Author: Mohammed Malubay   
 

a variant of MSIL/WebCompanion.C potentially unwanted application(NOD32);

 PLATFORM:

Windows

 OVER ALL RISK RATING:
 DAMAGE POTENTIAL::
 DISTRIBUTION POTENTIAL::
 REPORTED INFECTION:
 INFORMATION EXPOSURE:
Low
Medium
High
Critical

  • Threat Type:
    Potentially Unwanted Application

  • Destructiveness:
    No

  • Encrypted:
     

  • In the wild::
    Yes

  OVERVIEW

INFECTION CHANNEL: Descargado de Internet, Eliminado por otro tipo de malware

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Usa una interfaz de usuario.

  TECHNICAL DETAILS

File size: 512,464 bytes
File type: EXE
INITIAL SAMPLES RECEIVED DATE: 22 июля 2020
PAYLOAD: Connects to URLs/IPs, Displays windows

Detalles de entrada

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Instalación

Agrega las carpetas siguientes:

  • %Program Files%\Lavasoft
  • %Program Files%\Lavasoft\Web Companion
  • %Program Files%\Lavasoft\Web Companion\Application
  • %Program Files%\Lavasoft\Web Companion\Application\de-DE
  • %Program Files%\Lavasoft\Web Companion\Application\en-US
  • %Program Files%\Lavasoft\Web Companion\Application\es-ES
  • %Program Files%\Lavasoft\Web Companion\Application\fr-CA
  • %Program Files%\Lavasoft\Web Companion\Application\it-IT
  • %Program Files%\Lavasoft\Web Companion\Application\ja-JP
  • %Program Files%\Lavasoft\Web Companion\Application\pt-BR
  • %Program Files%\Lavasoft\Web Companion\Application\ru-RU
  • %Program Files%\Lavasoft\Web Companion\Application\tr-TR
  • %Program Files%\Lavasoft\Web Companion\Application\x64
  • %Program Files%\Lavasoft\Web Companion\Application\x86
  • %Program Files%\Lavasoft\Web Companion\Application\zh-CHS
  • %Program Files%\Lavasoft\Web Companion\Application\zh-Hans
  • %ProgramData%\Lavasoft\
  • %ProgramData%\Lavasoft\Web Companion
  • %ProgramData%\Lavasoft\Web Companion\Options

(Nota: %Program Files% es la carpeta Archivos de programa predeterminada, que suele estar en C:\Archivos de programa).

)

Infiltra los archivos siguientes:

  • %Program Files%\Lavasoft\Web Companion\Application\Ad-Aware Web Companion.exe
  • %Program Files%\Lavasoft\Web Companion\Application\BCUEngineS.dll
  • %Program Files%\Lavasoft\Web Companion\Application\BCUSDK.dll
  • %Program Files%\Lavasoft\Web Companion\Application\DotNetZip.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Esent.Interop.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Extension\@wcextensionff.xpi
  • %Program Files%\Lavasoft\Web Companion\Application\ICSharpCode.SharpZipLib.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Interop.IWshRuntimeLibrary.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Interop.LavasoftTcpServiceLib.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Interop.SHDocVw.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Interop.Shell32.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Interop.WUApiLib.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Ionic.Zip.dll
  • %Program Files%\Lavasoft\Web Companion\Application\LZ4.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.AppCore.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Automation.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.CSharp.Utilities.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Compression.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Events.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Extension.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.IEController.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Omni.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.SearchProtect.Business.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.SearchProtect.Repositories.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Settings.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.SysInfo.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Utils.SqlLite.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Utils.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.Service.Logger.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.WcfService.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.WinService.exe
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.WinService.exe.config
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.adblocker.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Microsoft.mshtml.dll
  • %Program Files%\Lavasoft\Web Companion\Application\MozCompressor.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Newtonsoft.Json.dll
  • %Program Files%\Lavasoft\Web Companion\Application\System.Data.SQLite.dll
  • %Program Files%\Lavasoft\Web Companion\Application\WcCommunication.exe
  • %Program Files%\Lavasoft\Web Companion\Application\WcCommunication.exe.config
  • %Program Files%\Lavasoft\Web Companion\Application\WebCompanion.Loader.exe
  • %Program Files%\Lavasoft\Web Companion\Application\WebCompanion.exe
  • %Program Files%\Lavasoft\Web Companion\Application\WebCompanion.exe.config
  • %Program Files%\Lavasoft\Web Companion\Application\WebCompanionExtensionIE.dll
  • %Program Files%\Lavasoft\Web Companion\Application\WebCompanionIcon.ico
  • %Program Files%\Lavasoft\Web Companion\Application\WebCompanionIcon_Pro.ico
  • %Program Files%\Lavasoft\Web Companion\Application\WebCompanionInstaller.exe
  • %Program Files%\Lavasoft\Web Companion\Application\WebCompanionInstaller.exe.config
  • %Program Files%\Lavasoft\Web Companion\Application\WebCompanionInstaller.pdb
  • %Program Files%\Lavasoft\Web Companion\Application\WebcompaionReimageIcon.ico
  • %Program Files%\Lavasoft\Web Companion\Application\de-DE\WebCompanion.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\de-DE\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\en-US\WebCompanion.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\en-US\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\es-ES\WebCompanion.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\es-ES\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\fr-CA\WebCompanion.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\fr-CA\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\it-IT\WebCompanion.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\it-IT\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\ja-JP\WebCompanion.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\ja-JP\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\liblz4.dll
  • %Program Files%\Lavasoft\Web Companion\Application\log4net.dll
  • %Program Files%\Lavasoft\Web Companion\Application\pt-BR\WebCompanion.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\pt-BR\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\ru-RU\WebCompanion.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\ru-RU\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\tr-TR\WebCompanion.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\tr-TR\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\ucrtbased.dll
  • %Program Files%\Lavasoft\Web Companion\Application\vcruntime140d.dll
  • %Program Files%\Lavasoft\Web Companion\Application\x64\SQLite.Interop.dll
  • %Program Files%\Lavasoft\Web Companion\Application\x86\SQLite.Interop.dll
  • %Program Files%\Lavasoft\Web Companion\Application\zh-CHS\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\zh-Hans\WebCompanion.resources.dll
  • %ProgramData%\Lavasoft\Web Companion\Options\Statistics.txt → contains install id

(Nota: %Program Files% es la carpeta Archivos de programa predeterminada, que suele estar en C:\Archivos de programa).

)

Agrega los procesos siguientes:

  • "%User Temp%\wctmp_{random numbers}\WcInstaller.exe" --nanouniqueid={Generated Unique ID} --prod
  • .\WebCompanionInstaller.exe --prod
  • .\WebCompanionInstaller.exe --prod --nanouniqueid={Generated Unique ID} --prod
  • To create the service:
    • "sc.exe" Create "WCAssistantService" binPath= "%Program Files%\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.WinService.exe" DisplayName= "WC Assistant" start= auto
    • "sc.exe" description "WCAssistantService" "Ad-Aware Web Companion Internet security service"
    • "sc.exe" failure WCAssistantService reset= 30 actions= restart/60000

(Nota: %User Temp% es la carpeta Temp del usuario activo, que en el caso de Windows 2000(32-bit), XP y Server 2003(32-bit) suele estar en C:\Documents and Settings\{nombre de usuario}\Local Settings\Temp y en el case de Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) y 10(64-bit) en C:\Users\{nombre de usuario}\AppData\Local\Temp).

. %Program Files% es la carpeta Archivos de programa predeterminada, que suele estar en C:\Archivos de programa).

)

Otras modificaciones del sistema

Agrega las siguientes entradas de registro:

HKEY_LOCAL_MACHINE\SOFTWARE\Lavasoft\
Web Companion
MachineId = {Generated Machine ID}

Otros detalles

Agrega las siguientes entradas de registro como parte de la rutina de instalación:

HKEY_LOCAL_MACHINE\SOFTWARE\Lavasoft

HKEY_LOCAL_MACHINE\SOFTWARE\Lavasoft\
Web Companion

Usa la interfaz de usuario siguiente:

Hace lo siguiente:

  • It is capable of making default home page and/or default search engine to the following:
    • Bing
    • Yahoo!
    • Yandex
    • Keep current settings
  • It connects to the following URL to access its GUI's design:
    • http://www.{BLOCKED}panion.com/installer/consent_2?culture=en&hp=1&se=1 → contains the installer interface (the instance after clicking install)
    • http://{BLOCKED}panion.com/installer/css/styles.css?1596529652 → contains style config for installer
    • http://wc-tracking.{BLOCKED}ft.com/Install.asmx

  SOLUTION

Minimum scan engine: 9.850
SSAPI Pattern-Datei: 2.317.00
SSAPI Pattern veröffentlicht am: 30 de июля de 2020

Step 1

Los usuarios de Windows ME y XP, antes de llevar a cabo cualquier exploración, deben comprobar que tienen desactivada la opción Restaurar sistema para permitir la exploración completa del equipo.

Step 2

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Eliminar este valor del Registro

[ learnMore ]

Importante: si modifica el Registro de Windows incorrectamente, podría hacer que el sistema funcione mal de manera irreversible. Lleve a cabo este paso solo si sabe cómo hacerlo o si puede contar con ayuda de su administrador del sistema. De lo contrario, lea este artículo de Microsoft antes de modificar el Registro del equipo.

  • In HKEY_LOCAL_MACHINE\SOFTWARE\Lavasoft\Web Companion
    • MachineId = {Generated Machine ID}

Step 4

Eliminar esta clave del Registro

[ learnMore ]

Importante: si modifica el Registro de Windows incorrectamente, podría hacer que el sistema funcione mal de manera irreversible. Lleve a cabo este paso solo si sabe cómo hacerlo o si puede contar con ayuda de su administrador del sistema. De lo contrario, lea este artículo de Microsoft antes de modificar el Registro del equipo.

  • In HKEY_LOCAL_MACHINE\SOFTWARE\Lavasoft
    • (null)
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Lavasoft\Web Companion
    • (null)

Step 5

Buscar y eliminar estos archivos

[ learnMore ]
Puede que algunos de los archivos del componente estén ocultos. Asegúrese de que tiene activada la casilla Buscar archivos y carpetas ocultos en la opción "Más opciones avanzadas" para que el resultado de la búsqueda incluya todos los archivos y carpetas ocultos.
  • %Program Files%\Lavasoft\Web Companion\Application\Ad-Aware Web Companion.exe
  • %Program Files%\Lavasoft\Web Companion\Application\BCUEngineS.dll
  • %Program Files%\Lavasoft\Web Companion\Application\BCUSDK.dll
  • %Program Files%\Lavasoft\Web Companion\Application\DotNetZip.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Esent.Interop.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Extension\@wcextensionff.xpi
  • %Program Files%\Lavasoft\Web Companion\Application\ICSharpCode.SharpZipLib.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Interop.IWshRuntimeLibrary.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Interop.LavasoftTcpServiceLib.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Interop.SHDocVw.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Interop.Shell32.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Interop.WUApiLib.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Ionic.Zip.dll
  • %Program Files%\Lavasoft\Web Companion\Application\LZ4.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.AppCore.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Automation.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.CSharp.Utilities.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Compression.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Events.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Extension.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.IEController.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Omni.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.SearchProtect.Business.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.SearchProtect.Repositories.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Settings.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.SysInfo.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Utils.SqlLite.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Utils.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.Service.Logger.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.WcfService.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.WinService.exe
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.WinService.exe.config
  • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.adblocker.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Microsoft.mshtml.dll
  • %Program Files%\Lavasoft\Web Companion\Application\MozCompressor.dll
  • %Program Files%\Lavasoft\Web Companion\Application\Newtonsoft.Json.dll
  • %Program Files%\Lavasoft\Web Companion\Application\System.Data.SQLite.dll
  • %Program Files%\Lavasoft\Web Companion\Application\WcCommunication.exe
  • %Program Files%\Lavasoft\Web Companion\Application\WcCommunication.exe.config
  • %Program Files%\Lavasoft\Web Companion\Application\WebCompanion.Loader.exe
  • %Program Files%\Lavasoft\Web Companion\Application\WebCompanion.exe
  • %Program Files%\Lavasoft\Web Companion\Application\WebCompanion.exe.config
  • %Program Files%\Lavasoft\Web Companion\Application\WebCompanionExtensionIE.dll
  • %Program Files%\Lavasoft\Web Companion\Application\WebCompanionIcon.ico
  • %Program Files%\Lavasoft\Web Companion\Application\WebCompanionIcon_Pro.ico
  • %Program Files%\Lavasoft\Web Companion\Application\WebCompanionInstaller.exe
  • %Program Files%\Lavasoft\Web Companion\Application\WebCompanionInstaller.exe.config
  • %Program Files%\Lavasoft\Web Companion\Application\WebCompanionInstaller.pdb
  • %Program Files%\Lavasoft\Web Companion\Application\WebcompaionReimageIcon.ico
  • %Program Files%\Lavasoft\Web Companion\Application\de-DE\WebCompanion.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\de-DE\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\en-US\WebCompanion.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\en-US\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\es-ES\WebCompanion.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\es-ES\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\fr-CA\WebCompanion.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\fr-CA\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\it-IT\WebCompanion.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\it-IT\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\ja-JP\WebCompanion.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\ja-JP\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\liblz4.dll
  • %Program Files%\Lavasoft\Web Companion\Application\log4net.dll
  • %Program Files%\Lavasoft\Web Companion\Application\pt-BR\WebCompanion.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\pt-BR\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\ru-RU\WebCompanion.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\ru-RU\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\tr-TR\WebCompanion.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\tr-TR\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\ucrtbased.dll
  • %Program Files%\Lavasoft\Web Companion\Application\vcruntime140d.dll
  • %Program Files%\Lavasoft\Web Companion\Application\x64\SQLite.Interop.dll
  • %Program Files%\Lavasoft\Web Companion\Application\x86\SQLite.Interop.dll
  • %Program Files%\Lavasoft\Web Companion\Application\zh-CHS\WebCompanionInstaller.resources.dll
  • %Program Files%\Lavasoft\Web Companion\Application\zh-Hans\WebCompanion.resources.dll
  • %ProgramData%\Lavasoft\Web Companion\Options\Statistics.txt
DATA_GENERIC_FILENAME_1
  • En la lista desplegable Buscar en, seleccione Mi PC y pulse Intro.
  • Una vez haya encontrado el archivo, selecciónelo y, a continuación, pulse MAYÚS+SUPR para eliminarlo definitivamente.
  • Repita los pasos 2 a 4 con el resto de archivos:
      • %Program Files%\Lavasoft\Web Companion\Application\Ad-Aware Web Companion.exe
      • %Program Files%\Lavasoft\Web Companion\Application\BCUEngineS.dll
      • %Program Files%\Lavasoft\Web Companion\Application\BCUSDK.dll
      • %Program Files%\Lavasoft\Web Companion\Application\DotNetZip.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Esent.Interop.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Extension\@wcextensionff.xpi
      • %Program Files%\Lavasoft\Web Companion\Application\ICSharpCode.SharpZipLib.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Interop.IWshRuntimeLibrary.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Interop.LavasoftTcpServiceLib.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Interop.SHDocVw.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Interop.Shell32.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Interop.WUApiLib.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Ionic.Zip.dll
      • %Program Files%\Lavasoft\Web Companion\Application\LZ4.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.AppCore.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Automation.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.CSharp.Utilities.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Compression.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Events.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Extension.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.IEController.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Omni.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.SearchProtect.Business.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.SearchProtect.Repositories.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Settings.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.SysInfo.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Utils.SqlLite.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.Utils.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.Service.Logger.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.WcfService.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.WinService.exe
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.WinService.exe.config
      • %Program Files%\Lavasoft\Web Companion\Application\Lavasoft.adblocker.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Microsoft.mshtml.dll
      • %Program Files%\Lavasoft\Web Companion\Application\MozCompressor.dll
      • %Program Files%\Lavasoft\Web Companion\Application\Newtonsoft.Json.dll
      • %Program Files%\Lavasoft\Web Companion\Application\System.Data.SQLite.dll
      • %Program Files%\Lavasoft\Web Companion\Application\WcCommunication.exe
      • %Program Files%\Lavasoft\Web Companion\Application\WcCommunication.exe.config
      • %Program Files%\Lavasoft\Web Companion\Application\WebCompanion.Loader.exe
      • %Program Files%\Lavasoft\Web Companion\Application\WebCompanion.exe
      • %Program Files%\Lavasoft\Web Companion\Application\WebCompanion.exe.config
      • %Program Files%\Lavasoft\Web Companion\Application\WebCompanionExtensionIE.dll
      • %Program Files%\Lavasoft\Web Companion\Application\WebCompanionIcon.ico
      • %Program Files%\Lavasoft\Web Companion\Application\WebCompanionIcon_Pro.ico
      • %Program Files%\Lavasoft\Web Companion\Application\WebCompanionInstaller.exe
      • %Program Files%\Lavasoft\Web Companion\Application\WebCompanionInstaller.exe.config
      • %Program Files%\Lavasoft\Web Companion\Application\WebCompanionInstaller.pdb
      • %Program Files%\Lavasoft\Web Companion\Application\WebcompaionReimageIcon.ico
      • %Program Files%\Lavasoft\Web Companion\Application\de-DE\WebCompanion.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\de-DE\WebCompanionInstaller.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\en-US\WebCompanion.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\en-US\WebCompanionInstaller.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\es-ES\WebCompanion.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\es-ES\WebCompanionInstaller.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\fr-CA\WebCompanion.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\fr-CA\WebCompanionInstaller.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\it-IT\WebCompanion.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\it-IT\WebCompanionInstaller.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\ja-JP\WebCompanion.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\ja-JP\WebCompanionInstaller.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\liblz4.dll
      • %Program Files%\Lavasoft\Web Companion\Application\log4net.dll
      • %Program Files%\Lavasoft\Web Companion\Application\pt-BR\WebCompanion.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\pt-BR\WebCompanionInstaller.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\ru-RU\WebCompanion.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\ru-RU\WebCompanionInstaller.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\tr-TR\WebCompanion.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\tr-TR\WebCompanionInstaller.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\ucrtbased.dll
      • %Program Files%\Lavasoft\Web Companion\Application\vcruntime140d.dll
      • %Program Files%\Lavasoft\Web Companion\Application\x64\SQLite.Interop.dll
      • %Program Files%\Lavasoft\Web Companion\Application\x86\SQLite.Interop.dll
      • %Program Files%\Lavasoft\Web Companion\Application\zh-CHS\WebCompanionInstaller.resources.dll
      • %Program Files%\Lavasoft\Web Companion\Application\zh-Hans\WebCompanion.resources.dll
      • %ProgramData%\Lavasoft\Web Companion\Options\Statistics.txt

    • Step 6

    Buscar y eliminar esta carpeta

    [ learnMore ]
    Asegúrese de que tiene activada la casilla Buscar archivos y carpetas ocultos en la opción Más opciones avanzadas para que el resultado de la búsqueda incluya todas las carpetas ocultas.
    • %Program Files%\Lavasoft
    • %Program Files%\Lavasoft\Web Companion
    • %Program Files%\Lavasoft\Web Companion\Application
    • %Program Files%\Lavasoft\Web Companion\Application\de-DE
    • %Program Files%\Lavasoft\Web Companion\Application\en-US
    • %Program Files%\Lavasoft\Web Companion\Application\es-ES
    • %Program Files%\Lavasoft\Web Companion\Application\fr-CA
    • %Program Files%\Lavasoft\Web Companion\Application\it-IT
    • %Program Files%\Lavasoft\Web Companion\Application\ja-JP
    • %Program Files%\Lavasoft\Web Companion\Application\pt-BR
    • %Program Files%\Lavasoft\Web Companion\Application\ru-RU
    • %Program Files%\Lavasoft\Web Companion\Application\tr-TR
    • %Program Files%\Lavasoft\Web Companion\Application\x64
    • %Program Files%\Lavasoft\Web Companion\Application\x86
    • %Program Files%\Lavasoft\Web Companion\Application\zh-CHS
    • %Program Files%\Lavasoft\Web Companion\Application\zh-Hans
    • %ProgramData%\Lavasoft\
    • %ProgramData%\Lavasoft\Web Companion
    • %ProgramData%\Lavasoft\Web Companion\Options

    Step 7

    Desactivar este servicio de malware

    [ learnMore ]
      • WCAssistantService

    Step 8

    Explorar el equipo con su producto de Trend Micro para eliminar los archivos detectados como PUA.Win32.WebCompanion.BQ En caso de que el producto de Trend Micro ya haya limpiado, eliminado o puesto en cuarentena los archivos detectados, no serán necesarios más pasos. Puede optar simplemente por eliminar los archivos en cuarentena. Consulte esta página de Base de conocimientos para obtener más información.


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