TROJ_TIMONIST.A
TrojanDropper:Win32/VB.FY (Microsoft); [0000f110.EXE\000513d8.EXE]:Generic BackDoor.b, [0000f110.EXE\00052fd8.EXE\00052fd8.EXE]:PWS-Gina.dl (McAfee); Trojan Horse (Symantec); Backdoor.Win32.VB.aol (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Trojan.Muldrop.1197.B (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\{43C3C9D7-856D-4FF8-97AD-4B38EB6175E0}
Otras modificaciones del sistema
Agrega las siguientes entradas de registro como parte de la rutina de instalación:
HKEY_CLASSES_ROOT\B3AEfile
HKEY_CLASSES_ROOT\.B3AE
HKEY_CLASSES_ROOT\B3AEfile\shell\
Open\command
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
Explorer\run
HKEY_CLASSES_ROOT\MfcTest.MfcTestObj.1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
MfcTest.MfcTestObj.1\CLSID
HKEY_CLASSES_ROOT\MfcTest.MfcTestObj
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
MfcTest.MfcTestObj\CLSID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
MfcTest.MfcTestObj\CurVer
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{43C3C9D7-856D-4FF8-97AD-4B38EB6175E0}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{43C3C9D7-856D-4FF8-97AD-4B38EB6175E0}\ProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{43C3C9D7-856D-4FF8-97AD-4B38EB6175E0}\VersionIndependentProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{43C3C9D7-856D-4FF8-97AD-4B38EB6175E0}\Programmable
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{43C3C9D7-856D-4FF8-97AD-4B38EB6175E0}\InprocServer32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{43C3C9D7-856D-4FF8-97AD-4B38EB6175E0}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{37068257-83A1-4CA8-B88A-D91CF1B7D51D}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{37068257-83A1-4CA8-B88A-D91CF1B7D51D}\1.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{37068257-83A1-4CA8-B88A-D91CF1B7D51D}\1.0\
FLAGS
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{37068257-83A1-4CA8-B88A-D91CF1B7D51D}\1.0\
0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{37068257-83A1-4CA8-B88A-D91CF1B7D51D}\1.0\
0\win32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{37068257-83A1-4CA8-B88A-D91CF1B7D51D}\1.0\
HELPDIR
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{5F0CB20A-E778-43E7-8ED5-F9021C170012}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{5F0CB20A-E778-43E7-8ED5-F9021C170012}\ProxyStubClsid
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{5F0CB20A-E778-43E7-8ED5-F9021C170012}\ProxyStubClsid32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{5F0CB20A-E778-43E7-8ED5-F9021C170012}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{9340A3FF-7922-4B4F-A789-59495B157A70}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{9340A3FF-7922-4B4F-A789-59495B157A70}\1.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{9340A3FF-7922-4B4F-A789-59495B157A70}\1.0\
FLAGS
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{9340A3FF-7922-4B4F-A789-59495B157A70}\1.0\
0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{9340A3FF-7922-4B4F-A789-59495B157A70}\1.0\
0\win32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{9340A3FF-7922-4B4F-A789-59495B157A70}\1.0\
HELPDIR
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{41AD429E-FAF9-4D45-BDBD-AE08BCCF1B22}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{41AD429E-FAF9-4D45-BDBD-AE08BCCF1B22}\ProxyStubClsid
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{41AD429E-FAF9-4D45-BDBD-AE08BCCF1B22}\ProxyStubClsid32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{41AD429E-FAF9-4D45-BDBD-AE08BCCF1B22}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{BC2BF882-E694-4787-9897-7511EF59614F}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{BC2BF882-E694-4787-9897-7511EF59614F}\ProxyStubClsid
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{BC2BF882-E694-4787-9897-7511EF59614F}\ProxyStubClsid32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{BC2BF882-E694-4787-9897-7511EF59614F}\TypeLib
HKEY_CLASSES_ROOT\CLSID\{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}\InprocServer32
HKEY_CLASSES_ROOT\Thead.Expcom
Agrega las siguientes entradas de registro:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
Explorer\run
R050B-DC97-43F0-8E08-F418B9 = "R050B-DC97-43F0-8E08-F418B9.B3AE"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{43C3C9D7-856D-4FF8-97AD-4B38EB6175E0}\InprocServer32
ThreadingModel = "Apartment"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{5F0CB20A-E778-43E7-8ED5-F9021C170012}\TypeLib
Version = "1.0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{41AD429E-FAF9-4D45-BDBD-AE08BCCF1B22}\TypeLib
Version = "1.0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{BC2BF882-E694-4787-9897-7511EF59614F}\TypeLib
Version = "1.0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}
ProgID = "Thead.Expcom"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}\InprocServer32
ThreadingModel = "Apartment"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}
ToolboxBitmap32 = "%System%\USERSENV.DLL, 30000"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}
MiscStatus = "0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}
MiscStatus\1 = "131473"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}
TypeLib = "{9340A3FF-7922-4B4F-A789-59495B157A70}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}
VERSION = "1.0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Thead.Expcom
Clsid = "{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{41AD429E-FAF9-4D45-BDBD-AE08BCCF1B22}
ProxyStubClsid = "{00020424-0000-0000-C000-000000000046}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{41AD429E-FAF9-4D45-BDBD-AE08BCCF1B22}
ProxyStubClsid32 = "{00020424-0000-0000-C000-000000000046}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{BC2BF882-E694-4787-9897-7511EF59614F}
ProxyStubClsid = "{00020420-0000-0000-C000-000000000046}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{BC2BF882-E694-4787-9897-7511EF59614F}
ProxyStubClsid32 = "{00020420-0000-0000-C000-000000000046}"
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_CLASSES_ROOT
- B3AEfile
- In HKEY_CLASSES_ROOT
- .B3AE
- In HKEY_CLASSES_ROOT\B3AEfile\shell\Open
- command
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer
- run
- In HKEY_CLASSES_ROOT
- MfcTest.MfcTestObj.1
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MfcTest.MfcTestObj.1
- CLSID
- In HKEY_CLASSES_ROOT
- MfcTest.MfcTestObj
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MfcTest.MfcTestObj
- CLSID
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MfcTest.MfcTestObj
- CurVer
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {43C3C9D7-856D-4FF8-97AD-4B38EB6175E0}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{43C3C9D7-856D-4FF8-97AD-4B38EB6175E0}
- ProgID
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{43C3C9D7-856D-4FF8-97AD-4B38EB6175E0}
- VersionIndependentProgID
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{43C3C9D7-856D-4FF8-97AD-4B38EB6175E0}
- Programmable
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{43C3C9D7-856D-4FF8-97AD-4B38EB6175E0}
- InprocServer32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{43C3C9D7-856D-4FF8-97AD-4B38EB6175E0}
- TypeLib
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer
- Browser Helper Objects
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
- {37068257-83A1-4CA8-B88A-D91CF1B7D51D}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{37068257-83A1-4CA8-B88A-D91CF1B7D51D}
- 1.0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{37068257-83A1-4CA8-B88A-D91CF1B7D51D}\1.0
- FLAGS
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{37068257-83A1-4CA8-B88A-D91CF1B7D51D}\1.0
- 0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{37068257-83A1-4CA8-B88A-D91CF1B7D51D}\1.0\0
- win32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{37068257-83A1-4CA8-B88A-D91CF1B7D51D}\1.0
- HELPDIR
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
- {5F0CB20A-E778-43E7-8ED5-F9021C170012}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{5F0CB20A-E778-43E7-8ED5-F9021C170012}
- ProxyStubClsid
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{5F0CB20A-E778-43E7-8ED5-F9021C170012}
- ProxyStubClsid32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{5F0CB20A-E778-43E7-8ED5-F9021C170012}
- TypeLib
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
- {9340A3FF-7922-4B4F-A789-59495B157A70}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{9340A3FF-7922-4B4F-A789-59495B157A70}
- 1.0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{9340A3FF-7922-4B4F-A789-59495B157A70}\1.0
- FLAGS
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{9340A3FF-7922-4B4F-A789-59495B157A70}\1.0
- 0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{9340A3FF-7922-4B4F-A789-59495B157A70}\1.0\0
- win32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{9340A3FF-7922-4B4F-A789-59495B157A70}\1.0
- HELPDIR
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
- {41AD429E-FAF9-4D45-BDBD-AE08BCCF1B22}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{41AD429E-FAF9-4D45-BDBD-AE08BCCF1B22}
- ProxyStubClsid
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{41AD429E-FAF9-4D45-BDBD-AE08BCCF1B22}
- ProxyStubClsid32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{41AD429E-FAF9-4D45-BDBD-AE08BCCF1B22}
- TypeLib
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
- {BC2BF882-E694-4787-9897-7511EF59614F}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{BC2BF882-E694-4787-9897-7511EF59614F}
- ProxyStubClsid
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{BC2BF882-E694-4787-9897-7511EF59614F}
- ProxyStubClsid32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{BC2BF882-E694-4787-9897-7511EF59614F}
- TypeLib
- In HKEY_CLASSES_ROOT\CLSID
- {ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}
- InprocServer32
- In HKEY_CLASSES_ROOT
- Thead.Expcom
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\Microsoft\Windows\CurrentVersion\policies\Explorer\run
- R050B-DC97-43F0-8E08-F418B9 = "R050B-DC97-43F0-8E08-F418B9.B3AE"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{43C3C9D7-856D-4FF8-97AD-4B38EB6175E0}\InprocServer32
- ThreadingModel = "Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{5F0CB20A-E778-43E7-8ED5-F9021C170012}\TypeLib
- Version = "1.0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{41AD429E-FAF9-4D45-BDBD-AE08BCCF1B22}\TypeLib
- Version = "1.0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{BC2BF882-E694-4787-9897-7511EF59614F}\TypeLib
- Version = "1.0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}
- ProgID = "Thead.Expcom"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}\InprocServer32
- ThreadingModel = "Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}
- ToolboxBitmap32 = "%System%\USERSENV.DLL, 30000"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}
- MiscStatus = "0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}
- MiscStatus\1 = "131473"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}
- TypeLib = "{9340A3FF-7922-4B4F-A789-59495B157A70}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}
- VERSION = "1.0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Thead.Expcom
- Clsid = "{ED54AAAA-2C30-4CE9-9FCF-17028AF006FD}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{41AD429E-FAF9-4D45-BDBD-AE08BCCF1B22}
- ProxyStubClsid = "{00020424-0000-0000-C000-000000000046}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{41AD429E-FAF9-4D45-BDBD-AE08BCCF1B22}
- ProxyStubClsid32 = "{00020424-0000-0000-C000-000000000046}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{BC2BF882-E694-4787-9897-7511EF59614F}
- ProxyStubClsid = "{00020420-0000-0000-C000-000000000046}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{BC2BF882-E694-4787-9897-7511EF59614F}
- ProxyStubClsid32 = "{00020420-0000-0000-C000-000000000046}"
Step 5
Explorar el equipo con su producto de Trend Micro para eliminar los archivos detectados como TROJ_TIMONIST.A 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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