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Infected with Trojan Win64:Sirefef-A [Trj]


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4 replies to this topic

#1 eugeneabenoit

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Posted 05 August 2012 - 06:42 PM

I've been infected with a Trojan Win64:Sirefef-A [Trj] that states its location as C:\Windows\Installer\....\8000000000.@ and the process C:\Windows\system32\services.exe. I have a free versions of Avast that keeps alerting me that its being found and moved to chest. Thank you in advance and I appreciate your help.

Eugene

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#2 CatByte

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Posted 06 August 2012 - 05:34 PM

Please do the following:

download Farbar Recovery Scan Tool and save it to a flash drive.

Plug the flashdrive into the infected PC.

Enter System Recovery Options.

To enter System Recovery Options from the Advanced Boot Options:
  • Restart the computer.
  • As soon as the BIOS is loaded begin tapping the F8 key until Advanced Boot Options appears.
  • Use the arrow keys to select the Repair your computer menu item.
  • Choose your language settings, and then click Next.
  • Select the operating system you want to repair, and then click Next.
  • Select your user account and click Next.
To enter System Recovery Options by using Windows installation disc:
  • Insert the installation disc.
  • Restart your computer.
  • If prompted, press any key to start Windows from the installation disc. If your computer is not configured to start from a CD or DVD, check your BIOS settings.
  • Click Repair your computer.
  • Choose your language settings, and then click Next.
  • Select the operating system you want to repair, and then click Next.
  • Select your user account an click Next.
On the System Recovery Options menu you will get the following options:
Startup Repair
System Restore
Windows Complete PC Restore
Windows Memory Diagnostic Tool
Command Prompt
[*]Select Command Prompt
[*]In the command window type in notepad and press Enter.
[*]The notepad opens. Under File menu select Open.
[*]Select "Computer" and find your flash drive letter and close the notepad.
[*]In the command window type e:\frst.exe (for x64 bit version type e:\frst64) and press Enter
Note: Replace letter e with the drive letter of your flash drive.
[*]The tool will start to run.
[*]When the tool opens click Yes to the disclaimer.
[*]Place a check next to List Drivers MD5 as well as the default check marks that are already there
[*]Press Scan button.
[*]FRST will let you know when the scan is complete and has written the FRST.txt to file, close out this message, then type the following into the search box:
services.exe
[*]now press the search button
[*]when the search is complete, search.txt will also be written to your USB
[*]type exit and reboot the computer normally
[*]please copy and paste both logs in your reply.(FRST.txt and Search.txt)[/list]

Microsoft MVP - 2010, 2011, 2012, 2013, 2014, 2015


#3 eugeneabenoit

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Posted 08 August 2012 - 06:16 PM

Thank you for the reply. This is a business computer, so before I run this system recovery I just want to be sure I wont lose any valuable data. Thanks again for help me out.

#4 CatByte

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Posted 08 August 2012 - 06:24 PM

do you have an IT department?

  • There may be restrictions and modifications installed on business machines that could be damaged or altered by the actions we take to remove Malware.
  • Any infection could jump terminals in a computer network.
  • There may also be legal issues regarding any loss of business data that I do not wish to deal with.
  • Some people who come here use their computers for work, and the computers may contain the patient records of a physician or the financial records of an accountant's clients or credit card and bank account information of their employer's customers.
  • There may be tremendous risks and legal liability for such users for not fully securing the computer. We will not know this unless we ask. We do not want to be accidentally putting those we help in vulnerable positions for law suits.
  • Business factors outweigh technical factors in making the reformat and reinstall decision. Sometimes friends give missing CDs or lack of expertise as a reason for not doing a reformat and reinstall.
  • The cost of replacing missing Windows XP and MS Office CDs and getting an Microsoft Certified Systems Engineer to come in for 3 hours to do the reinstall and apply all the critical updates, is trivial compared with the potential cost of a multi-million dollar lawsuit for breach of trust if confidential client or patient information is disclosed.
  • In specific situations where highly confidential information about others is on the computer, and a backdoor virus or trojan is found, we are helping people more by identifying that they have a backdoor trojan which puts them in a particularly vulnerable situation and sending them to seek local professional help from a Microsoft Certified Systems Engineer or Certified Information Systems Security Professional or Global Information Assurance Certification Certified Security Expert or Certified Computing Professional or Internet Service Provider than we would be trying to fully resolve their problems long distance.


If you are not in a situation where you can resolve this issue yourself, I will still assist you, but obviously cannot guarantee anything or be held liable for any issues arising from fixing a business machine.

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#5 CatByte

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Posted 16 August 2012 - 07:14 PM

Due to the lack of feedback, this topic is now closed.In the event you still have problems, please send me or any Moderator a Private Message and ask them to reopen this topic within the next 5 days. Please include a link to your topic in the Private Message. Thank you.

Microsoft MVP - 2010, 2011, 2012, 2013, 2014, 2015





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