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PUA.TangoToolbar

PUA.TangoToolbar

Updated:
June 29, 2015
Infection Length:
Varies
Publisher:
Tango
Risk Impact:
Low
Systems Affected:
Windows

Behavior

PUA.TangoToolbar is a potentially unwanted application that offers an online search tool. It also claims to offer pop-up blocker functionality.

Note: Virus definitions dated June 26, 2015 or earlier detect this threat as TangoToolbar

Antivirus Protection Dates

  • Initial Rapid Release version October 02, 2014 revision 022
  • Latest Rapid Release version June 26, 2015 revision 008
  • Initial Daily Certified version July 28, 2011 revision 024
  • Latest Daily Certified version June 26, 2015 revision 019
  • Initial Weekly Certified release date August 03, 2011
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
When the program is executed, it creates the following folders:
  • %UserProfile%\UserData\[EIGHT RANDOM CHARACTERS FOLDER NAME ONE]
  • %UserProfile%\UserData\[EIGHT RANDOM CHARACTERS FOLDER NAME TWO]
  • %UserProfile%\UserData\[EIGHT RANDOM CHARACTERS FOLDER NAME THREE]
  • %UserProfile%\UserData\[EIGHT RANDOM CHARACTERS FOLDER NAME FOUR]


It then creates the following files:
  • C:\Documents and Settings\All Users\Desktop\Streaming Music - MediaPass.lnk
  • %UserProfile%\UserData\index.dat
  • %System%\[FOUR RANDOM NUMBERS FILE NAME ONE].dll
  • %System%\[FOUR RANDOM NUMBERS FILE NAME TWO].dll
  • %System%\[FOUR RANDOM NUMBERS FILE NAME THREE].dll


Next, the program creates the following registry subkeys:
  • HKEY_CURRENT_USER\Software\IEBarProperties
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\[UNIQUE CLSID]
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\SearchScopes
  • HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes
  • HKEY_CLASSES_ROOT\CLSID\[UNIQUE CLSID]
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\[UNIQUE CLSID]


The program then creates the following registry entries in order to change certain Internet Explorer settings:
  • HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\"Search Bar" = "http://www.tangosearch.com/?useie5=1&q="
  • HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\"Use Custom Search URL" = "1"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main\"Search Bar" = "http://www.tangosearch.com/?useie5=1&q="
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main\"Use Custom Search URL" = "1"


It also creates the following registry entries:
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\"DefaultConnectionSettings" = "[HEXADECIMAL STRING]"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Toolbar\"[UNIQUE CLSID]" = "0"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Toolbar\"[UNIQUE CLSID]" = "0"


The program then redirects users to certain commercial websites.

It also displays advertisements on the computer.
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 them using from 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 them using from 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.