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Trojan.win32.qhost (kaspersky)


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8 replies to this topic

#1 savasg

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Posted 23 September 2008 - 11:23 AM

I could not remove the "SettingsModifier:Win32/PossibleHostsFileHijack"
I tried what microsoft removal tool asking the change "C:\Windows\system32\drivers\etc\hosts" but it keeps coming on every booth.

I need some help

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#2 quietman7

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Posted 23 September 2008 - 01:16 PM

You still may have malware on your system.

Please download Malwarebytes Anti-Malware and save it to your desktop.
alternate download link 1
alternate download link 2
  • 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 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 and exit MBAM.
Note:
-- If MBAM encounters a file that is difficult to remove, you may be asked to reboot your computer so it can proceed with the disinfection process. Regardless if prompted to restart the computer or not, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.

-- MBAM may make changes to your registry as part of its disinfection routine. If you're using other security programs that detect registry changes (like Spybot's Teatimer), they may interfere with the fix or alert you after scanning with MBAM. Please temporarily disable such programs or permit them to allow the changes.

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#3 savasg

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Posted 23 September 2008 - 01:35 PM

Thanks for your help;
Here is the log

Malwarebytes' Anti-Malware 1.28
Database version: 1200
Windows 6.0.6001 Service Pack 1

23.09.2008 21:34:06
mbam-log-2008-09-23 (21-34-06).txt

Scan type: Quick Scan
Objects scanned: 41915
Time elapsed: 2 minute(s), 35 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 3
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{afdbddaa-5d3f-42ee-b79c-185a7020515b} (Adware.Agent) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\affltid (Malware.Trace) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\affltid (Malware.Trace) -> Quarantined and deleted successfully.

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)

#4 quietman7

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Posted 23 September 2008 - 01:57 PM

Please download HostsXpert - Hosts File Manager
  • Extract (unzip) HostsXpert.zip to a permanent folder on your hard drive such as C:\HostsXpert
  • Double-click HostsXpert.exe to run the program.
  • Click "Restore MS Hosts File".
  • Click OK at the confirmation box.
  • Click "Make Read Only".
  • Click the X to exit the program.
-- If the Hosts file does not exist, you will be prompted to create a new one. Just press "Ok".
-- If you were using a custom Hosts file you will need to replace any of those entries yourself.


Please download ATF Cleaner by Atribune & save it to your desktop. alternate download link DO NOT use yet.
Please download and install 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 and unzip into the program's folder.)
  • 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.
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 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.

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#5 savasg

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Posted 23 September 2008 - 02:14 PM

After rebooth it is still there
here is the content of the file "C:\Windows\system32\drivers\etc\hosts"



127.0.0.1 localhost
127.0.0.1 update.microsoft.com
127.0.0.1 download.microsoft.com
127.0.0.1 downloads.microsoft.com
127.0.0.1 windowsupdate.microsoft.com
127.0.0.1 www.windowsupdate.microsoft.com
127.0.0.1 support.microsoft.com
127.0.0.1 www.symantec.com
127.0.0.1 liveupdate.symantecliveupdate.com
127.0.0.1 liveupdate.symantec.com
127.0.0.1 update.symantec.com
127.0.0.1 avpg.crsi.symantec.com
127.0.0.1 securityresponse.symantec.com
127.0.0.1 symantec.com
127.0.0.1 pif.symantec.com
127.0.0.1 pifmain.symantec.com
127.0.0.1 update.avg.com
127.0.0.1 backup.avg.cz
127.0.0.1 akamai.avg.com
127.0.0.1 u20.eset.com
127.0.0.1 www.eset.com
127.0.0.1 eset.com
127.0.0.1 www.mcafee.com
127.0.0.1 mcafee.com
127.0.0.1 us.mcafee.com
127.0.0.1 download.mcafee.com
127.0.0.1 viruslist.com
127.0.0.1 f-secure.com
127.0.0.1 www.f-secure.com
127.0.0.1 www.avp.com
127.0.0.1 www.sophos.com
127.0.0.1 sophos.com

HOSTSXPERT SAYS CAN NOT CREATE FILE "C:\Windows\system32\drivers\etc\hosts

I AM USING VISTA STARTER
ON ATF CLENAR, WINTEMP IS ENABLED BUT PREFETCH IS DISABLED

I WILL POST THE SCAN LOGS OF ATF CLEANER AND SUPERANTISPYWARE AFTER I OPEN IN SAFE MODE....

#6 quietman7

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Posted 23 September 2008 - 02:26 PM

Please download hosts.zip and save it to your Desktop.
  • Extract (unzip) the file to its own folder C:\hosts. (Click here for information on how to do this if not sure.)
  • Open up the hosts folder and double-click on the mvps.bat file.
  • The script will rename your present HOSTS file to HOSTS.MVP and copy the new HOSTS file to the correct location on your system.
Note: You may have to overwrite the hosts file in "Safe Mode" if you get "an access denied message" when trying to do it in normal mode.

MVPS HOSTS File Install Instructions with screenshots if you need them.
Hosts File FAQ
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#7 savasg

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Posted 23 September 2008 - 03:53 PM

HERE IS THE LOG FOR SUPERANTISPYWARE; IT LOOKS CLEAN BUT AFTER REBOOTH IT IS AGAIN THERE.
I WILL KEEP YOU POSTED AFTER HOSTS.ZIP

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

Generated 09/23/2008 at 11:46 PM

Application Version : 4.21.1004

Core Rules Database Version : 3577
Trace Rules Database Version: 1565

Scan type : Complete Scan
Total Scan Time : 01:25:31

Memory items scanned : 195
Memory threats detected : 0
Registry items scanned : 7669
Registry threats detected : 0
File items scanned : 128093
File threats detected : 0

#8 savasg

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Posted 23 September 2008 - 04:22 PM

Hi there again..
Unfortunatelly hosts files did change temporarely but after rebooth it is still the same files...

what should I do know?

#9 quietman7

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Posted 23 September 2008 - 06:30 PM

Some infections are difficult to remove completely because of their morphing characteristics which allows the malware to regenerate itself. Sometimes there is a hidden piece of malware which has not been detected that protects files (which have been detected) and registry keys so they cannot be permanently deleted. Disinfection will probably require the use of more powerful tools than we recommend in this forum. Before that can be done you will need you to create and post a hijackthis log for further investigation.

Please read the pinned topic titled "Preparation Guide For Use Before Posting A Hijackthis Log". If you cannot complete a step, then skip it and continue with the next. In Step 9 there are instructions for downloading the HijackThis Installer and creating a log. This is an automatic setup version which will install the program in the proper location.

When you have done that, post your log in the HijackThis Logs and Malware Removal forum, NOT here, for assistance by the HJT Team Experts. A member of the Team will walk you through, step by step, on how to clean your computer. If you post your log back in this thread, the response from the HJT Team will be delayed because your post will have to be moved. This means it will fall in line behind any others posted that same day.

Start a new topic, give it a relevant title and post your log along with a brief description of your problem, a summary of any anti-malware tools you have used and a summary of any steps that you have performed on your own. An expert will analyze your log and reply with instructions advising you what to fix. After doing this, we would appreciate if you post a link to your log back here so we know that your getting help from the HJT Team.

Please be patient. It may take a while to get a response because the HJT Team members are very busy working logs posted before yours. They are volunteers who will help you out as soon as possible. Once you have made your post and are waiting, please DO NOT "bump" your post or make another reply until it has been responded to by a member of the HJT Team. Generally the staff checks the forum for postings that have 0 replies as this makes it easier for them to identify those who have not been helped. If you post another response there will be 1 reply. A team member, looking for a new log to work may assume another HJT Team member is already assisting you and not open the thread to respond.

If after 5 days you still have received no response, then post a link to your HJT log in the thread titled "Haven't Had A Reply In Five Days?".
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