Infostealer.Daonol

Infostealer.Daonol is a Trojan horse that redirects network traffic and attempts to steal FTP account information from the compromised computer.

Infostealer.Daonol is downloaded from gumblar.cn or martuz.cn as a result of successful exploit attempts. For more information, please refer to the following blogs:
Viral Web Infections using Malware? Gumblar is, Unfortunately, Just Another Day on the Web
Malware Whac-a-Mole: Gumblar is down, Martuz is up. Next?!

Detection has been added for the injected scripts that point to gumblar.cn and martuz.cn as Trojan.Malscript!html.

Protection

• Initial Rapid Release version May 18, 2009 revision 040
• Latest Rapid Release version January 24, 2010 revision 039
• Initial Daily Certified version May 19, 2009 revision 002
• Latest Daily Certified version January 25, 2010 revision 003
• Initial Weekly Certified release date May 20, 2009

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
• Releases Confidential Info: Steals FTP account information
• Compromises Security Settings: Redirects network traffic

Distribution

• Distribution Level: Low