1. Symantec-Broadcom-Horizontal/
  2. Security Response/
  3. Attack Signatures/
  4. HTTP Clearsearch ControlInfo Transfer

HTTP Clearsearch ControlInfo Transfer

Severity: High

This attack could pose a serious security threat. You should take immediate action to stop any damage or prevent further damage from happening.

Description

This signature detects the control information transfer between the adware and its controlling server.

Additional Information

Adware.ClearSearch is an adware component that periodically contacts a Web site on the clrsch.com domain, for advertisement tracking purposes.

Affected

  • Microsoft Windows 2000 Advanced Server SP1, SP2, SP3, SP4
  • Microsoft Windows 2000 Datacenter Server SP1, SP2, SP3, SP4
  • Microsoft Windows 2000 Professional SP1, SP2, SP3, SP4
  • Microsoft Windows 2000 Resource Kit
  • Microsoft Windows 2000 Server SP1, SP2, SP3, SP4
  • Microsoft Windows 2000 Server Japanese Edition
  • Microsoft Windows 2000 Terminal Services SP1, SP2, SP3, SP4
  • Microsoft Windows 2000 Workstation rev.2031, rev.2072, rev.2195, SP1, SP2, SP3
  • Microsoft Windows 95 Build 490.R6, j, SP1, SR2
  • Microsoft Windows 98 a, b, j, SP1
  • Microsoft Windows 98 With Plus! Pack
  • Microsoft Windows 98SE
  • Microsoft Windows CE 2.0, 3.0, 4.2
  • Microsoft Windows ME
  • Microsoft Windows NT 3.5, 3.5.1, 3.5.1 SP1, 3.5.1 SP2, 3.5.1 SP3, 3.5.1 SP4, 3.5.1 SP5, 3.5.1 SP5 alpha, 4.0, 4.0 alpha, 4.0 SP1, 4.0 SP1 alpha, 4.0 SP2, 4.0 SP2 alpha, 4.0 SP3, 4.0 SP3 alpha, 4.0 SP4, 4.0 SP4 alpha, 4.0 SP5, 4.0 SP5 alpha, 4.0 SP6, 4.0 SP6 alpha, 4.0 SP6a, 4.0 SP6a alpha
  • Microsoft Windows NT 4.0 Option Pack
  • Microsoft Windows NT Enterprise Server 4.0, 4.0 SP1, 4.0 SP2, 4.0 SP3, 4.0 SP4, 4.0 SP5, 4.0 SP6, 4.0 SP6a
  • Microsoft Windows NT Server 4.0, 4.0 SP1, 4.0 SP2, 4.0 SP3, 4.0 SP4, 4.0 SP5, 4.0 SP6, 4.0 SP6a
  • Microsoft Windows NT Terminal Server 4.0, 4.0 alpha, 4.0 SP1, 4.0 SP2, 4.0 SP3, 4.0 SP4, 4.0 SP5, 4.0 SP6, 4.0 SP6a
  • Microsoft Windows NT Workstation 4.0, 4.0 SP1, 4.0 SP2, 4.0 SP3, 4.0 SP4, 4.0 SP5, 4.0 SP6, 4.0 SP6a
  • Microsoft Windows Server 2003 Datacenter Edition SP1, SP1 Beta 1
  • Microsoft Windows Server 2003 Datacenter Edition Itanium SP1, SP1 Beta 1
  • Microsoft Windows Server 2003 Datacenter x64 Edition
  • Microsoft Windows Server 2003 Enterprise Edition SP1, SP1 Beta 1
  • Microsoft Windows Server 2003 Enterprise Edition Itanium SP1, SP1 Beta 1
  • Microsoft Windows Server 2003 Enterprise x64 Edition
  • Microsoft Windows Server 2003 Standard Edition SP1, SP1 Beta 1
  • Microsoft Windows Server 2003 Standard x64 Edition
  • Microsoft Windows Server 2003 Web Edition SP1, SP1 Beta 1
  • Microsoft Windows Vista beta
  • Microsoft Windows XP
  • Microsoft Windows XP 64-bit Edition SP1
  • Microsoft Windows XP 64-bit Edition Version 2003 SP1
  • Microsoft Windows XP Embedded SP1
  • Microsoft Windows XP Home SP1, SP2
  • Microsoft Windows XP Media Center Edition SP1, SP2
  • Microsoft Windows XP Professional SP1, SP2
  • Microsoft Windows XP Professional x64 Edition
  • Microsoft Windows XP Tablet PC Edition SP1, SP2

Response

Symantec Security Response has developed a removal tool for Adware.ClearSearch. Use this removal tool first, as it is the easiest way to remove this threat.

The tool can be found here: http://securityresponse.symantec.com/avcenter/FixCSrch.exe

The current version of the tool will have a digital signature timestamp equivalent to 17/12/2004 03:28 PST

Notes:

* The date and time displayed will be adjusted to your time zone, if your computer is not set to the Pacific time zone.
* Running the Adware.ClearSearch Removal Tool may cause other programs to function incorrectly, particularly those programs with which Adware.ClearSearch was installed. The uninstaller generally identifies the programs that will not work after uninstallation.

It has been reported that a computer on which Adware.ClearSearch is installed may also have other security risks. Symantec recommends that the following steps be carried out:

1. Apply the Adware.ClearSearch Tool.
2. Update the definitions by starting the Symantec program and running LiveUpdate.
3. Run a full system scan to detect any other security risks on the computer.
4. If the scan detects any further security risks, check for removal tools at http://securityresponse.symantec.com/avcenter/security.risks.tools.list.html.
5. If there are no removal tools for the security risks that are detected, follow the manual removal instructions listed in the threat report.

Additional References

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