Jump to content


Register a free account to unlock additional features at BleepingComputer.com
Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.

Click here to Register a free account now! or read our Welcome Guide to learn how to use this site.


default browser will not close its process

  • Please log in to reply
3 replies to this topic

#1 e.s.a.


  • Members
  • 2 posts
  • Local time:08:11 PM

Posted 28 May 2009 - 08:18 PM

Hello- Hopefully someone here can help me more than I've been able to do on my own.

I recently noticed that either iexplore.exe or firefox.exe was open in the task manager, and neither can be killed. Only one is active at one time, and no matter what I do, they respawn.

I ran norton and lavasoft, searched the net, but I found nothing. In fact, the only thing I seem to have learned is that drwtsn32.exe has a registry entry that seems related. The following key regenerates:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{T5TBB77L-4678-0MKC-421Q-14416031DYU6}\StubPath

Key Name: C:\WINDOWS\system32\drwt32.exe Restart

According to the info I found on a site, my course of action to remove this "Poison Ivy" trojan was:
1. Toggle default browser to determine if iexplore.exe and firefox.exe would behave the same. They do.
2. Run virus/malware scan. I have, and no scan reveals anything.
3. Run in safemode and delete the stubpath. I did, but it regenerated.
4. Rename the stubpath to prevent it from regenerating. I did, and that didn't work either.

After that didn't work, I booted up in safemode and re-ran all the virus scans. They found nothing. I attempted deleting the suspect key in safemode and setting the permissions of the directory to "Deny" for all users. I hoped that doing that would keep the reg key from respawning. That didn't work.

Also, I noticed (via netstat) that a suspicious connection to 82.38.204.x was established. x was usually a differeny addy each time. I blocked that range via iptables on my wrt54gl tomato. I don't know if that's significant or not.

I have looked at my computer's hjt log, but nothing highly suspicious catches my eye. I have also scoured regmon and processexplorer for anything suspect, but again, nothing catches my eye.

Does anyone have any further suggestions that I might try before I give up and reload XP?

My System:
WinXP_SP3 Fully Updated
Intel i7 920 / ICH10R
Firefox 3.0.10
Internet Explorer 8

I hope I've followed all the rules.


BC AdBot (Login to Remove)


#2 e.s.a.

  • Topic Starter

  • Members
  • 2 posts
  • Local time:08:11 PM

Posted 29 May 2009 - 03:40 PM

Sorry to double post, but I'm desperate. :thumbsup: Am I barking up the wrong tree?

Also, RegMon reports that it is winlogon.exe that is prompting drwtsn32 to restart firefox or iexplore.

Edited by e.s.a., 29 May 2009 - 03:48 PM.

#3 Raven-Chief


  • Members
  • 2 posts
  • Local time:08:11 PM

Posted 19 June 2009 - 03:55 PM

Sorry to double post, but I'm desperate. :thumbsup: Am I barking up the wrong tree?

Also, RegMon reports that it is winlogon.exe that is prompting drwtsn32 to restart firefox or iexplore.

Has anyone come up with any answers to this problem? I have exactly the same issue but I am running Vista.



#4 boopme


    To Insanity and Beyond

  • Global Moderator
  • 73,490 posts
  • Gender:Male
  • Location:NJ USA
  • Local time:08:11 PM

Posted 19 June 2009 - 04:04 PM

Ok let's get an MBAm scan...from you both

Raven-Chief...Start a new topic and post your log there.. This is a better way as the 2 of you may need different steps,thanks.

Next run MBAM (MalwareBytes):

NOTE: Before saving MBAM please rename it to zztoy.exe....now save it to your desktop.

Please download Malwarebytes Anti-Malware and save it to your desktop.
alternate download link 1
alternate download link 2

MBAM may "make changes to your registry" as part of its disinfection routine. If using other security programs that detect registry changes (ie Spybot's Teatimer), they may interfere or alert you. Temporarily disable such programs or permit them to allow the changes.
  • 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 definition 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. Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.
  • Exit MBAM when done.
Note: If MBAM encounters a file that is difficult to remove, you will be asked to reboot your computer so MBAM can proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users