What Is Web Campion?

What is Web Companion?  (from Lavasoft)

Web Companion secures your browser’s settings against unauthorized changes and acts as a buffer between your browser and malicious sites. For a better, safer and lighter web experience, Ad-Aware Web Companion compliments your antivirus and browser’s protection against the latest and freshest malware and attacks – by fl…  Read more


Web Companion is a software program developed by Lavasoft. The most common release is 4.2.1846.3481, with over 33% of all installations currently using this version. During setup, the program creates a startup registration point in Windows in order to automatically start when any user boots the PC. Upon being installed, the software adds a Windows Service which is designed to run continuously in the background. Manually stopping the service has been seen to cause the program to stop functing properly. It adds a background controller service that is set to automatically run. Delaying the start of this service is possible through the service manager. A scheduled task is added to Windows Task Scheduler in order to launch the program at various scheduled times (the schedule varies depending on the version). The primary executable is named Lavasoft.AdAware.dll. The setup package generally installs about 58 files and is usually about 11.75 MB (12,316,583 bytes). Relative to the overall usage of users who have this installed on their PCs, most are running Windows 10 and Windows 7 (SP1). While about 53% of users of Web Companion come from the United States, it is also popular in Germany and United Kingdom.

Program detailsProgram details

URL: www.Lavasoft.com Installation folder: C:\Program Files\lavasoft\web companion\application Uninstaller: “C:\Program Files\Lavasoft\Web Companion\Application\Installer.exe” –uninstall Estimated size: 11.75 MB

Program filesFiles installed by Web Companion

Program module:Lavasoft.AdAware.dll
Path:C:\Program Files\lavasoft\web companion\application\Lavasoft.AdAware.dll

Additional files:

  • Installer.exe – Web Companion Installer
  • AASearchCompanion.exe – Search Companion
  • WebCompanion.exe – Web Companion
  • WebCompanionExtensionIE.dll – Powered by Lavasoft Malware URL Blocker technology, Ad-Aware Web Companion proactively protects you against malicious websites by identifying the bad guys before you ever visit them. When you visit a website that contains malware, Ad-Aware Web Companion will instantly alert you of the threat and blo
  • WebCompanionInstaller.exe
  • WebCompanionWebUI.exe – WebCompanion
  • Interop.LavasoftTcpServiceLib.dll – Assembly imported from type library ‘LavasoftTcpServiceLib’.
  • Interop.IWshRuntimeLibrary.dll – Assembly imported from type library ‘IWshRuntimeLibrary’.
  • Interop.SHDocVw.dll – Assembly imported from type library ‘SHDocVw’.
  • Interop.Shell32.dll – Assembly imported from type library ‘Shell32’.
  • Lavasoft.SearchProtect.Repositories.dll – SearchProtect.Repositories
  • Lavasoft.CSharp.Utilities.dll – Lavasoft.CSharp.Utilities
  • Lavasoft.PUP.Management.dll – Lavasoft.PUP.Management
  • Lavasoft.SearchProtect.Business.dll – SearchProtect.Business
  • Lavasoft.adblocker.dll – Lavasoft.adblocker
  • Lavasoft.SearchProtect.WinService.exe – SPWindowsService
  • Lavasoft.SysInfo.dll – Lavasoft.SysInfo
  • Lavasoft.SmartAssemblyUI.dll – UICustomization
  • Lavasoft.SearchProtect.Service.Logger.dll – ServiceLogger
  • Lavasoft.Utils.SqlLite.dll – Utils.SqlLite
  • ICSharpCode.SharpZipLib.dll (by ICSharpCode.net) – #ZipLibrary (SharpZipLibrary unlabelled version)
  • Lavasoft.Automation.dll – Automation (Lavasoft.Automation)
  • Lavasoft.SearchProtect.WcfService.dll – SPWcfLib
  • Lavasoft.AdAware.dll – AdAware
  • log4net.dll (by The Apache Software Foundation) – log4net (Apache log4net for .NET Framework 2.0)
  • Lavasoft.Utils.dll – Utils
  • Ad-Aware Web Companion.exe
  • Lavasoft.IEController.dll
  • LogicNP.EZShellExtensions.dll
  • SmartAssembly.ReportException.dll
  • SmartExceptionsCore.dll

Program behaviorsBehaviors exhibited

3 Scheduled Tasks

  • Ad-Aware Web Companion.exe is scheduled as a task with the class ‘{0195D08A-282E-4316-AC5C-0C9D5C2FC7E8}’ (runs on registration).
  • WebCompanion.exe is scheduled as a task with the class ‘{B9B2559A-1F16-4795-A5CF-40B0060553DF}’ (runs on registration).
  • WebCompanionInstaller.exe is scheduled as a task with the class ‘{189A2292-4923-48D4-AC13-9E62F04C0CE1}’ (runs on registration).

Scheduled Task (Boot/Login)

  • WebCompanion.exe is automatically launched at startup through a scheduled task named 1.


  • Lavasoft.SearchProtect.WinService.exe runs as a service named ‘IE Search Set’ (SearchProtectionService).

2 Startup Files (User Run)

  • WebCompanion.exe is loaded in the current user (HKCU) registry as an auto-starting executable named ‘Web Companion’ and executes as C:\Program Files\Lavasoft\Web Companion\Application\WebCompanion.exe –minimize.
  • AASearchCompanion.exe is loaded in the current user (HKCU) registry as an auto-starting executable named ‘Ad-Aware Search Companion’ and executes as C:\Program Files\Lavasoft\Web Companion\Application\AASearchCompanion.exe.

Startup File (All Users Run)

  • WebCompanion.exe is loaded in the all users (HKLM) registry as a startup file name ‘Web Companion’ which loads as C:\Program Files\Lavasoft\Web Companion\Application\WebCompanion.exe –minimize.

How do I remove Web Companion?

You can uninstall Web Companion from your computer by using the Add/Remove Program feature in the Window’s Control Panel.

  1. On the Start menu (for Windows 8, right-click the screen’s bottom-left corner), click Control Panel, and then, under Programs, do one of the following:
    • Windows Vista/7/8/10: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program Web Companion, click it, and then do one of the following:
    • Windows Vista/7/8/10: Click Uninstall.
    • Windows XP: Click the Remove or Change/Remove tab (to the right of the program).
  3. Follow the prompts. A progress bar shows you how long it will take to remove Web Companion.


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