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Can't remove Trojan.DNSChanger


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5 replies to this topic

#1 thsrayas

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Posted 20 April 2010 - 08:13 AM

Lately sometimes when I click on a link, I will get a pop up (I use Firefox) and in the address bar it will say something along the lines of "search.guggle.com" I have tried running MBAM in normal and safe mode and each time MBAM says that it removed Trojan.DNSChanger successfully but it still comes up in scans and I still get pop ups. Here's the log from MBAM:

Malwarebytes' Anti-Malware 1.45
www.malwarebytes.org

Database version: 3937

Windows 6.1.7600
Internet Explorer 8.0.7600.16385

3/31/2010 11:47:13 AM
mbam-log-2010-03-31 (11-47-13).txt

Scan type: Quick scan
Objects scanned: 103123
Time elapsed: 5 minute(s), 46 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 2
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DhcpNameServer (Trojan.DNSChanger) -> Data: 93.188.161.105 93.188.166.105 1.2.3.4 -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{082682af-d184-40b5-af0d-9f274c0eb953}\DhcpNameServer (Trojan.DNSChanger) -> Data: 93.188.161.105 93.188.166.105 1.2.3.4 -> Quarantined and deleted successfully.

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)



This is driving me crazy, any help would be wonderful!

Edited by thsrayas, 20 April 2010 - 08:14 AM.


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#2 boopme

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Posted 20 April 2010 - 12:25 PM

Hello and welcome, first we update and rescan..

Rerun MBAM (MalwareBytes) like this:

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


Next run ATF and SAS: If you cannot access Safe Mode,run in normal ,but let me know.

Note: On Vista, "Windows Temp" is disabled. To empty "Windows Temp" ATF-Cleaner must be "Run as an Administrator".

From your regular user account..
Download Attribune's ATF Cleaner and then SUPERAntiSpyware , Free Home Version. Save both to desktop ..
DO NOT run yet.
Open SUPER from icon and install and Update it
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 yet.

Now reboot into Safe Mode: How to enter safe mode(XP)
Using the F8 Method
Restart your computer.
When the machine first starts again it will generally list some equipment that is installed in your machine, amount of memory, hard drives installed etc. At this point you should gently tap the F8 key repeatedly until you are presented with a Windows XP Advanced Options menu.
Select the option for Safe Mode using the arrow keys.
Then press enter on your keyboard to boot into 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 or Opera browser click that browser 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
.

NOW Scan with SUPER
Open from the desktop icon or the program Files list
On the left, make sure you check C:\Fixed Drive.
Perform a Complete scan. After scan,Verify they are all checked.
Click OK on the summary screen to quarantine all found items.
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.


Please ask any needed questions,post logs and Let us know how the PC is running now.
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

#3 thsrayas

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Posted 21 April 2010 - 07:43 PM

Well I did everything you told me to and I still get the pop-ups, here's the MBAM and SAS logs:



Malwarebytes' Anti-Malware 1.45
www.malwarebytes.org

Database version: 3937

Windows 6.1.7600
Internet Explorer 8.0.7600.16385

3/31/2010 11:47:13 AM
mbam-log-2010-03-31 (11-47-13).txt

Scan type: Quick scan
Objects scanned: 103123
Time elapsed: 5 minute(s), 46 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 2
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DhcpNameServer (Trojan.DNSChanger) -> Data: 93.188.161.105 93.188.166.105 1.2.3.4 -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{082682af-d184-40b5-af0d-9f274c0eb953}\DhcpNameServer (Trojan.DNSChanger) -> Data: 93.188.161.105 93.188.166.105 1.2.3.4 -> Quarantined and deleted successfully.

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)





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

Generated 04/21/2010 at 06:50 PM

Application Version : 4.35.1002

Core Rules Database Version : 4744
Trace Rules Database Version: 1978

Scan type : Complete Scan
Total Scan Time : 00:22:10

Memory items scanned : 345
Memory threats detected : 0
Registry items scanned : 7339
Registry threats detected : 0
File items scanned : 20732
File threats detected : 20

Adware.Tracking Cookie
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@msnportal.112.2o7[1].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@ad.yieldmanager[2].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@admarketplace[1].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@atdmt[2].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@ad.wsod[1].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@ads.bridgetrack[2].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@advertising[1].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@apmebf[1].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@bridge2.admarketplace[1].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@microsoftwindows.112.2o7[1].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@content.yieldmanager[1].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@fastclick[1].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@interclick[2].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@mediaplex[1].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@paypal.112.2o7[1].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@revsci[1].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@sonyelectronicssupportus.112.2o7[1].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@stats.paypal[1].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@statse.webtrendslive[1].txt
C:\Users\Erik\AppData\Roaming\Microsoft\Windows\Cookies\Low\erik@yellowbook.112.2o7[1].txt


I also just had another pop-up and in the address bar it had: http://results.googlesyndication.com/ The new window only contained a button that said "Continue", but I obviously didn't click it.

Edited by thsrayas, 21 April 2010 - 07:50 PM.


#4 boopme

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Posted 21 April 2010 - 08:18 PM

Hello, we need to view the Hosts file.


To view the folder containing your Hosts file, go to Posted Image > Run..., and in the Open box, type: %windir%\system32\drivers\etc\
Click Ok.

The easiest way to access and view the contents is by using Notepad.
  • Double-click on the HOSTS file.
  • A message will appear saying Windows can't open the file or Choose the program you want to open this file.
  • Scroll down the list of programs until you see Notepad.
  • Select it and click OK.
To view the Hosts file in Notepad automatically, go to Posted Image > Run..., and in the Open box, type: notepad %windir%\system32\drivers\etc\hosts
Click Ok.
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

#5 thsrayas

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Posted 21 April 2010 - 09:12 PM

# Copyright © 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host

# localhost name resolution is handled within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost

#6 boopme

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Posted 21 April 2010 - 09:19 PM

Ok then we can try resetting the router ...

ext you must reset the router to its default configuration. This can be done by inserting something tiny like a paper clip end or pencil tip into a small hole labeled "reset" located on the back of the router. Press and hold down the small button inside until the lights on the front of the router blink off and then on again (usually about 10 seconds). If you donít know the router's default password, you can look it up HERE.

However, if there are other Zlob-infected machines using the same router, they will need to be cleared with the above steps before resetting the router. Otherwise, the malware will simply go back and change the router's DNS settings. You also need to reconfigure any security settings you had in place prior to the reset. Check out this site HERE for video tutorials on how to properly configure your router's encryption and security settings. You may also need to consult with your Internet service provider to find out which DNS servers your network should be using.

Once you have ran Malwarebytes' Anti-Malware on the infected system, and reset the router to its default configuration you can reconnect to the internet, and router.
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




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