BKDR_VB.CF
Windows 2000, Windows XP, Windows Server 2003
Tipo de malware
Backdoor
Destructivo?
No
Cifrado
In the Wild:
Sí
Resumen y descripción
Detalles técnicos
Otras modificaciones del sistema
Agrega las siguientes entradas de registro como parte de la rutina de instalación:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Control
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\
0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{E7BC34A0-BA86-11CF-84B1-CBC2DA68BF6C}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{E7BC34A0-BA86-11CF-84B1-CBC2DA68BF6C}\1.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{E7BC34A0-BA86-11CF-84B1-CBC2DA68BF6C}\1.0\
FLAGS
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{E7BC34A0-BA86-11CF-84B1-CBC2DA68BF6C}\1.0\
0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{E7BC34A0-BA86-11CF-84B1-CBC2DA68BF6C}\1.0\
0\win32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{E7BC34A0-BA86-11CF-84B1-CBC2DA68BF6C}\1.0\
HELPDIR
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{E7BC34A1-BA86-11CF-84B1-CBC2DA68BF6C}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{E7BC34A1-BA86-11CF-84B1-CBC2DA68BF6C}\ProxyStubClsid
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{E7BC34A1-BA86-11CF-84B1-CBC2DA68BF6C}\ProxyStubClsid32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{E7BC34A1-BA86-11CF-84B1-CBC2DA68BF6C}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{E7BC34A2-BA86-11CF-84B1-CBC2DA68BF6C}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{E7BC34A2-BA86-11CF-84B1-CBC2DA68BF6C}\ProxyStubClsid
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{E7BC34A2-BA86-11CF-84B1-CBC2DA68BF6C}\ProxyStubClsid32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{E7BC34A2-BA86-11CF-84B1-CBC2DA68BF6C}\TypeLib
HKEY_CLASSES_ROOT\CLSID\{E7BC34A3-BA86-11CF-84B1-CBC2DA68BF6C}
HKEY_CLASSES_ROOT\NTService.Control.1
Agrega las siguientes entradas de registro:
HKEY_CURRENT_USER\Software\Microsoft\
DirectInput\MostRecentApplication
Version = "{random values}"
HKEY_CURRENT_USER\Software\Microsoft\
DirectInput\MostRecentApplication
Name = "{malware file name}"
HKEY_CURRENT_USER\Software\Microsoft\
DirectInput\MostRecentApplication
Id = "{malware file name}4b55e48400055000"
HKEY_CURRENT_USER\Software\Microsoft\
DirectInput\MostRecentApplication
MostRecentStart = "{random values}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{E7BC34A1-BA86-11CF-84B1-CBC2DA68BF6C}\TypeLib
Version = "1.0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{E7BC34A2-BA86-11CF-84B1-CBC2DA68BF6C}\TypeLib
Version = "1.0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
NTService.Control.1
CLSID = "{E7BC34A3-BA86-11CF-84B1-CBC2DA68BF6C}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E7BC34A3-BA86-11CF-84B1-CBC2DA68BF6C}
ProgID = "NTService.Control.1"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E7BC34A3-BA86-11CF-84B1-CBC2DA68BF6C}
InprocServer32 = "%System%\ntsvc.ocx"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E7BC34A3-BA86-11CF-84B1-CBC2DA68BF6C}
ToolboxBitmap32 = "%System%\ntsvc.ocx, 1"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E7BC34A3-BA86-11CF-84B1-CBC2DA68BF6C}
MiscStatus = "0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E7BC34A3-BA86-11CF-84B1-CBC2DA68BF6C}
MiscStatus\1 = "199824"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E7BC34A3-BA86-11CF-84B1-CBC2DA68BF6C}
TypeLib = "{E7BC34A0-BA86-11CF-84B1-CBC2DA68BF6C}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E7BC34A3-BA86-11CF-84B1-CBC2DA68BF6C}
Version = "1.0"
Modifica las siguientes entradas de registro:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32
ThreadingModel = "Apartment"
(Note: The default value data of the said registry entry is Apartment.)
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib
Version = "1.0"
(Note: The default value data of the said registry entry is 1.0.)
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib
Version = "1.0"
(Note: The default value data of the said registry entry is 1.0.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\Eventlog\Application\
Tlntsvr
EventMessageFile = "%System%\tlntsvr.exe;%System%\xpsp1res.dll"
(Note: The default value data of the said registry entry is %Windows%\system32\tlntsvr.exe;%Windows%\system32\xpsp1res.dll.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\Eventlog\Application\
Tlntsvr
TypesSupported = "1f"
(Note: The default value data of the said registry entry is 1f.)
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{FE9E48A2-A014-11D1-855C-00A0C944138C}\InProcServer32
ThreadingModel = "Both"
(Note: The default value data of the said registry entry is Both.)
Elimina las siguientes claves de registro:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD897-BB45-11CF-9ABC-0080C7E7B78D}
Soluciones
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
Eliminar esta clave 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_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}
- Control
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
- {248DD890-BB45-11CF-9ABC-0080C7E7B78D}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0
- 0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
- {E7BC34A0-BA86-11CF-84B1-CBC2DA68BF6C}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{E7BC34A0-BA86-11CF-84B1-CBC2DA68BF6C}
- 1.0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{E7BC34A0-BA86-11CF-84B1-CBC2DA68BF6C}\1.0
- FLAGS
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{E7BC34A0-BA86-11CF-84B1-CBC2DA68BF6C}\1.0
- 0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{E7BC34A0-BA86-11CF-84B1-CBC2DA68BF6C}\1.0\0
- win32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{E7BC34A0-BA86-11CF-84B1-CBC2DA68BF6C}\1.0
- HELPDIR
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
- {E7BC34A1-BA86-11CF-84B1-CBC2DA68BF6C}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E7BC34A1-BA86-11CF-84B1-CBC2DA68BF6C}
- ProxyStubClsid
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E7BC34A1-BA86-11CF-84B1-CBC2DA68BF6C}
- ProxyStubClsid32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E7BC34A1-BA86-11CF-84B1-CBC2DA68BF6C}
- TypeLib
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
- {E7BC34A2-BA86-11CF-84B1-CBC2DA68BF6C}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E7BC34A2-BA86-11CF-84B1-CBC2DA68BF6C}
- ProxyStubClsid
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E7BC34A2-BA86-11CF-84B1-CBC2DA68BF6C}
- ProxyStubClsid32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E7BC34A2-BA86-11CF-84B1-CBC2DA68BF6C}
- TypeLib
- In HKEY_CLASSES_ROOT\CLSID
- {E7BC34A3-BA86-11CF-84B1-CBC2DA68BF6C}
- In HKEY_CLASSES_ROOT
- NTService.Control.1
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\Microsoft\DirectInput\MostRecentApplication
- Version = "{random values}"
- In HKEY_CURRENT_USER\Software\Microsoft\DirectInput\MostRecentApplication
- Name = "{malware file name}"
- In HKEY_CURRENT_USER\Software\Microsoft\DirectInput\MostRecentApplication
- Id = "{malware file name}4b55e48400055000"
- In HKEY_CURRENT_USER\Software\Microsoft\DirectInput\MostRecentApplication
- MostRecentStart = "{random values}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E7BC34A1-BA86-11CF-84B1-CBC2DA68BF6C}\TypeLib
- Version = "1.0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E7BC34A2-BA86-11CF-84B1-CBC2DA68BF6C}\TypeLib
- Version = "1.0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\NTService.Control.1
- CLSID = "{E7BC34A3-BA86-11CF-84B1-CBC2DA68BF6C}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{E7BC34A3-BA86-11CF-84B1-CBC2DA68BF6C}
- ProgID = "NTService.Control.1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{E7BC34A3-BA86-11CF-84B1-CBC2DA68BF6C}
- InprocServer32 = "%System%\ntsvc.ocx"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{E7BC34A3-BA86-11CF-84B1-CBC2DA68BF6C}
- ToolboxBitmap32 = "%System%\ntsvc.ocx, 1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{E7BC34A3-BA86-11CF-84B1-CBC2DA68BF6C}
- MiscStatus = "0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{E7BC34A3-BA86-11CF-84B1-CBC2DA68BF6C}
- MiscStatus\1 = "199824"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{E7BC34A3-BA86-11CF-84B1-CBC2DA68BF6C}
- TypeLib = "{E7BC34A0-BA86-11CF-84B1-CBC2DA68BF6C}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{E7BC34A3-BA86-11CF-84B1-CBC2DA68BF6C}
- Version = "1.0"
Step 4
Restaurar este valor del Registro modificado
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\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32
- From: ThreadingModel = "Apartment"
To: ThreadingModel = ""Apartment""
- From: ThreadingModel = "Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib
- From: Version = "1.0"
To: Version = ""1.0""
- From: Version = "1.0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib
- From: Version = "1.0"
To: Version = ""1.0""
- From: Version = "1.0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Eventlog\Application\Tlntsvr
- From: EventMessageFile = "%System%\tlntsvr.exe;%System%\xpsp1res.dll"
To: EventMessageFile = ""%Windows%\system32\tlntsvr.exe;%Windows%\system32\xpsp1res.dll""
- From: EventMessageFile = "%System%\tlntsvr.exe;%System%\xpsp1res.dll"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Eventlog\Application\Tlntsvr
- From: TypesSupported = "1f"
To: TypesSupported = ""1f""
- From: TypesSupported = "1f"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{FE9E48A2-A014-11D1-855C-00A0C944138C}\InProcServer32
- From: ThreadingModel = "Both"
To: ThreadingModel = ""Both""
- From: ThreadingModel = "Both"
Step 5
Explorar el equipo con su producto de Trend Micro para eliminar los archivos detectados como BKDR_VB.CF 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.
Rellene nuestra encuesta!