Ransom:Win32/Crowti (Microsoft); RDN/Suspicious.bfr!bg (McAfee); Trojan.Cryptodefense (Symantec); Trojan-Ransom.Win32.Cryptodef.yf (Kaspersky); Troj/DwnLdr-LSQ (Sophos); Win32.Malware!Drop (Sunbelt); Trojan horse FileCryptor.FT (AVG)

 Piattaforma:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

 Valutazione del rischio complessivo:
 Potenziale dannoso: :
 Potenziale di distribuzione: :
 Reported Infection:
Basso
Medio
Alto
Critico

  • Tipo di minaccia informatica:
    Trojan

  • Distruttivo?:
    No

  • Crittografato?:
     

  • In the wild::
    Sì

  Panoramica e descrizione

Elimina archivos para impedir la ejecución correcta de programas y aplicaciones.

Este malware se elimina tras la ejecución.

  Dettagli tecnici

Dimensione file: 196,608 bytes
Tipo di file: EXE
Residente in memoria: Sì
Data di ricezione campioni iniziali: 18 agosto 2014

Técnica de inicio automático

Agrega las siguientes entradas de registro para permitir su ejecución automática cada vez que se inicia el sistema:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
dfadcd = "%System Root%\dfadcd2\dfadcd2.exe"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
dfadcd2 = "%User Profile%\Application Data\dfadcd2.exe"

Otras modificaciones del sistema

Modifica los archivos siguientes:

  • %Application Data%\Microsoft\Windows Media\9.0\WMSDKNS.DTD
  • %User Profile%\Templates\excel.xls
  • %User Profile%\Templates\excel4.xls
  • %User Profile%\Templates\powerpnt.ppt
  • %User Profile%\Templates\quattro.wb2
  • %User Profile%\Templates\sndrec.wav
  • %User Profile%\Templates\winword.doc
  • %User Profile%\Templates\winword2.doc
  • %User Profile%\Templates\wordpfct.wpd

(Nota: %Application Data% es la carpeta Application Data del usuario activo, que en el caso de Windows 98 y ME suele estar ubicada en C:\Windows\Profiles\{nombre de usuario}\Application Data, en el caso de Windows NT en C:\WINNT\Profiles\{nombre de usuario}\Application Data y en el caso de Windows 2000, XP y Server 2003 en C:\Documents and Settings\{nombre de usuario}\Local Settings\Application Data).

. %User Profile% es la carpeta de perfil del usuario activo, que en el caso de Windows 98 y ME suele estar en C:\Windows\Profiles\{nombre de usuario}, en el caso de Windows NT en C:\WINNT\Profiles\{nombre de usuario} y en el caso de Windows 2000, XP y Server 2003 en C:\Documents and Settings\{nombre de usuario}).

)

Elimina los archivos siguientes:

  • %System Root%\dfadcd2

(Nota: %System Root% es la carpeta raíz, normalmente C:\. También es la ubicación del sistema operativo).

)

Agrega las siguientes entradas de registro como parte de la rutina de instalación:

HKEY_CURRENT_USER\software\DFADCD2311EB6DC63CF304D1270AA10C

HKEY_CURRENT_USER\software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF

Agrega las siguientes entradas de registro:

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C
fa = "{random values}"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C
ab = "{random characters}"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C
dc = "{random characters}"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C
cd = "{random characters}"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Internet Explorer\brndlog.bak = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Internet Explorer\brndlog.txt = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%Application Data%\Microsoft\Windows Media\9.0\WMSDKNS.DTD = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Templates\excel.xls = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Templates\excel4.xls = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Templates\powerpnt.ppt = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Templates\quattro.wb2 = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Templates\sndrec.wav = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Templates\winword.doc = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Templates\winword2.doc = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Templates\wordpfct.wpd = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Cookies\wilbert@atdmt[2].txt = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Cookies\wilbert@bing[2].txt = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Cookies\wilbert@c.atdmt[2].txt = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Cookies\wilbert@c.msn[2].txt = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Cookies\wilbert@doubleclick[1].txt = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Cookies\wilbert@microsoft[1].txt = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Cookies\wilbert@msnportal.112.2o7[1].txt = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Cookies\wilbert@msn[2].txt = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Cookies\wilbert@scorecardresearch[2].txt = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Cookies\wilbert@www.bing[2].txt = "68adfd"

HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\
0001123347AACCDF
%User Profile%\Cookies\wilbert@www.msn[1].txt = "68adfd"

Modifica las siguientes entradas de registro:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\SystemRestore
DisableSR = "1"

Rutina de infiltración

Infiltra los archivos siguientes:

  • %System Root%\dfadcd2\dfadcd2.exe
  • %User Profile%\Application Data\dfadcd2.exe
  • %User Startup%\dfadcd2.exe
  • A:\DECRYPT_INSTRUCTION.TXT
  • A:\DECRYPT_INSTRUCTION.HTML
  • A:\DECRYPT_INSTRUCTION.URL
  • %User Profile%\Internet Explorer\brndlog.bak.mx3
  • %User Profile%\Internet Explorer\brndlog.bak
  • %User Profile%\Internet Explorer\brndlog.txt.d18
  • %User Profile%\Internet Explorer\brndlog.txt
  • %User Profile%\Internet Explorer\DECRYPT_INSTRUCTION.TXT
  • %User Profile%\Internet Explorer\DECRYPT_INSTRUCTION.HTML
  • %User Profile%\Internet Explorer\DECRYPT_INSTRUCTION.URL
  • %User Profile%\Microsoft\DECRYPT_INSTRUCTION.TXT
  • %User Profile%\Microsoft\DECRYPT_INSTRUCTION.HTML
  • %User Profile%\Microsoft\DECRYPT_INSTRUCTION.URL
  • %User Profile%\Application Data\DECRYPT_INSTRUCTION.TXT
  • %User Profile%\Application Data\DECRYPT_INSTRUCTION.HTML
  • %User Profile%\Application Data\DECRYPT_INSTRUCTION.URL
  • %Application Data%\Microsoft\Windows Media\9.0\WMSDKNS.DTD.hh8
  • %Application Data%\Microsoft\Windows Media\9.0\DECRYPT_INSTRUCTION.TXT
  • %Application Data%\Microsoft\Windows Media\9.0\DECRYPT_INSTRUCTION.HTML
  • %Application Data%\Microsoft\Windows Media\9.0\DECRYPT_INSTRUCTION.URL
  • %Application Data%\Microsoft\Windows Media\DECRYPT_INSTRUCTION.TXT
  • %Application Data%\Microsoft\Windows Media\DECRYPT_INSTRUCTION.HTML
  • %Application Data%\Microsoft\Windows Media\DECRYPT_INSTRUCTION.URL
  • %Application Data%\Microsoft\DECRYPT_INSTRUCTION.TXT
  • %Application Data%\Microsoft\DECRYPT_INSTRUCTION.HTML
  • %Application Data%\Microsoft\DECRYPT_INSTRUCTION.URL
  • %Application Data%\DECRYPT_INSTRUCTION.TXT
  • %Application Data%\DECRYPT_INSTRUCTION.HTML
  • %Application Data%\DECRYPT_INSTRUCTION.URL
  • %User Profile%\Local Settings\DECRYPT_INSTRUCTION.TXT
  • %User Profile%\Local Settings\DECRYPT_INSTRUCTION.HTML
  • %User Profile%\Local Settings\DECRYPT_INSTRUCTION.URL
  • %User Profile%\Templates\excel.xls.z0e
  • %User Profile%\Templates\excel4.xls.50t
  • %User Profile%\Templates\powerpnt.ppt.g29
  • %User Profile%\Templates\quattro.wb2.2nz
  • %User Profile%\Templates\sndrec.wav.3zu
  • %User Profile%\Templates\winword.doc.k9o
  • %User Profile%\Templates\winword2.doc.347
  • %User Profile%\Templates\wordpfct.wpd.np7
  • %User Profile%\Templates\DECRYPT_INSTRUCTION.TXT
  • %User Profile%\Templates\DECRYPT_INSTRUCTION.HTML
  • %User Profile%\Templates\DECRYPT_INSTRUCTION.URL
  • %User Profile%\DECRYPT_INSTRUCTION.TXT
  • %User Profile%\DECRYPT_INSTRUCTION.HTML
  • %User Profile%\DECRYPT_INSTRUCTION.URL
  • %User Profile%\Internet Explorer\brndlog.bak.952
  • %User Profile%\Internet Explorer\brndlog.txt.j95
  • %User Profile%\Cookies\wilbert@atdmt[2].txt.9fu
  • %User Profile%\Cookies\wilbert@atdmt[2].txt
  • %User Profile%\Cookies\wilbert@bing[2].txt.971
  • %User Profile%\Cookies\wilbert@bing[2].txt
  • %User Profile%\Cookies\wilbert@c.atdmt[2].txt.a7n
  • %User Profile%\Cookies\wilbert@c.atdmt[2].txt
  • %User Profile%\Cookies\wilbert@c.msn[2].txt.19l
  • %User Profile%\Cookies\wilbert@c.msn[2].txt
  • %User Profile%\Cookies\wilbert@doubleclick[1].txt.7t7
  • %User Profile%\Cookies\wilbert@doubleclick[1].txt
  • %User Profile%\Cookies\wilbert@microsoft[1].txt.d0a
  • %User Profile%\Cookies\wilbert@microsoft[1].txt
  • %User Profile%\Cookies\wilbert@msnportal.112.2o7[1].txt.3xw
  • %User Profile%\Cookies\wilbert@msnportal.112.2o7[1].txt
  • %User Profile%\Cookies\wilbert@msn[2].txt.c8v
  • %User Profile%\Cookies\wilbert@msn[2].txt
  • %User Profile%\Cookies\wilbert@scorecardresearch[2].txt.6z3
  • %User Profile%\Cookies\wilbert@scorecardresearch[2].txt
  • %User Profile%\Cookies\wilbert@www.bing[2].txt.2m0
  • %User Profile%\Cookies\wilbert@www.bing[2].txt
  • %User Profile%\Cookies\wilbert@www.msn[1].txt.j6f
  • %User Profile%\Cookies\wilbert@www.msn[1].txt
  • %User Profile%\Cookies\DECRYPT_INSTRUCTION.TXT
  • %User Profile%\Cookies\DECRYPT_INSTRUCTION.HTML
  • %User Profile%\Cookies\DECRYPT_INSTRUCTION.URL
  • %Application Data%\Microsoft\Windows Media\9.0\WMSDKNS.DTD.6vj
  • %User Profile%\Templates\excel.xls.8eu
  • %User Profile%\Templates\excel4.xls.7ut
  • %User Profile%\Templates\powerpnt.ppt.1wk
  • %User Profile%\Templates\quattro.wb2.cp0
  • %User Profile%\Templates\sndrec.wav.k4m
  • %User Profile%\Templates\winword.doc.5uf
  • %User Profile%\Templates\winword2.doc.9y5
  • %User Profile%\Templates\wordpfct.wpd.ky5
  • %System Root%\Documents and Settings\DECRYPT_INSTRUCTION.TXT
  • %System Root%\Documents and Settings\DECRYPT_INSTRUCTION.HTML
  • %System Root%\Documents and Settings\DECRYPT_INSTRUCTION.URL
  • %System Root%\DECRYPT_INSTRUCTION.TXT
  • %System Root%\DECRYPT_INSTRUCTION.HTML
  • %System Root%\DECRYPT_INSTRUCTION.URL
  • %Desktop%\DECRYPT_INSTRUCTION.TXT
  • %Desktop%\DECRYPT_INSTRUCTION.HTML
  • %Desktop%\DECRYPT_INSTRUCTION.URL
  • %User Startup%\DECRYPT_INSTRUCTION.TXT
  • %User Startup%\DECRYPT_INSTRUCTION.HTML
  • %User Startup%\DECRYPT_INSTRUCTION.URL

Otros detalles

Este malware se elimina tras la ejecución.

  Soluzioni

Motore di scansione minimo: 9.700

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

Reiniciar en modo seguro

[ learnMore ]

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_CURRENT_USER\software
    • DFADCD2311EB6DC63CF304D1270AA10C
  • In HKEY_CURRENT_USER\software\DFADCD2311EB6DC63CF304D1270AA10C
    • 0001123347AACCDF

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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • dfadcd = "%System Root%\dfadcd2\dfadcd2.exe"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • dfadcd2 = "%User Profile%\Application Data\dfadcd2.exe"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C
    • fa = "{random values}"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C
    • ab = "{random characters}"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C
    • dc = "{random characters}"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C
    • cd = "{random characters}"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Internet Explorer\brndlog.bak = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Internet Explorer\brndlog.txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %Application Data%\Microsoft\Windows Media\9.0\WMSDKNS.DTD = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Templates\excel.xls = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Templates\excel4.xls = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Templates\powerpnt.ppt = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Templates\quattro.wb2 = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Templates\sndrec.wav = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Templates\winword.doc = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Templates\winword2.doc = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Templates\wordpfct.wpd = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Cookies\wilbert@atdmt[2].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Cookies\wilbert@bing[2].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Cookies\wilbert@c.atdmt[2].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Cookies\wilbert@c.msn[2].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Cookies\wilbert@doubleclick[1].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Cookies\wilbert@microsoft[1].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Cookies\wilbert@msnportal.112.2o7[1].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Cookies\wilbert@msn[2].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Cookies\wilbert@scorecardresearch[2].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Cookies\wilbert@www.bing[2].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\DFADCD2311EB6DC63CF304D1270AA10C\0001123347AACCDF
    • %User Profile%\Cookies\wilbert@www.msn[1].txt = "68adfd"

Step 5

Restaurar este valor del Registro modificado

[ 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 NT\CurrentVersion\SystemRestore
    • DisableSR = "1"

Step 6

Buscar y eliminar estos archivos

[ learnMore ]
Puede que algunos de los archivos del componente estén ocultos. Asegúrese de que tiene activada la casilla Buscar archivos y carpetas ocultos en la opción "Más opciones avanzadas" para que el resultado de la búsqueda incluya todos los archivos y carpetas ocultos.
  • %System Root%\dfadcd2\dfadcd2.exe
  • %User Profile%\Application Data\dfadcd2.exe
  • %User Startup%\dfadcd2.exe
  • A:\DECRYPT_INSTRUCTION.TXT
  • A:\DECRYPT_INSTRUCTION.HTML
  • A:\DECRYPT_INSTRUCTION.URL
  • %User Profile%\Internet Explorer\brndlog.bak.mx3
  • %User Profile%\Internet Explorer\brndlog.bak
  • %User Profile%\Internet Explorer\brndlog.txt.d18
  • %User Profile%\Internet Explorer\brndlog.txt
  • %User Profile%\Internet Explorer\DECRYPT_INSTRUCTION.TXT
  • %User Profile%\Internet Explorer\DECRYPT_INSTRUCTION.HTML
  • %User Profile%\Internet Explorer\DECRYPT_INSTRUCTION.URL
  • %User Profile%\Microsoft\DECRYPT_INSTRUCTION.TXT
  • %User Profile%\Microsoft\DECRYPT_INSTRUCTION.HTML
  • %User Profile%\Microsoft\DECRYPT_INSTRUCTION.URL
  • %User Profile%\Application Data\DECRYPT_INSTRUCTION.TXT
  • %User Profile%\Application Data\DECRYPT_INSTRUCTION.HTML
  • %User Profile%\Application Data\DECRYPT_INSTRUCTION.URL
  • %Application Data%\Microsoft\Windows Media\9.0\WMSDKNS.DTD.hh8
  • %Application Data%\Microsoft\Windows Media\9.0\DECRYPT_INSTRUCTION.TXT
  • %Application Data%\Microsoft\Windows Media\9.0\DECRYPT_INSTRUCTION.HTML
  • %Application Data%\Microsoft\Windows Media\9.0\DECRYPT_INSTRUCTION.URL
  • %Application Data%\Microsoft\Windows Media\DECRYPT_INSTRUCTION.TXT
  • %Application Data%\Microsoft\Windows Media\DECRYPT_INSTRUCTION.HTML
  • %Application Data%\Microsoft\Windows Media\DECRYPT_INSTRUCTION.URL
  • %Application Data%\Microsoft\DECRYPT_INSTRUCTION.TXT
  • %Application Data%\Microsoft\DECRYPT_INSTRUCTION.HTML
  • %Application Data%\Microsoft\DECRYPT_INSTRUCTION.URL
  • %Application Data%\DECRYPT_INSTRUCTION.TXT
  • %Application Data%\DECRYPT_INSTRUCTION.HTML
  • %Application Data%\DECRYPT_INSTRUCTION.URL
  • %User Profile%\Local Settings\DECRYPT_INSTRUCTION.TXT
  • %User Profile%\Local Settings\DECRYPT_INSTRUCTION.HTML
  • %User Profile%\Local Settings\DECRYPT_INSTRUCTION.URL
  • %User Profile%\Templates\excel.xls.z0e
  • %User Profile%\Templates\excel4.xls.50t
  • %User Profile%\Templates\powerpnt.ppt.g29
  • %User Profile%\Templates\quattro.wb2.2nz
  • %User Profile%\Templates\sndrec.wav.3zu
  • %User Profile%\Templates\winword.doc.k9o
  • %User Profile%\Templates\winword2.doc.347
  • %User Profile%\Templates\wordpfct.wpd.np7
  • %User Profile%\Templates\DECRYPT_INSTRUCTION.TXT
  • %User Profile%\Templates\DECRYPT_INSTRUCTION.HTML
  • %User Profile%\Templates\DECRYPT_INSTRUCTION.URL
  • %User Profile%\DECRYPT_INSTRUCTION.TXT
  • %User Profile%\DECRYPT_INSTRUCTION.HTML
  • %User Profile%\DECRYPT_INSTRUCTION.URL
  • %User Profile%\Internet Explorer\brndlog.bak.952
  • %User Profile%\Internet Explorer\brndlog.txt.j95
  • %User Profile%\Cookies\wilbert@atdmt[2].txt.9fu
  • %User Profile%\Cookies\wilbert@atdmt[2].txt
  • %User Profile%\Cookies\wilbert@bing[2].txt.971
  • %User Profile%\Cookies\wilbert@bing[2].txt
  • %User Profile%\Cookies\wilbert@c.atdmt[2].txt.a7n
  • %User Profile%\Cookies\wilbert@c.atdmt[2].txt
  • %User Profile%\Cookies\wilbert@c.msn[2].txt.19l
  • %User Profile%\Cookies\wilbert@c.msn[2].txt
  • %User Profile%\Cookies\wilbert@doubleclick[1].txt.7t7
  • %User Profile%\Cookies\wilbert@doubleclick[1].txt
  • %User Profile%\Cookies\wilbert@microsoft[1].txt.d0a
  • %User Profile%\Cookies\wilbert@microsoft[1].txt
  • %User Profile%\Cookies\wilbert@msnportal.112.2o7[1].txt.3xw
  • %User Profile%\Cookies\wilbert@msnportal.112.2o7[1].txt
  • %User Profile%\Cookies\wilbert@msn[2].txt.c8v
  • %User Profile%\Cookies\wilbert@msn[2].txt
  • %User Profile%\Cookies\wilbert@scorecardresearch[2].txt.6z3
  • %User Profile%\Cookies\wilbert@scorecardresearch[2].txt
  • %User Profile%\Cookies\wilbert@www.bing[2].txt.2m0
  • %User Profile%\Cookies\wilbert@www.bing[2].txt
  • %User Profile%\Cookies\wilbert@www.msn[1].txt.j6f
  • %User Profile%\Cookies\wilbert@www.msn[1].txt
  • %User Profile%\Cookies\DECRYPT_INSTRUCTION.TXT
  • %User Profile%\Cookies\DECRYPT_INSTRUCTION.HTML
  • %User Profile%\Cookies\DECRYPT_INSTRUCTION.URL
  • %Application Data%\Microsoft\Windows Media\9.0\WMSDKNS.DTD.6vj
  • %User Profile%\Templates\excel.xls.8eu
  • %User Profile%\Templates\excel4.xls.7ut
  • %User Profile%\Templates\powerpnt.ppt.1wk
  • %User Profile%\Templates\quattro.wb2.cp0
  • %User Profile%\Templates\sndrec.wav.k4m
  • %User Profile%\Templates\winword.doc.5uf
  • %User Profile%\Templates\winword2.doc.9y5
  • %User Profile%\Templates\wordpfct.wpd.ky5
  • %System Root%\Documents and Settings\DECRYPT_INSTRUCTION.TXT
  • %System Root%\Documents and Settings\DECRYPT_INSTRUCTION.HTML
  • %System Root%\Documents and Settings\DECRYPT_INSTRUCTION.URL
  • %System Root%\DECRYPT_INSTRUCTION.TXT
  • %System Root%\DECRYPT_INSTRUCTION.HTML
  • %System Root%\DECRYPT_INSTRUCTION.URL
  • %Desktop%\DECRYPT_INSTRUCTION.TXT
  • %Desktop%\DECRYPT_INSTRUCTION.HTML
  • %Desktop%\DECRYPT_INSTRUCTION.URL
  • %User Startup%\DECRYPT_INSTRUCTION.TXT
  • %User Startup%\DECRYPT_INSTRUCTION.HTML
  • %User Startup%\DECRYPT_INSTRUCTION.URL

Step 7

Reinicie en modo normal y explore el equipo con su producto de Trend Micro para buscar los archivos identificados como TROJ_CRYPDEF.BTZ 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.

Step 8

Restaurar este archivo a partir de una copia de seguridad Solo se pueden restaurar los archivos relacionados con Microsoft. En caso de que este malware/grayware/spyware también haya eliminado archivos relativos a programas que no sean de Microsoft, vuelva a instalar los programas en cuestión en el equipo.

  • %Application Data%\Microsoft\Windows Media\9.0\WMSDKNS.DTD
  • %User Profile%\Templates\excel.xls
  • %User Profile%\Templates\excel4.xls
  • %User Profile%\Templates\powerpnt.ppt
  • %User Profile%\Templates\quattro.wb2
  • %User Profile%\Templates\sndrec.wav
  • %User Profile%\Templates\winword.doc
  • %User Profile%\Templates\winword2.doc
  • %User Profile%\Templates\wordpfct.wpd


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