Encyclopedia entry: Trojan:Win32/Oficla.E - Learn more about malware - Microsoft Malware Protection Center
This is a backdoor Trojan http://www.threatexpert.com/report.a...6ccf3829412ff1
Warning! Backdoor Trojans
These are the most dangerous, and most widespread, type of Trojan.
Backdoor Trojans provide the author or ‘master’ of the Trojan with remote ‘administration’ of victim machines. Unlike legitimate remote administration utilities, they install, launch and run invisibly, without the consent or knowledge of the user. Once installed, backdoor Trojans can be instructed to send, receive, execute and delete files, harvest confidential data from the computer, log activity on the computer and more.
If your computer was used for online banking or has credit card information on it, all passwords should be changed immediately to include those used for email, eBay and forums.
You should consider them to be compromised.
They should be changed by using a different computer and not the infected one, if not an attacker may get the new passwords and transaction information.
Banking and credit card institutions should be notified of the possible security breech.
More info can be found below:
How Do I Handle Possible Identify Theft, Internet Fraud and CC Fraud?
When should I re-format? How should I reinstall?
If you choose to format and reinstall see this link for instructions:
Though the Trojans have been identified there is no way to be sure your computer can ever again be trusted. Many experts in the security community believe that once infected with this type of Trojan, the best course of action would be a reformat and reinstall of the OS.
As already stated, we can in no way guarantee your computer to be trustworthy again.
If you decide to reformat, you should still download the protection on the newly formatted PC, or else you will have a high chance of reinfection.