Worms/Viruses/Trojans    
Bloodhound.Exploit.340 Mon, Jul 19 2010
Severity 
Aliases: 
Infects: [Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows Vista, Windows XP]
Description:
Bloodhound.Exploit.340 is a heuristic detection for files attempting to exploit the Microsoft Access ActiveX Control Multiple Instantiation Remote Code Execution Vulnerability.

Impact:
It remotely executes arbitrary code on the vulnerable system.

Propagation:
Not Available.

For Further Information:
http://www.symantec.com/norton/security_response/writeup.jsp?docid=2010-071913-3524-99
Solution:
Disable System Restore (Windows Me/XP).
Update the virus definitions of your antivirus product.
Run a full system scan.