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)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVER ALL RISK RATING:
 DAMAGE POTENTIAL::
 DISTRIBUTION POTENTIAL::
 REPORTED INFECTION:
Low
Medium
High
Critical

  • Threat Type:
    Trojan

  • Destructiveness:
    No

  • Encrypted:
     

  • In the wild::
    Yes

  OVERVIEW


  TECHNICAL DETAILS

File size: 497,424 bytes
File type: EXE
Memory resident: No
INITIAL SAMPLES RECEIVED DATE: 25 kwietnia 2012

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

Minimum scan engine: 9.200

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

[ learnMore ]

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

[ learnMore ]

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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