Are you still with us? Please advise if you still need assistance, or if you have resolved this ?
Sirefef is a family of severe malware infections !
This system likely has some serious backdoor trojans, spyware, and likely, a rookit.
This is a point where you need to decide about whether to make a clean start.
According to the information provided in logs, one or more of the identified infections is a backdoor trojan. This allows hackers to remotely control your computer, steal critical system information, and download and execute files.
You are strongly advised to do the following immediately.
1. Contact your banks, credit card companies, financial institutions and inform them that you may be a victim of identity theft and ask them to put a watch on your accounts or change all your account numbers.
2. From a clean computer, change ALL your online passwords -- for email, for banks, financial accounts, PayPal, eBay, online companies, any online forums or groups.
3. Do NOT change passwords or do any transactions while using the infected computer because the attacker will get the new passwords and transaction information.These trojans leave a backdoor open on the system that can allow a hacker total and complete access to your computer. (Remote access trojan) Hackers can operate your computer just as if they were sitting in front of it. Hackers can watch everything you are doing on the computer, play tricks, do screenshots, log passwords, start and stop programs.
* Take any other steps you think appropriate for an attempted identity theft.
You should also understand that once a system has been compromised by a Trojan backdoor, it can never really be trusted again unless you completely reformat the hard drives and reinstall Windows fresh. While we usually can successfully remove malware like this, we cannot guarantee that it is totally gone, and that your system is completely safe to use for future financial information and/or transactions. I would recommend that you do a full reformat and reinstall of Windows rather than clean the system.
I suggest that you backup important files and reinstall everything from scratch. There are so many changes that could have been done if that backdoor was used.
Here is some additional information: What Is A Backdoor Trojan? http://www.geekstogo.com/2007/10/03/what-is-a-backdoor-trojan
Danger: Remote Access Trojans http://www.microsoft.com/technet/security/alerts/info/virusrat.mspx
Consumers – Identity Theft http://www.ftc.gov/bcp/edu/microsites/idtheft/consumers/index.html
When should I re-format? How should I reinstall? http://www.dslreports.com/faq/10063
How Do I Handle Possible Identify Theft, Internet Fraud and CC Fraud? http://www.dslreports.com/faq/10451
Rootkits: The Obscure Hacker Attack http://www.microsoft.com/technet/community/columns/sectip/st1005.mspx
Help: I Got Hacked. Now What Do I Do? http://www.microsoft.com/technet/community/columns/secmgmt/sm0504.mspx
Help: I Got Hacked. Now What Do I Do? Part II http://www.microsoft.com/technet/community/columns/secmgmt/sm0704.mspx
Microsoft Says Recovery from Malware Becoming Impossible http://www.eweek.com/article2/0,1895,1945808,00.asp