Trojan.Lhdropper

Trojan.Lhdropper is a Trojan horse that drops malicious files by exploiting a vulnerability in Lhaca, a freeware application that can compress and decompress LZH archive files.

Further Reading:
To find out more about this threat, please read the Symantec Security Response blog entry Beware of LZH

Protection

• Initial Rapid Release version June 25, 2007 revision 003
• Latest Rapid Release version April 12, 2009 revision 049
• Initial Daily Certified version June 25, 2007 revision 018
• Latest Daily Certified version June 25, 2007 revision 003
• Initial Weekly Certified release date June 27, 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
• Payload: Drops malicious files by exploiting a vulnerability in Lhaca application.

Distribution

• Distribution Level: Low