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Laptop infected with W32.Rontokbro@mm


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11 replies to this topic

#1 adeeba222

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Posted 29 January 2009 - 10:02 PM

Hello...

I only got my laptop a few months ago. I have Norton Internet Security. It has detected w32.rontokbro@mm on my computer several times over the past couple days.

Every time it does, i apply the recommended actions (i.e. "fix") and restart when prompted, but then it finds the same thrreat agian in minutes. I can't seem to get it to go away.

I am a university student and i need my laptop for my schoolwork, so any help would be greatly appreciated.

Thanks!

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#2 garmanma

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Posted 30 January 2009 - 05:07 PM

The process of cleaning your computer may require you to temporarily disable some security programs. If you are using SpyBot Search and Destroy, please refer to Note 2 at the bottom of this page.

Please download Malwarebytes Anti-Malware and save it to your desktop.
alternate download link 1
alternate download link 2
  • Make sure you are connected to the Internet.
  • Double-click on mbam-setup.exe to install the application.
  • When the installation begins, follow the prompts and do not make any changes to default settings.
  • When installation has finished, make sure you leave both of these checked:
    • Update Malwarebytes' Anti-Malware
    • Launch Malwarebytes' Anti-Malware
  • Then click Finish.
MBAM will automatically start and you will be asked to update the program before performing a scan.
  • If an update is found, the program will automatically update itself.
  • Press the OK button to close that box and continue.
  • If you encounter any problems while downloading the updates, manually download them from here and just double-click on mbam-rules.exe to install.
On the Scanner tab:
  • Make sure the "Perform Quick Scan" option is selected.
  • Then click on the Scan button.
  • If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
  • The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
  • When the scan is finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
  • Click OK to close the message box and continue with the removal process.
Back at the main Scanner screen:
  • Click on the Show Results button to see a list of any malware that was found.
  • Make sure that everything is checked, and click Remove Selected.
  • When removal is completed, a log report will open in Notepad.
  • The log is automatically saved and can be viewed by clicking the Logs tab in MBAM.
  • Copy and paste the contents of that report in your next reply and exit MBAM.
Note:
-- If MBAM encounters a file that is difficult to remove, you may be asked to reboot your computer so it can proceed with the disinfection process. Regardless if prompted to restart the computer or not, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.

Note 2:
-- MBAM may make changes to your registry as part of its disinfection routine. If you're using other security programs that detect registry changes (like Spybot's Teatimer), they may interfere with the fix or alert you after scanning with MBAM. Please disable such programs until disinfection is complete or permit them to allow the changes. To disable these programs, please view this topic: How To Temporarily Disable Your Anti-virus, Firewall And Anti-malware Programs
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why won't my laptop work?

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#3 adeeba222

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Posted 31 January 2009 - 06:41 PM

hi garmanma

I will follow all your steps as soon as i can (my internet connection is a little unreliable), but i have one concern. I am 99.9% certain i got this virus from my flash drive which i recenty used in a school computer. I have since reformatted the flash drive (normal right click then format in My Computer), but this was done on the infected laptop. Is that good enough?

I want to make sure i don't clean up my laptop nicely, then re-infect it the next time i use my flash drive.

Thank you so much for your help!!

#4 garmanma

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Posted 31 January 2009 - 08:24 PM

After we sure you're clean and before you use the thumb drive we'll run Flash Drive Disinfector
-----------------------------

Flash_Disinfector.exe by sUBs and save it to your desktop.
  • Double-click Flash_Disinfector.exe to run it and follow any prompts that may appear.
  • The utility may ask you to insert your flash drive and/or other removable drives. Please do so and allow the utility to clean up those drives as well.
  • Hold down the Shift key when inserting the drive until Windows detects it to keep autorun.inf from executing if it is present.
  • Wait until it has finished scanning and then exit the program.
  • Reboot your computer when done.
Note: As part of its routine, Flash_Disinfector will create a hidden folder named autorun.inf in each partition and every USB drive that was plugged in when you ran it. Do not delete this folder...it will help protect your drives from future infection by keeping the autorun file from being installed on the root drive and running other malicious files.
Mark
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why won't my laptop work?

Having grandkids is God's way of giving you a 2nd chance because you were too busy working your butt off the 1st time around
Do not send me PMs with problems that should be posted in the forums. Keep it in the forums, so everyone benefits
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#5 adeeba222

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Posted 04 February 2009 - 10:01 AM

hi again

I am really sorry this issue has been dragging on a while now. My laptop restarts every time i try to access this forum, and so i couldn't post a reply. Just one more dumb question (hope it's not too dumb).

I normally connect to the internet using a data sim cell phone. I connect the phone to the computer via USB. Can this cause any problems for me? My apologies for my ignorance lol.

Thanks again!!

#6 adeeba222

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Posted 06 February 2009 - 04:54 PM

New problem: my laptop restarts every time i try to download malwarebytes. I'm going to try and download the file on another computer and email it to myself, but i'm not sure that'll work.

Confused at this point...

#7 adeeba222

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Posted 07 February 2009 - 03:46 PM

okay so i can't seem to get through downloading malwarebytes without my laptop restarting. is there anything else i could try instead? the stupid computer keeps restarting.


P.S. i've noticed an HTML file named about.Brontok.A in my MY Pictures folder. i haven't opened it though.

#8 garmanma

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Posted 07 February 2009 - 06:23 PM

Brontok.A is a worm that is usually transfered as an email attachment
Here is a free tool from Bitdefender that is supposed to remove it if you can figure out how to get downloaded to your machine:
http://www.bitdefender.com/VIRUS-157247-en...ontok.A@mm.html

Edited by garmanma, 07 February 2009 - 06:24 PM.

Mark
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why won't my laptop work?

Having grandkids is God's way of giving you a 2nd chance because you were too busy working your butt off the 1st time around
Do not send me PMs with problems that should be posted in the forums. Keep it in the forums, so everyone benefits
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#9 adeeba222

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Posted 07 February 2009 - 10:33 PM

hi again

i'm currently running the bitdefender online scanner, but i don't know if i'll be able to successfully use the removal tool.

if all else fails, i'll re-install vista, but first i would like to burn my important files on a dvd so i'll be able to replace them on my hard drive. but would this be safe, or would i end up replacing the worm as well?

thanks again

#10 garmanma

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Posted 08 February 2009 - 12:50 PM

There will always be that risk
I would scan each folder when I move them
Mark
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why won't my laptop work?

Having grandkids is God's way of giving you a 2nd chance because you were too busy working your butt off the 1st time around
Do not send me PMs with problems that should be posted in the forums. Keep it in the forums, so everyone benefits
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#11 adeeba222

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Posted 08 February 2009 - 04:26 PM

this is pretty frustrating.

i tried using the bitdefender scanner, but it said 'scan failed' twice now. i know symantec has instructions on their website for manual removal of the worm, but the first step is to disable system restore, which i tried to do but couldn't. i went to system>system protection and realized that the checkbox for my hard drive wasn't faded out, but i couldn't uncheck it either.

the symantec insructions also seem geared to XP rather than vista, though i dunno if this makes any difference. i think i might try to follow symantec's method without disabling system restore and hope it works.


P.S. one point as regards your suggestion to scan every folder before backing up. i am almost certain i got this virus from a school computer i used my flash drive on that seemed to have the same problems i have now. i made sure i scanned my flash drive with norton internet security before opening any files on it when i got home, and the scan came up clean. but the virus must have still been there cuz here we are in this mess huh. so i'm wondering if scanning before backing up may still let the worm slip through.


hoping for the best...

#12 garmanma

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Posted 09 February 2009 - 06:25 PM

This is the tool we use for infected flash drives
--------------------------------------

Please download Flash_Disinfector.exe by sUBs and save it to your desktop.
  • Double-click Flash_Disinfector.exe to run it and follow any prompts that may appear.
  • The utility may ask you to insert your flash drive and/or other removable drives. Please do so and allow the utility to clean up those drives as well.
  • Hold down the Shift key when inserting the drive until Windows detects it to keep autorun.inf from executing if it is present.
  • Wait until it has finished scanning and then exit the program.
  • Reboot your computer when done.
Note: As part of its routine, Flash_Disinfector will create a hidden folder named autorun.inf in each partition and every USB drive that was plugged in when you ran it. Do not delete this folder...it will help protect your drives from future infection by keeping the autorun file from being installed on the root drive and running other malicious files.
Mark
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why won't my laptop work?

Having grandkids is God's way of giving you a 2nd chance because you were too busy working your butt off the 1st time around
Do not send me PMs with problems that should be posted in the forums. Keep it in the forums, so everyone benefits
Become a BleepingComputer fan: Facebook and Twitter




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