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Trojan.Qhost disappeared


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#1 Uncle Rico

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Posted 27 March 2010 - 06:56 PM

Last night I came home to find my Spyware Doctor had scanned and detected 6 infections of Trojan.Qhost. When I tried to remove them, it would say they had not been cleaned successfully. I full scanned with MBAM, F-Secure, and Spybot and found nothing. I then went to safe mode and ran MBAM and results were clean once again, so I ran Spyware Dr again and found the same infections. Again it would not remove them. I then rebooted to normal mode and ran a full scan with F-Secure, when I came home my wife said the computer locked up and she rebooted and ran the F-secure once more, but it detected nothing. . After one more fullscan with spyware doctor it has detected the same infections (EDIT: it reappeared with this last full scan) but cannot remove them. Any ideas on how to remove these infections?

Edited by Uncle Rico, 28 March 2010 - 10:05 AM.


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#2 techextreme

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Posted 29 March 2010 - 10:26 AM

Let's give SuperAntiSpyware a run and see if it finds anything. I'd also like you to check your Proxy settings before running SuperAntiSpyware.

Check your Proxy settings in Internet Explorer to make sure malware did not alter them. If so, that can affect your ability to browse or download tools required for disinfection:

* Open Internet Explorer > click Tools > Internet Options > Connections tab.
* Click the LAN Settings... button and uncheck Use a proxy server for your LAN
or change the settings to the proxy you normally use if you previously reconfigured it.
* Remove any unknown addresses from the Address box. 80 is the default Port so it does not have to be changed.
* Click Ok and then click Ok again.
* Close Internet Explorer and restart the computer.
* An example of how to do this with screenshots can be found in steps 3-7 under the section Automated Removal Instructions... in this guide..

Check your Proxy settings in Firefox to make sure malware did not alter them:

* Open Firefox, click Tools > Options > Advanced and click the Network Tab.
* Under the Connection section click on the Settings... button.
* Under Configure Proxies to Access the Internet, check No proxy. This is the default option if you don't use a proxy.
* Click Ok and then click OK again.
* Close Firefox and restart the computer.

For other browsers, please refer to How to configure browser proxy settings.

SAS, may take a long time to scan
Please download and scan with SUPERAntiSpyware Free
  • Double-click SUPERAntiSypware.exe and use the default settings for installation.
  • An icon will be created on your desktop. Double-click that icon to launch the program.
  • If asked to update the program definitions, click "Yes". If not, update the definitions before scanning by selecting "Check for Updates". (If you encounter any problems while downloading the updates, manually download them from here. Double-click on the hyperlink for Download Installer and save SASDEFINITIONS.EXE to your desktop. Then double-click on SASDEFINITIONS.EXE to install the definitions.)
  • In the Main Menu, click the Preferences... button.
  • Click the "General and Startup" tab, and under Start-up Options, make sure "Start SUPERAntiSpyware when Windows starts" box is unchecked.
  • Click the "Scanning Control" tab, and under Scanner Options, make sure the following are checked (leave all others unchecked):
    • Close browsers before scanning.
    • Scan for tracking cookies.
    • Terminate memory threats before quarantining.
  • Click the "Close" button to leave the control center screen and exit the program.
  • Do not run a scan just yet.
  • First
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".

Scan with SUPERAntiSpyware as follows:
  • Launch the program and back on the main screen, under "Scan for Harmful Software" click Scan your computer.
  • On the left, make sure you check C:\Fixed Drive.
  • On the right, under "Complete Scan", choose Perform Complete Scan and click "Next".
  • After the scan is complete, a Scan Summary box will appear with potentially harmful items that were detected. Click "OK".
  • Make sure everything has a checkmark next to it and click "Next".
  • A notification will appear that "Quarantine and Removal is Complete". Click "OK" and then click the "Finish" button to return to the main menu.
  • If asked if you want to reboot, click "Yes" and reboot normally.
  • To retrieve the removal information after reboot, launch SUPERAntispyware again.
    • Click Preferences, then click the Statistics/Logs tab.
    • Under Scanner Logs, double-click SUPERAntiSpyware Scan Log.
    • If there are several logs, click the current dated log and press View log. A text file will open in your default text editor.
    • Please copy and paste the Scan Log results in your next reply.
  • Click Close to exit the program.

Note.. SAS doesn't open the registry hives for other user accounts on the system, so scans should be done from each user account.

Please post the log from SAS when complete.
Techextreme

"Admire those who attempt great things, even though they fail."

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#3 Uncle Rico

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Posted 29 March 2010 - 09:15 PM

I followed the instructions you gave me. My proxy settings in IE and firefox were both normal, SAS only found some tracking cookies. I have also ran MBAM and Spybot, it only seems a full scan with Spyware DR finds the trojan.qhost. I will paste the SAS log. I only have one user account, so I ran it under that. I did not run under the administrator account that shows up in safe mode. My normal account should have administrator status. Let me know if I should try anything else. Thanks for the help.

SUPERAntiSpyware Scan Log
http://www.superantispyware.com

Generated 03/29/2010 at 08:54 PM

Application Version : 4.35.1000

Core Rules Database Version : 4747
Trace Rules Database Version: 2559

Scan type : Complete Scan
Total Scan Time : 00:43:03

Memory items scanned : 331
Memory threats detected : 0
Registry items scanned : 6999
Registry threats detected : 0
File items scanned : 31144
File threats detected : 1

Adware.Tracking Cookie
c:\documents and settings\luke musick\cookies\luke_musick@ad.wsod[2].txt

#4 techextreme

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Posted 30 March 2010 - 07:06 AM

Let's give Dr Web a run and see what it finds. Post the log from Dr. Web when complete.

Please download Dr.Web CureIt, the free version & 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".

Scan with Dr.Web CureIt as follows:
  • Double-click on launch.exe to open the program and click Start. (There is no need to update if you just downloaded the most current version
  • Read the Virus check by DrWeb scanner prompt and click Ok where asked to Start scan now? Allow the setup.exe to load if asked by any of your security programs.
  • The Express scan will automatically begin.
  • (This is a short scan of files currently running in memory, boot sectors, and targeted folders).
  • If prompted to dowload the Full version Free Trial, ignore and click the X to close the window.
  • If an infected object is found, you will be prompted to move anything that cannot be cured. Click Yes to All.
  • When complete, click Select All, then choose Cure > Move incurable.
  • (This will move any detected files to the C:\Documents and Settings\userprofile\DoctorWeb\Quarantine folder if they can't be cured)
  • Now put a check next to Complete scan to scan all local disks and removable media.
  • In the top menu, click Settings > Change settings, and UNcheck "Heuristic analysis" under the "Scanning" tab, then click Ok.
  • Back at the main window, click the green arrow "Start Scanning" button on the right under the Dr.Web logo.
  • When the scan is complete, a message will be displayed at the bottom indicating if any viruses were found.
  • Click "Yes to all" if asked to cure or move the file(s) and select "Move incurable".
  • In the top menu, click file and choose save report list.
  • Save the DrWeb.csv report to your desktop.
  • 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.
  • After reboot, post the contents of the log from Dr.Web in your next reply. (You can use Notepad to open the DrWeb.cvs report)

Techextreme

"Admire those who attempt great things, even though they fail."

-- Seneca

#5 Uncle Rico

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Posted 01 April 2010 - 06:22 AM

I finally had time to run Dr Web, I will post the log. It detected trojan.click, hopefully this was the infection I had been looking for. I ran the Spyware Dr scan again and it came back clean. Let me know if there is anything else I should be doing. Thanks for the help.

A0158969.exe;C:\System Volume Information\_restore{129201FA-B0AC-49B3-96B2-DEB8B91E727B}\RP1519;Trojan.Click.1487;Deleted.;

#6 techextreme

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Posted 01 April 2010 - 07:10 AM

Please download TFC (Temp File Cleaner) by Old Timer and save it to your desktop.
alternate download link

* Save any unsaved work. TFC will close ALL open programs including your browser!
* Double-click on TFC.exe to run it. If you are using Vista, right-click on the file and choose Run As Administrator.
* Click the Start button to begin the cleaning process and let it run uninterrupted to completion.
* TFC will clear out all temp folders for all user accounts (temp, IE temp, Java, FF, Opera, Chrome, Safari), including Administrator, All Users, LocalService, NetworkService, and any other accounts in the user folder.
* Important! If TFC prompts you to reboot, please do so immediately. If not prompted, manually reboot the machine anyway to ensure a complete clean.

Note: It is normal for the computer to be slow to boot after running TFC cleaner the first time.



Now you should Create a New Restore Point to prevent possible reinfection from an old one. Some of the malware you picked up could have been backed up, renamed and saved in System Restore. Since this is a protected directory your tools cannot access to delete these files, they sometimes can reinfect your system if you accidentally use an old restore point. Setting a new restore point AFTER cleaning your system will help prevent this and enable your computer to "roll-back" to a clean working state.

The easiest and safest way to do this is:
  • Go to Start > Programs > Accessories > System Tools and click "System Restore".
  • Choose the radio button marked "Create a Restore Point" on the first screen then click "Next". Give the R.P. a name, then click "Create". The new point will be stamped with the current date and time. Keep a log of this so you can find it easily should you need to use System Restore.
  • Then use Disk Cleanup to remove all but the most recently created Restore Point.
  • Go to Start > Run and type: Cleanmgr
  • Click "Ok". Disk Cleanup will scan your files for several minutes, then open.
  • Click the "More Options" tab, then click the "Clean up" button under System Restore.
  • Click Ok. You will be prompted with "Are you sure you want to delete all but the most recent restore point?"
  • Click Yes, then click Ok.
  • Click Yes again when prompted with "Are you sure you want to perform these actions?"
  • Disk Cleanup will remove the files and close automatically.
Vista and Windows 7 users can refer to these links: Create a New Restore Point in Vista or Windows 7 and Disk Cleanup in Vista.
Techextreme

"Admire those who attempt great things, even though they fail."

-- Seneca




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