Author Topic: [Urgent!] Windows/assembly infections!  (Read 2500 times)

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LiquidNapalm

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[Urgent!] Windows/assembly infections!
« on: November 25, 2011, 04:07:56 PM »
I just got avast today, and It keeps picking up viruses from the windows/assembly folder. Avast found "Win32:DNSChanger-VJ (trj)" 7 times, and it's originating from "Windows/assembly/temp/U". It won't let me move this threat to the virus chest, it says "acsess denied (5)". This is really concerning me, because avast keeps blocking the same threat, but it's attacking a different process each time (such as IE explorer or Teamviewer). They'res also a malicious file called "Windows/assembly/GAC_64/deskptop.ini". I can only remove threats found with MBAM, wich are different from the ones Avast finds, although both of the infections are re-occuring. I've had alot of infections lately, but these two are the most troubling. Any help would be appreciated!

Offline Pondus

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Re: [Urgent!] Windows/assembly infections!
« Reply #1 on: November 25, 2011, 04:14:50 PM »
did you update Malwarebytes before you run it ?


Follow the guide here and attach all logs
http://forum.avast.com/index.php?topic=53253.0



Offline oldman

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Re: [Urgent!] Windows/assembly infections!
« Reply #2 on: November 25, 2011, 05:34:46 PM »
Hi , welcome to the forum.

To make cleaning this machine easier
  • Please do not uninstall/install any programs unless asked to
    It is more difficult when files/programs are appearing in/disappearing from the logs.
  • Please do not run any scans other than those requested
  • Please follow all instructions in the order posted
  • All logs/reports, etc.. must be posted in Notepad. Please ensure that word wrap is unchecked. In notepad click format, uncheck word wrap if it is checked.
  • Do not attach any logs/reports, etc.. unless specifically requested to do so.
  • If you have problems with or do not understand the instructions, Please ask before continuing.
  • Please stay with this thread until given the All Clear. A absence of symptoms does not mean a clean machine.
If you are using Vista or Windows7 the .exes must be right clicked and click "Run as Administrator" to run them.


Download aswMBR.exe to your desktop.

Double click the aswMBR.exe to run it

Click the "Scan" button to start scan


On completion of the scan click save log, save it to your desktop and post in your next reply


There shall also be a file on your desktop named MBR.dat. Right click that file and select Send To>Compressed (zipped) folder. Please attach that zipped file in your next reply. 

Next

Download OTL to your desktop.
  • Double click on OTL.exe  to run it. Make sure all other windows are closed and to let it run uninterrupted.
  • When the window appears, underneath Output at the top change it to Minimal Output
  • Check the boxes beside LOP Check and Purity Check.
  • In the window under Custom Scans/Fixes copy and paste the following

netsvcs
%SYSTEMDRIVE%\*.*
%systemroot%\Fonts\*.com
%systemroot%\Fonts\*.dll
%systemroot%\Fonts\*.ini
%systemroot%\Fonts\*.ini2
%systemroot%\Fonts\*.exe
%systemroot%\system32\spool\prtprocs\w32x86\*.*
%systemroot%\REPAIR\*.bak1
%systemroot%\REPAIR\*.ini
%systemroot%\system32\*.jpg
%systemroot%\*.jpg
%systemroot%\*.png
%systemroot%\*.scr
%systemroot%\*._sy
%APPDATA%\Adobe\Update\*.*
%ALLUSERSPROFILE%\Favorites\*.*
%APPDATA%\Microsoft\*.*
%PROGRAMFILES%\*.*
%APPDATA%\Update\*.*
%systemroot%\*. /mp /s
CREATERESTOREPOINT
%systemroot%\System32\config\*.sav
%PROGRAMFILES%\bak. /s
%systemroot%\system32\bak. /s
%ALLUSERSPROFILE%\Start Menu\*.lîk /x
%systemroot%\system32\config\systemprofile\*.dat /x
%systemroot%\*.config
%systemroot%\system32\*.db
%PROGRAMFILES%\Internet Explorer\*.dat
%APPDATA%\Mikzosoft\Internet Explorer\Quick Launch\*.lnk /x
%USERPROFILE%\Deskuop\*.exe
%PROGRAMFILES%\Common Files\*.*
%systemroot%\*.src
%systemroot%\install\*.*
%systemroot%\system32\DLL\*.*
%systemroot%\system32\HelpFiles\*.*
%systemroot%\system32\rundll\*.*
%systemroot%\winn32\*.*
%systemroot%\Java\*.*
%systemroot%\system32\test\*.*
%systemroot%\system32\Rundll32\*.*
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\Results\Install|LastSuccessTime /rs
%USERPROFILE%\..|smtmp;true;true;true /FP
%temp%\smtmp\*.*
/md5start
iexplore.*
explorer.*
winlogon.*
dll
zx.dll
hlp.dat
consrv.dll
/md5stop


  • Click the Run Scan button. Do not change any settings unless otherwise told to do so. The scan won't 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 it with your next reply. You may need two posts to fit them all in.

Please post back with
  • aswMBR log
  • both OTL logs
  • mbr.zip (attached)
Please describe all symptoms.

Thanks