TROJ_VB.BAN
TrojanDownloader:Win32/Banload.AMA (Microsoft); PWS-Banker!hd3 (McAfee); Trojan Horse (Symantec); Trojan.Win32.VB.bwyj (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Gen:Heur.Conjar.1 (FSecure)
Windows 2000, Windows XP, Windows Server 2003
Threat Type:
Trojan
Destructiveness:
No
Encrypted:
In the wild::
Yes
OVERVIEW
TECHNICAL DETAILS
Técnica de inicio automático
Se registra como BHO para garantizar su ejecución automática cada vez que se utilice Internet Explorer mediante la introducción de las siguientes claves de registro:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{946405B5-04A9-4B40-AC64-D466FCD779A5}
Otras modificaciones del sistema
Agrega las siguientes entradas de registro como parte de la rutina de instalación:
HKEY_LOCAL_MACHINE\Software\Description\
Microsoft\Rpc\UuidTemporaryData
HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
Ext\CLSID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{827AF941-5608-47FB-BA83-F168FEB3A679}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{827AF941-5608-47FB-BA83-F168FEB3A679}\1.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{827AF941-5608-47FB-BA83-F168FEB3A679}\1.0\
FLAGS
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{827AF941-5608-47FB-BA83-F168FEB3A679}\1.0\
0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{827AF941-5608-47FB-BA83-F168FEB3A679}\1.0\
0\win32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{827AF941-5608-47FB-BA83-F168FEB3A679}\1.0\
HELPDIR
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{90320561-B8A0-44C7-9E0F-624615F15B79}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{90320561-B8A0-44C7-9E0F-624615F15B79}\ProxyStubClsid
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{90320561-B8A0-44C7-9E0F-624615F15B79}\ProxyStubClsid32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{90320561-B8A0-44C7-9E0F-624615F15B79}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{198CC53D-64E6-4849-B905-A43EC230B5D4}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{198CC53D-64E6-4849-B905-A43EC230B5D4}\ProxyStubClsid
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{198CC53D-64E6-4849-B905-A43EC230B5D4}\ProxyStubClsid32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{198CC53D-64E6-4849-B905-A43EC230B5D4}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{79C6133E-A46A-4164-941F-96D118401B64}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{79C6133E-A46A-4164-941F-96D118401B64}\ProxyStubClsid
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{79C6133E-A46A-4164-941F-96D118401B64}\ProxyStubClsid32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{79C6133E-A46A-4164-941F-96D118401B64}\TypeLib
HKEY_CLASSES_ROOT\CLSID\{7D8E8C90-3F1D-4EB3-9A07-12229CBD6C5E}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7D8E8C90-3F1D-4EB3-9A07-12229CBD6C5E}\InprocServer32
HKEY_CLASSES_ROOT\Diagnose.cJpeg
HKEY_CLASSES_ROOT\CLSID\{88DD41B5-4617-45BC-9E89-BDB028E17062}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{88DD41B5-4617-45BC-9E89-BDB028E17062}\InprocServer32
HKEY_CLASSES_ROOT\Diagnose.cImage
HKEY_CLASSES_ROOT\CLSID\{946405B5-04A9-4B40-AC64-D466FCD779A5}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{946405B5-04A9-4B40-AC64-D466FCD779A5}\InprocServer32
HKEY_CLASSES_ROOT\Diagnose.Class
Agrega las siguientes entradas de registro:
HKEY_LOCAL_MACHINE\SOFTWARE\Description\
Microsoft\Rpc\UuidTemporaryData
NetworkAddress = "{random values}"
HKEY_LOCAL_MACHINE\SOFTWARE\Description\
Microsoft\Rpc\UuidTemporaryData
NetworkAddressLocal = "0"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
system
EnableLUA = "0"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{946405B5-04A9-4B40-AC64-D466FCD779A5}
NoExplorer = "1"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Ext\CLSID
{946405B5-04A9-4B40-AC64-D466FCD779A5} = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{90320561-B8A0-44C7-9E0F-624615F15B79}\TypeLib
Version = "1.0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{198CC53D-64E6-4849-B905-A43EC230B5D4}\TypeLib
Version = "1.0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{79C6133E-A46A-4164-941F-96D118401B64}\TypeLib
Version = "1.0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7D8E8C90-3F1D-4EB3-9A07-12229CBD6C5E}
ProgID = "Diagnose.cJpeg"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7D8E8C90-3F1D-4EB3-9A07-12229CBD6C5E}\InprocServer32
ThreadingModel = "Apartment"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7D8E8C90-3F1D-4EB3-9A07-12229CBD6C5E}
TypeLib = "{827AF941-5608-47FB-BA83-F168FEB3A679}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{7D8E8C90-3F1D-4EB3-9A07-12229CBD6C5E}
VERSION = "1.0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Diagnose.cJpeg
Clsid = "{7D8E8C90-3F1D-4EB3-9A07-12229CBD6C5E}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{198CC53D-64E6-4849-B905-A43EC230B5D4}
ProxyStubClsid = "{00020424-0000-0000-C000-000000000046}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{198CC53D-64E6-4849-B905-A43EC230B5D4}
ProxyStubClsid32 = "{00020424-0000-0000-C000-000000000046}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{88DD41B5-4617-45BC-9E89-BDB028E17062}
ProgID = "Diagnose.cImage"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{88DD41B5-4617-45BC-9E89-BDB028E17062}\InprocServer32
ThreadingModel = "Apartment"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{88DD41B5-4617-45BC-9E89-BDB028E17062}
TypeLib = "{827AF941-5608-47FB-BA83-F168FEB3A679}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{88DD41B5-4617-45BC-9E89-BDB028E17062}
VERSION = "1.0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Diagnose.cImage
Clsid = "{88DD41B5-4617-45BC-9E89-BDB028E17062}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{79C6133E-A46A-4164-941F-96D118401B64}
ProxyStubClsid = "{00020424-0000-0000-C000-000000000046}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{79C6133E-A46A-4164-941F-96D118401B64}
ProxyStubClsid32 = "{00020424-0000-0000-C000-000000000046}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{946405B5-04A9-4B40-AC64-D466FCD779A5}
ProgID = "Diagnose.Class"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{946405B5-04A9-4B40-AC64-D466FCD779A5}\InprocServer32
ThreadingModel = "Apartment"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{946405B5-04A9-4B40-AC64-D466FCD779A5}
TypeLib = "{827AF941-5608-47FB-BA83-F168FEB3A679}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{946405B5-04A9-4B40-AC64-D466FCD779A5}
VERSION = "1.0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Diagnose.Class
Clsid = "{946405B5-04A9-4B40-AC64-D466FCD779A5}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{90320561-B8A0-44C7-9E0F-624615F15B79}
ProxyStubClsid = "{00020424-0000-0000-C000-000000000046}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{90320561-B8A0-44C7-9E0F-624615F15B79}
ProxyStubClsid32 = "{00020424-0000-0000-C000-000000000046}"
Rutina de infiltración
Infiltra los archivos siguientes:
- %System%\dcon_class.dll
- %User Temp%\ID4S6ERlwfDtZyW
(Nota: %System% es la carpeta del sistema de Windows, que en el caso de Windows 98 y ME suele estar en C:\Windows\System, en el caso de Windows NT y 2000 en C:\WINNT\System32 y en el caso de Windows XP y Server 2003 en C:\Windows\System32).
. %User Temp% es la carpeta Temp del usuario activo, que en el caso de Windows 2000, XP y Server 2003 suele estar en C:\Documents and Settings\{nombre de usuario}\Local Settings\Temp).)
SOLUTION
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
Cierre todas las ventanas abiertas del explorador.
Step 3
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\Description\Microsoft\Rpc
- UuidTemporaryData
- In HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Ext
- CLSID
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
- {827AF941-5608-47FB-BA83-F168FEB3A679}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{827AF941-5608-47FB-BA83-F168FEB3A679}
- 1.0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{827AF941-5608-47FB-BA83-F168FEB3A679}\1.0
- FLAGS
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{827AF941-5608-47FB-BA83-F168FEB3A679}\1.0
- 0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{827AF941-5608-47FB-BA83-F168FEB3A679}\1.0\0
- win32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{827AF941-5608-47FB-BA83-F168FEB3A679}\1.0
- HELPDIR
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
- {90320561-B8A0-44C7-9E0F-624615F15B79}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{90320561-B8A0-44C7-9E0F-624615F15B79}
- ProxyStubClsid
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{90320561-B8A0-44C7-9E0F-624615F15B79}
- ProxyStubClsid32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{90320561-B8A0-44C7-9E0F-624615F15B79}
- TypeLib
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
- {198CC53D-64E6-4849-B905-A43EC230B5D4}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{198CC53D-64E6-4849-B905-A43EC230B5D4}
- ProxyStubClsid
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{198CC53D-64E6-4849-B905-A43EC230B5D4}
- ProxyStubClsid32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{198CC53D-64E6-4849-B905-A43EC230B5D4}
- TypeLib
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
- {79C6133E-A46A-4164-941F-96D118401B64}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{79C6133E-A46A-4164-941F-96D118401B64}
- ProxyStubClsid
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{79C6133E-A46A-4164-941F-96D118401B64}
- ProxyStubClsid32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{79C6133E-A46A-4164-941F-96D118401B64}
- TypeLib
- In HKEY_CLASSES_ROOT\CLSID
- {7D8E8C90-3F1D-4EB3-9A07-12229CBD6C5E}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7D8E8C90-3F1D-4EB3-9A07-12229CBD6C5E}
- InprocServer32
- In HKEY_CLASSES_ROOT
- Diagnose.cJpeg
- In HKEY_CLASSES_ROOT\CLSID
- {88DD41B5-4617-45BC-9E89-BDB028E17062}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{88DD41B5-4617-45BC-9E89-BDB028E17062}
- InprocServer32
- In HKEY_CLASSES_ROOT
- Diagnose.cImage
- In HKEY_CLASSES_ROOT\CLSID
- {946405B5-04A9-4B40-AC64-D466FCD779A5}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{946405B5-04A9-4B40-AC64-D466FCD779A5}
- InprocServer32
- In HKEY_CLASSES_ROOT
- Diagnose.Class
Step 4
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_LOCAL_MACHINE\SOFTWARE\Description\Microsoft\Rpc\UuidTemporaryData
- NetworkAddress = "{random values}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Description\Microsoft\Rpc\UuidTemporaryData
- NetworkAddressLocal = "0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system
- EnableLUA = "0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{946405B5-04A9-4B40-AC64-D466FCD779A5}
- NoExplorer = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Ext\CLSID
- {946405B5-04A9-4B40-AC64-D466FCD779A5} = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{90320561-B8A0-44C7-9E0F-624615F15B79}\TypeLib
- Version = "1.0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{198CC53D-64E6-4849-B905-A43EC230B5D4}\TypeLib
- Version = "1.0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{79C6133E-A46A-4164-941F-96D118401B64}\TypeLib
- Version = "1.0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7D8E8C90-3F1D-4EB3-9A07-12229CBD6C5E}
- ProgID = "Diagnose.cJpeg"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7D8E8C90-3F1D-4EB3-9A07-12229CBD6C5E}\InprocServer32
- ThreadingModel = "Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7D8E8C90-3F1D-4EB3-9A07-12229CBD6C5E}
- TypeLib = "{827AF941-5608-47FB-BA83-F168FEB3A679}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{7D8E8C90-3F1D-4EB3-9A07-12229CBD6C5E}
- VERSION = "1.0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Diagnose.cJpeg
- Clsid = "{7D8E8C90-3F1D-4EB3-9A07-12229CBD6C5E}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{198CC53D-64E6-4849-B905-A43EC230B5D4}
- ProxyStubClsid = "{00020424-0000-0000-C000-000000000046}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{198CC53D-64E6-4849-B905-A43EC230B5D4}
- ProxyStubClsid32 = "{00020424-0000-0000-C000-000000000046}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{88DD41B5-4617-45BC-9E89-BDB028E17062}
- ProgID = "Diagnose.cImage"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{88DD41B5-4617-45BC-9E89-BDB028E17062}\InprocServer32
- ThreadingModel = "Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{88DD41B5-4617-45BC-9E89-BDB028E17062}
- TypeLib = "{827AF941-5608-47FB-BA83-F168FEB3A679}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{88DD41B5-4617-45BC-9E89-BDB028E17062}
- VERSION = "1.0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Diagnose.cImage
- Clsid = "{88DD41B5-4617-45BC-9E89-BDB028E17062}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{79C6133E-A46A-4164-941F-96D118401B64}
- ProxyStubClsid = "{00020424-0000-0000-C000-000000000046}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{79C6133E-A46A-4164-941F-96D118401B64}
- ProxyStubClsid32 = "{00020424-0000-0000-C000-000000000046}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{946405B5-04A9-4B40-AC64-D466FCD779A5}
- ProgID = "Diagnose.Class"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{946405B5-04A9-4B40-AC64-D466FCD779A5}\InprocServer32
- ThreadingModel = "Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{946405B5-04A9-4B40-AC64-D466FCD779A5}
- TypeLib = "{827AF941-5608-47FB-BA83-F168FEB3A679}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{946405B5-04A9-4B40-AC64-D466FCD779A5}
- VERSION = "1.0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Diagnose.Class
- Clsid = "{946405B5-04A9-4B40-AC64-D466FCD779A5}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{90320561-B8A0-44C7-9E0F-624615F15B79}
- ProxyStubClsid = "{00020424-0000-0000-C000-000000000046}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{90320561-B8A0-44C7-9E0F-624615F15B79}
- ProxyStubClsid32 = "{00020424-0000-0000-C000-000000000046}"
Step 5
Buscar y eliminar estos archivos
- %System%\dcon_class.dll
- %User Temp%\ID4S6ERlwfDtZyW
Step 6
Explorar el equipo con su producto de Trend Micro para eliminar los archivos detectados como TROJ_VB.BAN 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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