MBR Infection?

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Hi, Avast just reported my disk 0 is infected by this MBR:Wistler-D [Rtk]
and cannot fix (i choose Auto Fix)

i have searched some topic on internet seems some similar thing name Whistler A Virus
is it the same?

i use ASWMBR.exe to scan my PC
but during the scan, the program crashed...

what can i do now?thanks

[Pondus]

Logs to assist in cleaning malware https://forum.avast.com/index.php?topic=53253.0
attach Malwarebytes and Farbar Recovery Scan Tool logs here for reciving help

[essexboy]

Hi there prior to running FRST

Download the latest version of TDSSKiller from here and save it to your Desktop.
 
 

• Doubleclick on TDSSKiller.exe to run the application
  
  
  
• Then click on Change parameters.
   
  
   
  
• Check the boxes beside Verify Driver Digital Signature, Detect TDLFS file system  and Use KSN to scan objects , then click OK.
   
  
• Click the Start Scan button.
   
   
  
• If a suspicious object is detected, the default action will be Skip, click on Continue.
   
  
   
  
• If malicious objects are found, they will show in the Scan results and offer three (3) options.
• Ensure Cure is selected, then click Continue => Reboot now to finish the cleaning process.
  
  
• Get the report by selecting Reports

 

• Note: If Cure is not available, please choose Skip instead, do not choose Delete unless instructed.
  

Please attach its contents on your next reply.

THEN

Run FRST

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when i use TDSSKiller to cure the threat
it ask me to write standard boot code?
should i click yes?

here is the Log, thanks

[essexboy]

Click yes, I will now look at the other logs

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i click yes and reboot the computer
then i scan it again, seems like the threat is gone

2 log attached, TDSSBOOT is the report after reboot
Thanks

[essexboy]

How is the computer behaving now as the other logs looked OK

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How is the computer behaving now as the other logs looked OK

It seems like OK now
but i use Avast scan again, it found several MBR:Wistler-D [Rtk] threats in TDSS quarantine folder
should i fix them or just ignore them?

thank you 

[essexboy]

Quarantine is good ..  You can delete them when TDSSKiller has gone

Subject to no further problems   

I will remove my tools now and give some recommendations, but, I would like you to run for 24 hours or so and come back if you have any problems 

Now the best part of the day ----- Your log now appears clean  :thumbsup:

A good workman always cleans up after himself so..The following will implement some cleanup procedures as well as reset  System Restore points:

Remove tools

Download and run Delfix
Select the options as shown



: Keep Java Updated :

WARNING: Java is the #1 exploited program at this time. The Department of Homeland Security recommends that computer users disable Java
See this article

I would recommend that you completely uninstall Java unless you need it to run an important software.
In that instance I would recommend that you disable Java in your browsers until you need it for that software and then enable it. (See How to diasble Java in your web browser and How to unplug Java from the browser)

If you do need to keep Java then download JavaRa
Run the programme and select  Remove Java Runtime.  Uninstall all versions of Java present
Once done then run it again and select Update Java runtime > Download and install Latest version



Now that you are clean, to help protect your computer in the future I recommend that you get the following free programmes:

CryptoPrevent install this programme to lock down and prevent crypto ransome ware



Malwarebytes.

Update and run weekly to keep your system clean

Unchecky

Click on the link above to be taken to Unchecky.com
click the very large Download button.
click Save
Click Open folder
Right click on the Unchecky_setup and choose to Run as Administrator
Once open click the Install button.
Then click on Finish
Unchecky is now installed and will help you keep unwanted check boxes unchecked, this is a fire and forget programme 

It is critical to have both a firewall and anti virus to protect your system and to keep them updated.

To learn more about how to protect yourself while on the internet read this little guide  Best security practices Keep safe  :wave:

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OK~

Thank you very much!

[essexboy]

My pleasure