There have been several Reports of a strain of Zeus dubbed "Kneber". The Zeus Exploit Toolkit is often used in campaigns that have no specific target. The goal is often to infect as many systems as possible. This strain is reported to harvest personal information from the victim that attackers can use for financial gain.
Customers are advised to ensure that Anti-Virus Products are up-to-date. symantec detects this threat as Trojan.Zbot.
Write-Up for Trojan.Zbot: http://securityresponse.symantec.com/security_response/writeup.jsp?docid=2010-011016-3514-99.
Blog: Zeus, King of the Underground Crimeware Toolkits.
Blog: “Kneber” = Zeus.
[Edit: Fixed Posting Error]