Certified version November 19, 2009 revision 004
• Initial Weekly Certified release date March 28, 2007

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
• Compromises Security Settings: Prevents removal by blocking some security-related programs.

Distribution

• Distribution Level: Low