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Trojan Downloader. Userinit.exe


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#1 hanzz

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Posted 13 January 2009 - 07:37 PM

Sorry I'm new to this and I've never really had to post on forums for pc help but this one is driving me nuts. Recently I managed to acquire a trojan downloader that has been installing rootkits and other trojans onto my pc. I did a scan in safemode with both Superantispyware and Malwarebytes' Anti-Malware. I managed to get rid of most of them, but I noticed on every reboot two Trojan.Downloaders keep reappearing.

Here is the registry key data for both of them (detected by Malwarebyte):
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit (Located in: c:\windows\system32\userinit.exe)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit (Located in: system32\userinit.exe)

Some of the symptoms that result from the trojans and rootkits downloaded are:

- Desktop doesn't load after user login (no icons or taskbars, can only access task manager): when this occurs, I have to run SuperAntispyware through the task manager to delete the trojan in order to get my desktop to load
- Fake spyware alerts popping up on my bottom task bar telling me to "Download the latest antispyware"
- Slower internet browsing & downloading speeds

Please help me out here, I have a lot of really important documents and programs on my desktop and I don't want to reformat the computer...yet.

Cheers.

Hanzz

Edited by Orange Blossom, 13 January 2009 - 07:42 PM.
Move from HiJack This forum to Am I Infected as there are no logs. ~ OB


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#2 boopme

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Posted 13 January 2009 - 08:37 PM

Hello, Please post the last SUPERAntispyware and MalwareBytes ( Mbam ) scan log or run another like this.

Try this on the desktop:
Go to Start > Control Panel > Display. Click on the "Desktop" tab, then the "Customize Desktop..." button.
Click on the "Web" tab, then under Web Pages, uncheck and delete everything you find (except "My Current Home page").
Also, make sure the Lock desktop items box is unchecked. Click "Ok", then "Apply" and "Ok".


Open MBAM in normal mode and click Update tab, select Check for Updates,when done
click Scanner tab,select Quick scan and scan.
After scan click Remove Selected, Post new scan log and Reboot.


Please run SDFix:
Before we start fixing anything you should print out these instructions or copy them to a NotePad file so they will be accessible. Some steps will require you to disconnect from the Internet or use Safe Mode and you will not have access to this page.

Please download SDFix by AndyManchesta and save it to your desktop.
When using this tool, you must use the Administrator's account or an account with "Administrative rights"
  • Double click SDFix.exe and it will extract the files to %systemdrive%
  • (this is the drive that contains the Windows Directory, typically C:\SDFix).
  • DO NOT use it just 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".

Open the SDFix folder and double click RunThis.bat to start the script.
  • Type Y to begin the cleanup process.
  • It will remove any Trojan Services or Registry Entries found then prompt you to press any key to Reboot.
  • Press any Key and it will restart the PC.
  • When the PC restarts, the Fixtool will run again and complete the removal process then display Finished, press any key to end the script and load your desktop icons.
  • Once the desktop icons load the SDFix report will open on screen and also save into the SDFix folder as Report.txt.
  • Copy and paste the contents of the results file Report.txt in your next replyalong with a new HijackThis log.
-- If this error message is displayed when running SDFix: "The command prompt has been disabled by your administrator. Press any key to continue..."
Please go to Start Menu > Run > and copy/paste the following line:
%systemdrive%\SDFix\apps\swreg IMPORT %systemdrive%\SDFix\apps\Enable_Command_Prompt.reg
Press Ok and then run SDFix again.

-- If the Command Prompt window flashes on then off again on XP or Win 2000, please go to Start Menu > Run > and copy/paste the following line:
%systemdrive%\SDFix\apps\FixPath.exe /Q
Reboot and then run SDFix again.

-- If SDFix still does not run, check the %comspec% variable. Right-click My Computer > click Properties > Advanced > Environment Variables and check that the ComSpec variable points to cmd.exe.
%SystemRoot%\system32\cmd.exe

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