Hello you have been hit with a backdoor malware W32/Sdbot-XK
. ASome advice first on these backdoor /bots. a.exe is an Email worm.
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
I would counsel you to disconnect this PC from the Internet immediately. If you do any banking or other financial transactions on the PC or if it should contain any other sensitive information, please get to a known clean computer and change all passwords where applicable, and it would be wise to contact those same financial institutions to apprise them of your situation.
Though the trojan has been identified and can be killed, because of it's backdoor functionality, your PC is very likely compromised and 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. Please read these for more information:How Do I Handle Possible Identify Theft, Internet Fraud and CC Fraud?When Should I Format, How Should I Reinstall
We can still clean this machine but I can't guarantee that it will be 100% secure afterwards. Let me know what you decide to do.
The first removal step is
Download this Utility
and save it to your Desktop.
Double-click the Utility to run it and and let it finish.
When it states Finished! Press any key to exit
, press any key to close the program.
It will save a .txt
file to your desktop automatically. Double-click on the Win32kDiag.txt
file that is located on your Desktop and post the entire contents of that log as part of the reply in the topic you will create below..