PUA.Win32.YTDownloader.AQ
Riskware/YTDDownloader (Fortinet); a variant of Win32/YTDDownloader.H potentially unwanted application (NOD32)
Windows
Tipo di minaccia informatica:
Potentially Unwanted Application
Distruttivo?:
No
Crittografato?:
No
In the wild::
Sì
Panoramica e descrizione
It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Se conecta a determinados sitios Web para enviar y recibir información.
Dettagli tecnici
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 los procesos siguientes:
- "%Windows%\explorer.exe" "http://www.{BLOCKED}nloader.com/thankyou.html?{random characters}"
- "%Windows%\explorer.exe" "%Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe"
Crea las carpetas siguientes:
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_output
- %Program Files%\GreenTree Applications\YTD Video Downloader
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\codec
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\access
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter
- %Program Files%\GreenTree Applications
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_filter
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output
- %All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_mixer
(Nota: %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_CURRENT_USER\Software\GreenTree Applications\
YTD
ISN = "{Hex Value}"
HKEY_CURRENT_USER\Software\GreenTree Applications\
YTD
(Default) = "%Program Files%\GreenTree Applications\YTD Video Downloader"
HKEY_CURRENT_USER\Software\GreenTree Applications\
YTD
Language = "1033"
HKEY_CURRENT_USER\Software\GreenTree Applications\
YTD
kitType = "ytdd"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
DisplayIcon = "%Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe,0"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
DisplayName = "YTD Video Downloader 5.9.17"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
UninstallString = "%Program Files%\GreenTree Applications\YTD Video Downloader\uninstall.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
Publisher = "GreenTree Applications SRL"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
URLInfoAbout = "http://www.{BLOCKED}nloader.com"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
NoModify = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
NoRepair = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
InstallDir = "%Program Files%\GreenTree Applications\YTD Video Downloader"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
InstallLocation = "%Program Files%\GreenTree Applications\YTD Video Downloader"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
MainApp = "%Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
VersionMajor = "5"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
VersionMinor = "9"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{{GUID}}
DisplayVersion = "5.9.17"
Rutina de infiltración
Infiltra los archivos siguientes:
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1061.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res2052.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\manual.bat
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1036.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_mixer\libfloat_mixer_plugin.dll
- %All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader\YTD Video Downloader.lnk
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1060.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1048.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe
- %Program Files%\GreenTree Applications\YTD Video Downloader\LICENSE
- %Program Files%\GreenTree Applications\YTD Video Downloader\Uninstall.exe
- %Program Files%\GreenTree Applications\YTD Video Downloader\FFMPEG.EXE
- %Program Files%\GreenTree Applications\YTD Video Downloader\scripts.yds
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1033.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\COPYING.LGPLv2
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1053.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1040.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1052.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\codec\libavcodec_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_mixer\libinteger_mixer_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libdrawable_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1035.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libvmem_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libdirect3d_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\COPYING.LGPLv3
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res2074.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1044.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1051.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1031.ini
- %All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader\Web site.url
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1038.ini
- %All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader\Uninstall.lnk
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1034.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\access\libfilesystem_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libwingdi_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_filter\libswscale_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_output\libdirectsound_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res9999.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\librtmp.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter\libugly_resampler_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter\libtrivial_channel_mixer_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1059.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\COPYING.Apachev2
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1030.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1043.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1029.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\libvlc.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\libvlccore.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1045.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1026.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter\libaudio_format_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1032.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1025.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res2070.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1055.ini
- %System Root%\Users\Public\Desktop\YTD Video Downloader.lnk
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1050.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1049.ini
(Nota: %Program Files% es la carpeta Archivos de programa predeterminada, que suele estar en C:\Archivos de programa).
. %System Root% es la carpeta raíz, normalmente C:\. También es la ubicación del sistema operativo).)Otros detalles
Se conecta al sitio Web siguiente para enviar y recibir información:
- http://www.{BLOCKED}nloader.com/images/pixel.gif?{random characters}
- http://download.{BLOCKED}nloader.com/offers/offers.php?id=avast
- http://www.{BLOCKED}nloader.com/thankyou.html?{random characters}
- http://www.{BLOCKED}nloader.com/ads/sah/win249.php?{random characters}
- http://www.{BLOCKED}nloader.com/styles2v.css?20200411
- http://www.{BLOCKED}nloader.com/js/main.js?20200411
- http://www.{BLOCKED}nloader.com/images/EN_770x450.png
- http://www.{BLOCKED}nloader.com/images/ultravpn.jpg
- http://www.{BLOCKED}nloader.com/images/spritev2.png
- http://www.{BLOCKED}nloader.com/favicon.ico
- http://dl.{BLOCKED}nloader.com
Hace lo siguiente:
- It displays the following during installation:
Soluzioni
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
Identificar y terminar los archivos detectados como PUA.Win32.YTDownloader.AQ
- Para los usuarios de Windows 98 y ME, puede que el Administrador de tareas de Windows no muestre todos los procesos en ejecución. En tal caso, utilice un visor de procesos de una tercera parte (preferiblemente, el Explorador de procesos) para terminar el archivo de malware/grayware/spyware. Puede descargar la herramienta en cuestión aquí.
- Si el archivo detectado aparece en el Administrador de tareas o en el Explorador de procesos, pero no puede eliminarlo, reinicie el equipo en modo seguro. Para ello, consulte este enlace para obtener todos los pasos necesarios.
- Si el archivo detectado no se muestra en el Administrador de tareas o el Explorador de procesos, prosiga con los pasos que se indican a continuación.
Step 3
Eliminar este valor del Registro
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_CURRENT_USER\Software\GreenTree Applications\YTD
- ISN = "{Hex Value}"
- ISN = "{Hex Value}"
- In HKEY_CURRENT_USER\Software\GreenTree Applications\YTD
- (Default) = "%Program Files%\GreenTree Applications\YTD Video Downloader"
- (Default) = "%Program Files%\GreenTree Applications\YTD Video Downloader"
- In HKEY_CURRENT_USER\Software\GreenTree Applications\YTD
- Language = "1033"
- Language = "1033"
- In HKEY_CURRENT_USER\Software\GreenTree Applications\YTD
- kitType = "ytdd"
- kitType = "ytdd"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- DisplayIcon = "%Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe,0"
- DisplayIcon = "%Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe,0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- DisplayName = "YTD Video Downloader 5.9.17"
- DisplayName = "YTD Video Downloader 5.9.17"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- UninstallString = "%Program Files%\GreenTree Applications\YTD Video Downloader\uninstall.exe"
- UninstallString = "%Program Files%\GreenTree Applications\YTD Video Downloader\uninstall.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- Publisher = "GreenTree Applications SRL"
- Publisher = "GreenTree Applications SRL"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- URLInfoAbout = "http://www.{BLOCKED}nloader.com"
- URLInfoAbout = "http://www.{BLOCKED}nloader.com"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- NoModify = "1"
- NoModify = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- NoRepair = "1"
- NoRepair = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- InstallDir = "%Program Files%\GreenTree Applications\YTD Video Downloader"
- InstallDir = "%Program Files%\GreenTree Applications\YTD Video Downloader"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- InstallLocation = "%Program Files%\GreenTree Applications\YTD Video Downloader"
- InstallLocation = "%Program Files%\GreenTree Applications\YTD Video Downloader"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- MainApp = "%Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe"
- MainApp = "%Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- VersionMajor = "5"
- VersionMajor = "5"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- VersionMinor = "9"
- VersionMinor = "9"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{{GUID}}
- DisplayVersion = "5.9.17"
- DisplayVersion = "5.9.17"
Step 4
Buscar y eliminar estos archivos
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1061.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res2052.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\manual.bat
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1036.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_mixer\libfloat_mixer_plugin.dll
- %All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader\YTD Video Downloader.lnk
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1060.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1048.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\ytd.exe
- %Program Files%\GreenTree Applications\YTD Video Downloader\LICENSE
- %Program Files%\GreenTree Applications\YTD Video Downloader\Uninstall.exe
- %Program Files%\GreenTree Applications\YTD Video Downloader\FFMPEG.EXE
- %Program Files%\GreenTree Applications\YTD Video Downloader\scripts.yds
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1033.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\COPYING.LGPLv2
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1053.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1040.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1052.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\codec\libavcodec_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_mixer\libinteger_mixer_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libdrawable_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1035.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libvmem_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libdirect3d_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\COPYING.LGPLv3
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res2074.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1044.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1051.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1031.ini
- %All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader\Web site.url
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1038.ini
- %All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader\Uninstall.lnk
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1034.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\access\libfilesystem_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output\libwingdi_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_filter\libswscale_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_output\libdirectsound_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res9999.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\librtmp.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter\libugly_resampler_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter\libtrivial_channel_mixer_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1059.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\COPYING.Apachev2
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1030.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1043.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1029.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\libvlc.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\libvlccore.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1045.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1026.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter\libaudio_format_plugin.dll
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1032.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1025.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res2070.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1055.ini
- %System Root%\Users\Public\Desktop\YTD Video Downloader.lnk
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1050.ini
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang\res1049.ini
Step 5
Buscar y eliminar estas carpetas
- %Program Files%\GreenTree Applications\YTD Video Downloader\Lang
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_output
- %Program Files%\GreenTree Applications\YTD Video Downloader
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\codec
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\access
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_filter
- %Program Files%\GreenTree Applications
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_filter
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\video_output
- %All Users Profile%\Microsoft\Windows\Start Menu\Programs\YTD Video Downloader
- %Program Files%\GreenTree Applications\YTD Video Downloader\plugins\audio_mixer
Step 6
Explorar el equipo con su producto de Trend Micro para eliminar los archivos detectados como PUA.Win32.YTDownloader.AQ 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.
Sondaggio