Threat Explorer

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PUA.CommunityToolbar

PUA.CommunityToolbar

Updated:
June 08, 2015
Name:
CommunityToolbar
Risk Impact:
Low
Systems Affected:
Windows

Behavior

PUA.CommunityToolbar is a potentially unwanted application that inserts ads into web browsers and changes the default home page and search engine settings.

Note: Definitions prior to June 8, 2015 may detect this threat as CommunityToolbar.

Antivirus Protection Dates

  • Initial Rapid Release version November 14, 2014 revision 006
  • Latest Rapid Release version July 17, 2017 revision 020
  • Initial Daily Certified version December 10, 2014 revision 021
  • Latest Daily Certified version July 18, 2017 revision 001
  • Initial Weekly Certified release date December 10, 2014
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
The program may be bundled with a third-party download or installation manager and must be installed manually.

When the program is installed, it creates the following files:
  • %SystemDrive%\Documents and Settings\All Users\Application Data\Conduit\IE\CT3298566\configutaion.json
  • %SystemDrive%\Documents and Settings\All Users\Application Data\Conduit\IE\CT3298566\SetupIcon.ico
  • %SystemDrive%\Documents and Settings\All Users\Application Data\Conduit\IE\CT3298566\UninstallerUI.exe
  • %ProgramFiles%\Conduit\Community Alerts\Alert.dll
  • %ProgramFiles%\MixiDJ_V30\GottenAppsContextMenu.xml
  • %ProgramFiles%\MixiDJ_V30\hk64tbMixi.dll
  • %ProgramFiles%\MixiDJ_V30\hktbMixi.dll
  • %ProgramFiles%\MixiDJ_V30\ldrtbMixi.dll
  • %ProgramFiles%\MixiDJ_V30\MixiDJ_V30ToolbarHelper.exe
  • %ProgramFiles%\MixiDJ_V30\OtherAppsContextMenu.xml
  • %ProgramFiles%\MixiDJ_V30\prxtbMixi.dll
  • %ProgramFiles%\MixiDJ_V30\SharedAppsContextMenu.xml
  • %ProgramFiles%\MixiDJ_V30\tbMixi.dll
  • %ProgramFiles%\MixiDJ_V30\toolbar.cfg
  • %ProgramFiles%\MixiDJ_V30\ToolbarContextMenu.xml

Next, the program creates the following registry entries:
  • HKEY_LOCAL_MACHINE\SOFTWARE\Conduit\Toolbars\"MixiDJ V30 Toolbar" = "[HEXIDECIMAL DATA]"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Conduit\Community Alerts\"Path" = "HEXIDECIMAL DATA"
  • HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\URLSearchHooks\"{1122b43d-30ee-403f-9bfa-3cc99b0caddd}" = ""
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{1122B43D-30EE-403F-9BFA-3CC99B0CADDD}\"VerCache" = "[HEXIDECIMAL DATA]"
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\ShellNoRoam\MUICache\C:\SAMPLES\CT\"7EA09D64BEC2E684E2806E174F7D428F3D192D65BEB4EB8350E5381E770CAC9C.exe" = "MixiDJ_V30 Toolbar"
  • HKEY_CURRENT_USER\Software\Conduit\IE\Hook\"ActiveHookToolbarName" = "[HEXIDECIMAL DATA]"
  • HKEY_CURRENT_USER\Software\Conduit\RevertSettings\"ConduitLatestHomePage" = "http://search.conduit.com?SearchSource=10&CUI=UN28920073728975311&UM=4&ctid=CT3298566"
  • HKEY_CURRENT_USER\Software\ConduitSearchScopes\"{D1E4EF33-F2AF-467B-AE17-397B5A5A984A}" = "0"

The program then creates the following registry subkeys:
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\IECT3298566
  • HKEY_LOCAL_MACHINE\SOFTWARE\Conduit\Platforms
  • HKEY_LOCAL_MACHINE\SOFTWARE\Conduit\HomePage
  • HKEY_LOCAL_MACHINE\SOFTWARE\MixiDJ_V30\toolbar
  • HKEY_LOCAL_MACHINE\SOFTWARE\MixiDJ_V30\Communicator
  • HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes
  • HKEY_CURRENT_USER\Software\Conduit\Community Alerts
  • HKEY_CURRENT_USER\Software\Conduit\IE\Hook\MixiDJ_V30
  • HKEY_CURRENT_USER\Software\MixiDJ_V30\toolbar\

During the installation process, the program installs the Value Apps and Search Protect modules.

The program works as a plugin for the Internet Explorer browser. After the plugin is launched for the first time, it asks the user if they want to enable Value Apps. However, Value Apps will be enabled by default, even if the user doesn't agree to this.

The program may also change the default home page and search engines to one of the following domains:
  • [http://]search.conduit.com
  • [http://]www.trovi.com

These domains work as a wrapper for the Bing search engine and may show advertisements.


The program contains additional modules which may show advertisements while the user shops online.
You may have arrived at this page either because you have been alerted by your Symantec product about this risk, or you are concerned that your computer has been affected by this risk.

Before proceeding further we recommend that you run a full system scan . If that does not resolve the problem you can try one of the options available below.



FOR NORTON USERS
If you are a Norton product user, we recommend you try the following resources to remove this risk.


Removal Tool

If you have an infected Windows system file, you may need to replace it using the Windows installation CD .


How to reduce the risk of infection
The following resources provide further information and best practices to help reduce the risk of infection.


FOR BUSINESS USERS
If you are a Symantec business product user, we recommend you try the following resources to remove this risk.


Identifying and submitting suspect files
Submitting suspicious files to Symantec allows us to ensure that our protection capabilities keep up with the ever-changing threat landscape. Submitted files are analyzed by Symantec Security Response and, where necessary, updated definitions are immediately distributed through LiveUpdate™ to all Symantec end points. This ensures that other computers nearby are protected from attack. The following resources may help in identifying suspicious files for submission to Symantec.


Removal Tool

If you have an infected Windows system file, you may need to replace it using the Windows installation CD .


How to reduce the risk of infection
The following resource provides further information and best practices to help reduce the risk of infection.
Protecting your business network



MANUAL REMOVAL
The following instructions pertain to all current Symantec antivirus products.


1. Performing a full system scan
How to run a full system scan using your Symantec product


2. Restoring settings in the registry
Many risks make modifications to the registry, which could impact the functionality or performance of the compromised computer. While many of these modifications can be restored through various Windows components, it may be necessary to edit the registry. See in the Technical Details of this writeup for information about which registry keys were created or modified. Delete registry subkeys and entries created by the risk and return all modified registry entries to their previous values.
Writeup By: Priti More