Remove the Conflicker.B Spam Trojan (Uninstall Guide)

  • October 19, 2009

Virus writers are becoming more and more canny with the methods that they use to distribute malware. This is seen with a new SPAM email that is being distributed that contains an attachment, that when run, lowers the security of Internet Explorer and installs the rogue anti-spyware program called Antivirus Pro 2010 on to your computer. This SPAM pretends to be an email from Microsoft where they state that a new version of Conficker has been released and that the included attachment, called install.zip, is a tool that can be used to scan and clean your computer of this infection. In reality this attachment is a Trojan that will harm the security of your computer. The current text of the SPAM message is:

Subject: Conflicker.B Infection Alert
Message:

Dear Microsoft Customer,

Starting 18/10/2009 the ‘Conficker’ worm began infecting Microsoft customers unusually rapidly. Microsoft has been advised by your Internet provider that your network is infected.

To counteract further spread we advise removing the infection using an antispyware program. We are supplying all effected Windows Users with a free system scan in order to clean any files infected by the virus.

Please install attached file to start the scan. The process takes under a minute and will prevent your files from being compromised. We appreciate your prompt cooperation.

Regards,
Microsoft Windows Agent #2 (Hollis)
Microsoft Windows Computer Safety Division

If you download the attachment and open the ZIP file, you will see a file called install.exe. When the install.exe file is run it will change your Internet Explorer security settings so that Internet Explorer will run files that are normally considered risky. It will also display a fake security warning in your taskbar that states Windows has detected an infection. The text of this warning is:

Your computer is infected!
Windows has detected spyware infection!
It is recomended to use special antispyware tools to pervent data loss.Windows will now download and install the most up-to-date antispyware for you.
Click here to protect your computer from spyware!

Finally, the Trojan will download and install the rogue anti-spyware program called Antivirus Pro 2010 onto your computer, which will then state that you have numerous infections running on your computer. Please ignore any warnings that Antivirus Pro 2010 displays on your computer as they are all false and are only being shown to convince you to purchase the program.

  • Fake Security Warning
  • Antivirus Pro 2010

The install.exe Trojan is detected by anti-malware companies using the following names:

 

Vendor
Detected Name
Vendor
Detected Name
McAfee Generic FakeAlert.a Avast Win32:Trojan-gen
Microsoft TrojanDownloader:Win32/FakeRean AVG Generic15.CWZ
Panda Adware/AntivirusPro2010
BitDefender Trojan.Downloader.FakeAV.DV
Sophos Mal/EncPk-KP DrWeb Trojan.DownLoad.50246 2
Symantec Trojan.FakeAV F-Prot W32/FakeRean.E
TrendMicro TROJ_FAKEAV.BLV Kaspersky

Packed.Win32.Krap.ah

 

This guide will walk you through removing the Conflicker.B SPAM Trojan, Antivirus Pro 2010, and any related Malware.

Conflicker.B Spam Trojan Removal Options

Self Help Guide

This guide contains advanced information, but has been written in such a way so that anyone can follow it. Please ensure your data is backed up before proceeding.

If you are uncomfortable making changes to your computer or following these steps, do not worry! Instead you can get free one-on-one help by asking in the forums.
  1. Print out these instructions as we will need to close every window that is open later in the fix.

  2. At this point you should download Malwarebytes Anti-Malware, or MBAM, to scan your computer for any any infections or adware that may be present. Please download Malwarebytes from the following location and save it to your desktop:

    Malwarebytes Anti-Malware Download Link (Download page will open in a new window)

  3. Once downloaded, close all programs and Windows on your computer, including this one.

  4. Double-click on the icon on your desktop named mb3-setup-1878.1878-3.0.6.1469.exe. This will start the installation of MBAM onto your computer.

  5. When the installation begins, keep following the prompts in order to continue with the installation process. Do not make any changes to default settings and when the program has finished installing, make sure you leave Launch Malwarebytes Anti-Malware checked. Then click on the Finish button. If MalwareBytes prompts you to reboot, please do not do so.

  6. MBAM will now start and you will be at the main screen as shown below.



    Malwarebytes Anti-Malware


    Please click on the Scan Now button to start the scan. If there is an update available for Malwarebytes it will automatically download and install it before performing the scan.

  7. MBAM will now start scanning your computer for malware. This process can take quite a while, so we suggest you do something else and periodically check on the status of the scan to see when it is finished.



    Malwarebytes Anti-Malware


  8. When MBAM is finished scanning it will display a screen that displays any malware that it has detected. Please note that the infections found may be different than what is shown in the image below due to the guide being updated for newer versions of MBAM.


    MalwareBytes Scan Results


    You should now click on the Remove Selected button to remove all the seleted malware. MBAM will now delete all of the files and registry keys and add them to the programs quarantine. When removing the files, MBAM may require a reboot in order to remove some of them. If it displays a message stating that it needs to reboot, please allow it to do so. Once your computer has rebooted, and you are logged in, please continue with the rest of the steps.

  9. You can now exit the MBAM program.

  10. Now download the following Registry file and save it to your desktop.

    FixIE.reg

  11. Once the file is downloaded, double-click on the FixIE.reg file and allow the data to be merged into your Windows Registry. This will fix the revert Internet Explorer's security settings back to the more secure defaults.

Your computer should now be free of the Conflicker.B Spam Trojan. If your current anti-virus solution let this infection through, you may want to consider purchasing the PRO version of Malwarebytes Anti-Malware to protect against these types of threats in the future.

View Associated Conflicker.B Spam Trojan Files

%UserProfile%\Application Data\seres.exe %UserProfile%\Application Data\svcst.exe %UserProfile%\Application Data\lizkavd.exe

File Location Notes:

%UserProfile% refers to the current user's profile folder. By default, this is C:\Documents and Settings\<Current User> for Windows 2000/XP, C:\Users\<Current User> for Windows Vista/7/8, and c:\winnt\profiles\<Current User> for Windows NT.

View Associated Conflicker.B Spam Trojan Registry Information

HKEY_LOCAL_MACHINE\SOFTWARE\AntivirusPro_2010 HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ESENT\Process\lizkavd HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\AntivirusPro_2010 HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Download "RunInvalidSignatures" = "1" HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Associations "LowRiskFileTypes" = "zip;.rar;.cab;.txt;.exe;.reg;.msi;.htm;.html;.gif;.bmp;.jpg;.avi;.mov;.mp3;.wav" HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Associations "SaveZoneInformation" = "1" HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer "ForceClassicControlPanel" = "1" HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Download "CheckExeSignatures" = "no" HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "mserv" HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "svchost" HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ESENT\Process\lizkavd\ HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "Antivirus Pro 2010"

This is a self-help guide. Use at your own risk.

BleepingComputer.com can not be held responsible for problems that may occur by using this information. If you would like help with any of these fixes, you can ask for malware removal assistance in our Virus,Trojan,Spyware, and Malware Removal Logs forum.

If you have any questions about this self-help guide then please post those questions in our Am I infected? What do I do? and someone will help you.

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