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Mystery Trojan


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4 replies to this topic

#1 jimshady

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Posted 02 November 2007 - 12:09 PM

Hi All.

I'm running XP and getting a message from my anti virus when I start up, saying
BV:KillFiles-K[trj] detected in C:\start.bat

I did a search on that trojan and only got hits in Portuguese. I managed to work out that someone was suggesting using Killbox - but there were quite detailed instruction on what to do, and my Portuguese wasn't up to it.

Can anyone help?

Cheers.

jim

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#2 jimshady

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Posted 02 November 2007 - 12:25 PM

It actually says -
Sign of "BV:KillFiles-K[Trj]" has been found in "C:\start.bat" file.

jim

#3 quietman7

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Posted 02 November 2007 - 12:46 PM

What type of anti-virus are you using? Have you performed any anti-spyware scans? Have you tried doing your scans in "SAFE MODE"? Are you doing scans while logged into the "Administrator Account" or an "account with administrator privileges"?

You need to start there first. If rescanning in safe modes does not help, then do this:

Please download ATF Cleaner by Atribune & save it to your desktop. DO NOT use yet.
Please download Dr.Web CureIt & save it to your desktop. DO NOT perform a scan yet.

Reboot your computer in SAFE MODE" using the F8 method. To do this, restart your computer and after hearing your computer beep once during startup (but before the Windows icon appears) press the F8 key repeatedly. A menu will appear with several options. Use the arrow keys to navigate and select the option to run Windows in "Safe Mode".

Double-click ATF-Cleaner.exe to run the program.
  • Under Main "Select Files to Delete" choose: Select All.
  • Click the Empty Selected button.
  • If you use Firefox browser click Firefox at the top and choose: Select All
  • Click the Empty Selected button.
    If you would like to keep your saved passwords, please click No at the prompt.
  • If you use Opera browser click Opera at the top and choose: Select All
  • Click the Empty Selected button.
    If you would like to keep your saved passwords, please click No at the prompt.
  • Click Exit on the Main menu to close the program.
Note: On Vista, "Windows Temp" is disabled. To empty "Windows Temp" ATF-Cleaner must be "Run as an Administrator".

Scan with Dr.Web CureIt as follows:
  • Double-click on cureit.exe to start the program. (ignore any prompts to update or check for a new version)
  • When the Dr.Web opens, an "Express Scan of your PC" notice will appear.
  • Under "Start the Express Scan Now", Click "OK" to start. This is a short scan that will scan the files currently running in memory and when something is found, click the Yes button when it asks you if you want to cure it.
  • Once the short scan has finished, Click Options > Change settings
  • Choose the "Scan tab" and UNcheck "Heuristic analysis"
  • Back at the main window, click "Select drives" (a red dot will show which drives have been chosen)
  • Then click the "Start/Stop Scanning" button (green arrow on the right) and the scan will start.
  • When done, a message will be displayed at the bottom advising if any viruses were found.
  • Click "Yes to all" if it asks if you want to cure/move the file.
  • When the scan has finished, look if you can see the icon next to the files found. If so, click it, then click the next icon right below and select "Move incurable".
    (This will move it to the C:\Documents and Settings\userprofile\DoctorWeb\Quarantine folder if it can't be cured)
  • Next, in the Dr.Web CureIt menu on top, click file and choose save report list.
  • Save the DrWeb.csv report to your desktop. (You can use Notepad to open the DrWeb.cvs report)
  • Exit Dr.Web Cureit when done.
  • Important! Reboot your computer because it could be possible that files in use will be moved/deleted during reboot.

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#4 jimshady

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Posted 02 November 2007 - 12:54 PM

Cheers mate - you da man.

I tried avast! and SpyDoctor, but not yet in SAFE MODE (I was going to try but the software recommended against it.)
And I believe I was scanning as Administrator.

On the case now - thanks again for your help.

jim

#5 quietman7

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Posted 02 November 2007 - 12:59 PM

Post back if you continue to have problems. There are other ways to delete that file but where there is one piece of malware, there is usually more so full system scans in safe mode are the place to start.
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