Infostealer.Yohokie

Infostealer.Yohokie is a proof of concept Trojan horse that exploits a vulnerability in the Yahoo! Mail service. It arrives as an HTML email that, if opened, will send the victim's Yahoo session cookie to a predetermined Web site. This allows the attacker to then hijack the victim's Yahoo session and take full control over their Yahoo! Mail account.

Protection

• Initial Rapid Release version June 15, 2006
• Latest Rapid Release version July 12, 2008 revision 018
• Initial Daily Certified version June 15, 2006
• Latest Daily Certified version July 12, 2008 revision 019
• Initial Weekly Certified release date June 21, 2006

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: Low