Nombre: Worm/Brontok.Q.153 Descubierto: 14/08/2009 Tipo: Gusano En circulación (ITW): Sí Número de infecciones comunicadas: Medio-bajo Potencial de propagación: Medio-bajo Potencial dañino: Medio-bajo Fichero estático: Sí Tamaño: 43.476 Bytes Suma de control MD5: a042ec98487ca36544b4281c80a1a4a2 Versión del IVDF: 7.01.05.117 - viernes 14 de agosto de 2009
General Alias: • Mcafee: W32/Rontokbro.gen • Sophos: W32/Brontok-Gen • Panda: W32/Brontok.L.worm • Eset: Win32/Brontok.DJ • Bitdefender: Trojan.Generic.1934606 Plataformas / Sistemas operativos: • Windows 2000 • Windows XP • Windows 2003 Efectos secundarios: • Descarga ficheros dañinos • Suelta ficheros dañinos • Reduce las opciones de seguridad • Modificaciones en el registro Ficheros Se copia a sí mismo en las siguientes ubicaciones: • %SYSDIR% \Administrator's Setting.scr • %HOME%\Local Settings\Application Data\smss.exe • %HOME%\Start Menu\Programs\Startup\Empty.pif • %HOME%\Templates\Brengkolang.com • %WINDIR% \KesenjanganSosial.exe • %WINDIR% \ShellNew\RakyatKelaparan.exe • %HOME%\Local Settings\Application Data\lsass.exe • %SYSDIR% \cmd-brontok.exe • %HOME%\Local Settings\Application Data\csrss.exe • %HOME%\Local Settings\Application Data\inetinfo.exe • %HOME%\Local Settings\Application Data\winlogon.exe • %HOME%\Local Settings\Application Data\services.exe • %SYSDIR% \drivers\etc\hosts-Denied By-Administrator.com Sobrescribe los siguientes ficheros. – %SYSDIR% \drivers\etc\hosts – C:\autoexec.bat Elimina la copia inicial del virus. Elimina los siguientes ficheros: • %HOME%\Local Settings\Application Data\BronFoldNetDomList.txt • %HOME%\Local Settings\Application Data\Update.15.Bron.Tok.bin • %HOME%\Local Settings\Application Data\BronNetDomList.bat • %HOME%\Local Settings\Application Data\BronNPath0.txt Crea los siguientes ficheros: – %HOME%\Local Settings\Application Data\BronNPath0.txt – %HOME%\Local Settings\Application Data\Kosong.Bron.Tok.txt – %HOME%\Local Settings\Application Data\ListHost15.txt – %HOME%\Local Settings\Application Data\BronFoldNetDomList.txt – %HOME%\Local Settings\Application Data\Update.15.Bron.Tok.bin – %HOME%\Local Settings\Application Data\Bron.tok.A15.em.bin – %HOME%\Local Settings\Application Data\BronNetDomList.bat Además, el fichero es ejecutado después de haber sido creado. Este fichero batch es empleado para eliminar un fichero. Intenta descargar algunos ficheros: – La dirección es la siguiente: • http://www.geocities.com/sbllma5/********** – La dirección es la siguiente: • http://www.geocities.com/sbllma5/********** – La dirección es la siguiente: • http://www.geocities.com/sbllma5/********** Intenta ejecutar los ficheros siguientes: – Ejecuta uno de los ficheros siguientes: • explorer.exe – Ejecuta uno de los ficheros siguientes: • "%HOME%\Local Settings\Application Data\smss.exe" – Ejecuta uno de los ficheros siguientes: • "%HOME%\Local Settings\Application Data\winlogon.exe" – Ejecuta uno de los ficheros siguientes: • at /delete /y – Ejecuta uno de los ficheros siguientes: • at 17:08 /every:M,T,W,Th,F,S,Su "%HOME%\Templates\Brengkolang.com" – Ejecuta uno de los ficheros siguientes: • "%HOME%\Local Settings\Application Data\services.exe" – Ejecuta uno de los ficheros siguientes: • "%HOME%\Local Settings\Application Data\lsass.exe" – Ejecuta uno de los ficheros siguientes: • "%HOME%\Local Settings\Application Data\inetinfo.exe" – Ejecuta uno de los ficheros siguientes: • cmd /c "%HOME%\Local Settings\Application Data\BronNetDomList.bat" – Ejecuta uno de los ficheros siguientes: • ping kaskus.com -n 250 -l 747 Registro Añade las siguientes claves del registro para ejecutar los procesos al iniciar el sistema: Añade las siguientes claves al registro: – [HKLM\SOFTWARE\Classes\Interface\ {27636B00-410F-11CF-B1FF-02608C9E7553}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {32FB6780-1ED0-11CF-A988-00AA006BC149}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {32FB6780-1ED0-11CF-A988-00AA006BC149}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] • "NoFolderOptions"=dword:0x00000001 – [HKLM\SOFTWARE\Classes\Interface\ {398B7DA0-4AAB-11CF-AE2C-00AA006EBFB9}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {3E37E320-17E2-11CF-ABC4-02608C9E7553}] • "@"="IADsUser" – [HKLM\SOFTWARE\Classes\Interface\ {72B945E0-253B-11CF-A988-00AA006BC149}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {46F14FDA-232B-11D1-A808-00C04FD8D5A8}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {32FB6780-1ED0-11CF-A988-00AA006BC149}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {370DF02E-F934-11D2-BA96-00C04FB6D0D1}] • "@"="IADsDNWithString" – [HKLM\SOFTWARE\Classes\Interface\ {27636B00-410F-11CF-B1FF-02608C9E7553}] • "@"="IADsGroup" – [HKLM\SOFTWARE\Classes\Interface\ {5BB11929-AFD1-11D2-9CB9-0000F87A369E}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {28B96BA0-B330-11CF-A9AD-00AA006BC149}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {001677D0-FD16-11CE-ABC4-02608C9E7553}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {34A05B20-4AAB-11CF-AE2C-00AA006EBFB9}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {27636B00-410F-11CF-B1FF-02608C9E7553}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {124BE5C0-156E-11CF-A986-00AA006BC149}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {05792C8E-941F-11D0-8529-00C04FD8D503}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {46F14FDA-232B-11D1-A808-00C04FD8D5A8}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {46F14FDA-232B-11D1-A808-00C04FD8D5A8}] • "@"="IADsObjectOptions" – [HKLM\SOFTWARE\Classes\Interface\ {451A0030-72EC-11CF-B03B-00AA006E0975}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {5D7B33F0-31CA-11CF-A98A-00AA006BC149}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {72B945E0-253B-11CF-A988-00AA006BC149}] • "@"="IADsCollection" – [HKLM\SOFTWARE\Classes\Interface\ {34A05B20-4AAB-11CF-AE2C-00AA006EBFB9}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {451A0030-72EC-11CF-B03B-00AA006E0975}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {00E4C220-FD16-11CE-ABC4-02608C9E7553}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {68AF66E0-31CA-11CF-A98A-00AA006BC149}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {34A05B20-4AAB-11CF-AE2C-00AA006EBFB9}] • "@"="IADsResource" – [HKLM\SOFTWARE\Classes\Interface\ {306E831C-5BC7-11D1-A3B8-00C04FB950DC}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {05792C8E-941F-11D0-8529-00C04FD8D503}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {5BB11929-AFD1-11D2-9CB9-0000F87A369E}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {05792C8E-941F-11D0-8529-00C04FD8D503}] • "@"="IADsPropertyEntry" – [HKLM\SOFTWARE\Classes\Interface\ {306E831C-5BC7-11D1-A3B8-00C04FB950DC}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {00E4C220-FD16-11CE-ABC4-02608C9E7553}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {28B96BA0-B330-11CF-A9AD-00AA006BC149}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {124BE5C0-156E-11CF-A986-00AA006BC149}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {3E37E320-17E2-11CF-ABC4-02608C9E7553}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {5D7B33F0-31CA-11CF-A98A-00AA006BC149}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {370DF02E-F934-11D2-BA96-00C04FB6D0D1}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {6C6D65DC-AFD1-11D2-9CB9-0000F87A369E}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {28B96BA0-B330-11CF-A9AD-00AA006BC149}] • "@"="IADsNamespaces" – [HKLM\SOFTWARE\Classes\Interface\ {6C6D65DC-AFD1-11D2-9CB9-0000F87A369E}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {05792C8E-941F-11D0-8529-00C04FD8D503}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {5D7B33F0-31CA-11CF-A98A-00AA006BC149}] • "@"="IADsServiceOperations" – [HKLM\SOFTWARE\Classes\Interface\ {6C6D65DC-AFD1-11D2-9CB9-0000F87A369E}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {27636B00-410F-11CF-B1FF-02608C9E7553}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {3E37E320-17E2-11CF-ABC4-02608C9E7553}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {32FB6780-1ED0-11CF-A988-00AA006BC149}] • "@"="IADsPrintJob" – [HKLM\SOFTWARE\Classes\Interface\ {68AF66E0-31CA-11CF-A98A-00AA006BC149}] • "@"="IADsService" – [HKLM\SOFTWARE\Classes\Interface\ {5BB11929-AFD1-11D2-9CB9-0000F87A369E}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {68AF66E0-31CA-11CF-A98A-00AA006BC149}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {398B7DA0-4AAB-11CF-AE2C-00AA006EBFB9}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {451A0030-72EC-11CF-B03B-00AA006E0975}] • "@"="IADsMembers" – [HKLM\SOFTWARE\Classes\Interface\ {370DF02E-F934-11D2-BA96-00C04FB6D0D1}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {72B945E0-253B-11CF-A988-00AA006BC149}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {124BE5C0-156E-11CF-A986-00AA006BC149}] • "@"="IADsPrintQueueOperations" – [HKLM\SOFTWARE\Classes\Interface\ {306E831C-5BC7-11D1-A3B8-00C04FB950DC}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {6C6D65DC-AFD1-11D2-9CB9-0000F87A369E}] • "@"="IADsWinNTSystemInfo" – [HKLM\SOFTWARE\Classes\Interface\ {124BE5C0-156E-11CF-A986-00AA006BC149}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKCU\software\microsoft\windows\currentversion\Policies\System] • "DisableCMD"=dword:0x00000000 • "DisableRegistryTools"=dword:0x00000000 – [HKLM\SOFTWARE\Classes\Interface\ {001677D0-FD16-11CE-ABC4-02608C9E7553}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {306E831C-5BC7-11D1-A3B8-00C04FB950DC}] • "@"="IADsPropertyValue2" – [HKLM\SOFTWARE\Classes\Interface\ {398B7DA0-4AAB-11CF-AE2C-00AA006EBFB9}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {00E4C220-FD16-11CE-ABC4-02608C9E7553}] • "@"="IADsDomain" – [HKLM\SOFTWARE\Classes\Interface\ {001677D0-FD16-11CE-ABC4-02608C9E7553}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {5BB11929-AFD1-11D2-9CB9-0000F87A369E}] • "@"="IADsADSystemInfo" – [HKLM\SOFTWARE\Classes\Interface\ {46F14FDA-232B-11D1-A808-00C04FD8D5A8}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {72B945E0-253B-11CF-A988-00AA006BC149}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {5D7B33F0-31CA-11CF-A98A-00AA006BC149}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {451A0030-72EC-11CF-B03B-00AA006E0975}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {3E37E320-17E2-11CF-ABC4-02608C9E7553}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {00E4C220-FD16-11CE-ABC4-02608C9E7553}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {398B7DA0-4AAB-11CF-AE2C-00AA006EBFB9}] • "@"="IADsSession" – [HKLM\SOFTWARE\Classes\Interface\ {001677D0-FD16-11CE-ABC4-02608C9E7553}] • "@"="IADsContainer" – [HKLM\SOFTWARE\Classes\Interface\ {28B96BA0-B330-11CF-A9AD-00AA006BC149}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {370DF02E-F934-11D2-BA96-00C04FB6D0D1}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {68AF66E0-31CA-11CF-A98A-00AA006BC149}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {34A05B20-4AAB-11CF-AE2C-00AA006EBFB9}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" Modifica las siguientes claves del registro: – [HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot] Nuevo valor: • "AlternateShell"="cmd-brontok.exe" – [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] Nuevo valor: • "Shell"="Explorer.exe "%WINDIR% \KesenjanganSosial.exe"" – [HKCU\Software\Microsoft\Internet Explorer\Toolbar\Explorer] Nuevo valor: • "ITBarLayout"=hex:11,00,00,00,4C,00,00,00,00,00,00,00,34,00,00,00,1B,00,00,00,4E,00,00,00,01,00,00,00,20,07,00,00,A0,0F,00,00,05,00,00,00,62,05,00,00,26,00,00,00,02,00,00,00,21,07,00,00,A0,0F,00,00,04,00,00,00,21,01,00,00,A0,0F,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00 – [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced] Nuevo valor: • "Hidden"=dword:0x00000000 • "HideFileExt"=dword:0x00000001 • "ShowSuperHidden"=dword:0x00000000 – [HKCU\Software\Microsoft\Internet Explorer\Toolbar] Nuevo valor: • "Locked"=dword:0x00000001 Ficheros host El fichero host es modificado de la siguiente manera: – En este caso, las entradas existentes serán eliminadas. Datos del fichero Programa de compresión de ejecutables: Para agravar la detección y reducir el tamaño del fichero, emplea un programa de compresión de ejecutables.
Descripción insertada por Petre Galan el miércoles 23 de junio de 2010 Descripción actualizada por Petre Galan el miércoles 23 de junio de 2010
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