See here the press release by the AV-developer who found it:
Q u o t e:
MicroWorld experts have found that, apart from spreading via emails and P2P sharing, this Trojan slips into user computers via pop-up ads being displayed on many dubious gaming websites, through a vulnerability in Internet Explorer. Reports from some corners claim that the controversial Rootkit components in some Music CDs were also exploited in advancing this Trojan.
Some security tips:
Browsing / Emailing
If you’re using Internet Explorer or Outlook, please consider switching to Firefox and Thunderbird, both available from http://www.mozilla.com
(IE and Outlook are both heavily patched programs of several years old and are comparable with Emmenthaler cheese due to their holes.)
It’s very handy to have a firewall installed: free ones for personal use are:
Agnitium Outpost Free: http://www.agnitum.com/products/outpostfree/download.php
Zonelabs’ ZoneAlarm Free: http://www.zonelabs.com/store/content/company/products/znalm/freeDownload2.jsp
The Windows XP firewall as of SP2 is reasonable, but not exactly rocket science. I recommend having one of those above. If you’re new to this “firewall thing”, I recommend asking help from someone who knows how to handle them, or read the help/tutorial files well. (Firewalls are quite hard to configure.)
Again: Free for personal use!
Avira Antivir: http://www.free-av.com/
Alwil Avast: http://avast.com/eng/download-avast-home.html
Both are good free anti-virus programs, it’s recommended to update the virus-database frequently (Antivir has a daily update by default).
Two Anti-spyware programs which are very effective together handy for security/privacy: