Win64/Sirefef.W - Microsoft Security Essentials detects it, quarantines it, then the system detects a critical error and shuts down within a minute

[kentares]

Good afternoon,

I have read several forum postings on this particular infection; many posters have skipped attaching a HiJackThis log file. Please let me know if you need a HiJackThis log file. Attached is the FRST64 log.

Thank you for your time,

kentares

FRST.txt

[kentares]

Please see the attached HiJackThis! log.

Thank you,

kentares

hijackthis.log

[Maniac]

Hello kentares and ! My name is Maniac and I will be glad to help you solve your malware problem.

Please note:

• If you are a paying customer, you have the privilege to contact the help desk at support@malwarebytes.org or here (http://helpdesk.malwarebytes.org/home). If you choose this option to get help, please let me know.
  
• I recommend you to keep the instructions I will be giving you so that they are available to you at any time. You can save them in a text file or print them.
  
• Make sure you read all of the instructions and fixes thoroughly before continuing with them.
  
• Follow my instructions strictly and don’t hesitate to stop and ask me if you have any questions.
  
• Post your log files, don't attach them. Every log file should be copy/pasted in your next reply.
  

BACKDOOR WARNING

One or more of the identified infections is known to use a backdoor.

This allows hackers to remotely control your computer, steal critical system information and download and execute files.

I would advice 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 infection 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:

Help: I Got Hacked. Now What Do I Do?

Help: I Got Hacked. Now What Do I Do? Part II

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. If you decide to go through with the cleanup, please proceed with the following steps.

Download OTL to your Desktop

• Double click on the icon to run it. Make sure all other windows are closed and to let it run uninterrupted.
  
• Please tick the Scan All users. Next, click the Quick Scan button. The scan wont take long.
  
  • When the scan completes, it will open two notepad windows. OTL.Txt and Extras.Txt. These are saved in the same location as OTL.
    
  • Please copy (Edit->Select All, Edit->Copy) the contents of these files, one at a time and post them in your topic.
    

[kentares]

Dear Maniac,

Thank you for the quick reply. I think I will start backing the computer up and do a clean installation.

Thank you for your time; regarding this matter,

kentares

[Maniac]

You're welcome!

Here some malware prevetions:

http://forums.malwarebytes.org/index.php?showtopic=104379&pid=515983&st=0entry515983

Safe surfing!

[LDTate]

Glad we could help.

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