Threat Explorer

The Threat Explorer is a comprehensive resource consumers can turn to for daily, accurate, up-to-date information on the latest threats, risks and vulnerabilities.



13 February 2007
Risk Impact:
File Names:
Systems Affected:


Adware.Syslibie is a Browser Helper Object that redirects your Web browser to different Web sites.


Files are detected as Adware.Syslibie
  • Presence of the read-only, system file C:\Syslibie.dll
  • Presence of the registry key {F195A1A9-4033-4E5B-B85C-848C3E31A83A}

Antivirus Protection Dates

  • Initial Rapid Release version 02 October 2014 revision 022
  • Latest Rapid Release version 07 May 2019 revision 006
  • Initial Daily Certified version 25 May 2004
  • Latest Daily Certified version 07 May 2019 revision 008
  • Initial Weekly Certified release date 26 May 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

When Adware.Syslibie is executed, it performs the following actions:
  1. Registers itself as a Browser Helper Object using Regsvr32.exe.

  2. Monitors for certain URLs and redirects you to pay-per-click sites when those URLs are entered.

The following instructions pertain to all Symantec antivirus products that support Security Risk detection.
  1. Update the definitions.
  2. Unregister the syslibie.dll file.
  3. Run a full system scan and delete all the files detected as Adware.Syslibie.
For specific details on each of these steps, read the following instructions.

1. To update the definitions
To obtain the most recent definitions, start your Symantec program and run LiveUpdate.

2. To unregister the Syslibie.dll file
  1. Click Start > Run. (The Run dialog box appears.)
  2. Type, or copy and paste, the following text:

    regsvr32 /u syslibie.dll

    then click OK.

    If a dialog box confirming this action appears, click OK.

3. To scan for and delete the files
  1. Start your Symantec antivirus program, and then run a full system scan.
  2. If any files are detected as Adware.Syslibie, click Delete.

    Note: If your Symantec antivirus product reports that it cannot delete a detected file, write down the path and file name. Then use Windows Explorer to locate and delete the file.