McAfee > Theat Center > PUP Detail Page

Characteristics

McAfee(R) AVERT™ recognizes that this program may have legitimate uses in contexts where an authorized administrator has knowingly installed this application. If you agreed to a license agreement for this, or another bundled application, you may have legal obligations with regard to removing this software, or using the host application without this software. Please contact the software vendor for further information.

See http://vil.nai.com/vil/DATReadme.asp for a list of Program detections added to the DATs.

See http://vil.nai.com/vil/pups/configuration.htm for information about how to enable, disable, and exclude detection of legitimately installed programs.

Summary:

This is not a virus or Trojan. It is an adware application. Upon execution this application install itself as a browser helper object (BHO) for the internet explorer. It adds an internet explorer toolbar name “Crawler Toolbar”. By using the added search bar, each search will lead the user to “portal.crawler.com”.

Privacy:

No license agreement is displayed during installation, although one could be displayed by another installer if bundled with another application. No privacy policy related to the software could be found.

Installation:

File name: CTBCOMM.DLL
MD5Hash: f339564312539b3a7fcd780fe1b6c5b7

File name: CTBR.DLL
MD5Hash: 18ee810706c79911d561ae71cd151251

File name: CTOOLBAR.EXE
MD5Hash: aee3bbd9348776a12a1de7bd8f2eeb6a

File name: CUPDATE.EXE
MD5Hash: 5ea36e1ca1dfe4fcce073c731e7ee3b0

On executing the applications some of the registry keys which get added are:

• HKEY_CURRENT_USER\Software\CToolbar
• HKEY_CLASSES_ROOT\CLSID\
  {1CB20BF0-BBAE-40A7-93F4-6435FF3D0411}
• HKEY_CLASSES_ROOT\CLSID\
  {4B3803EA-5230-4DC3-A7FC-33638F3D3542}
• HKEY_CLASSES_ROOT\CLSID\
  {4D25FB7A-8902-4291-960E-9ADA051CFBBF}
• HKEY_CLASSES_ROOT\ctbcommon.Buttons
• HKEY_CLASSES_ROOT\CTBR.R404Pro
• HKEY_CLASSES_ROOT\CToolbar.TB4Client
• HKEY_CLASSES_ROOT\CToolbar.TB4Script
• HKEY_CLASSES_ROOT\CToolbar.TB4Server
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\
  CurrentVersion\Explorer\Browser Helper Objects\
  {1CB20BF0-BBAE-40A7-93F4-6435FF3D0411}
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
  Internet Explorer\
  Toolbar | “{4B3803EA-5230-4DC3-A7FC-33638F3D3542}”
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\
  CurrentVersion\Installer\UserData\Crawler
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\
  CurrentVersion\Uninstall\CToolbar_UNINSTALL

Removal

Aliases

Aliases

• Kaspersky: AdWare.Win32.Crawler.b
• Panda Antivirus: Adware/SaveNow