PLATFORM:

Windows

 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

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

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

Este malware se elimina tras la ejecución.

  TECHNICAL DETAILS

File size: 310,272 bytes
File type: EXE
Memory resident: Yes
INITIAL SAMPLES RECEIVED DATE: 28 февраля 2020

Detalles de entrada

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

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
cb8b48 = "%System Root%\cb8b48d\cb8b48d.exe"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
cb8b48d = "%User Profile%\Application Data\cb8b48d.exe"

Este malware infiltra el/los archivo(s) siguiente(s) en la carpeta de inicio del usuario de Windows para permitir su ejecución automática cada vez que se inicia el sistema:

  • %User Startup%\cb8b48d.exe
  • %User Startup%\HELP_DECRYPT.TXT
  • %User Startup%\HELP_DECRYPT.HTML
  • %User Startup%\HELP_DECRYPT.URL
  • %User Startup%\HELP_DECRYPT.PNG

(Nota: %User Startup% es la carpeta Inicio del usuario activo, que en el caso de Windows 98 y ME suele estar en C:\Windows\Profiles\{nombre de usuario}\Menú Inicio\Programas\Inicio, en el caso de Windows NT en C:\WINNT\Profiles\{nombre de usuario}\Menú Inicio\Programas\Inicio, en el caso de Windows 2003(32-bit), XP y 2000(32-bit) en C:\Documents and Settings\{nombre de usuario}\Menú Inicio\Programas\Inicio y en en el caso de Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) y 10(64-bit) en C:\Users\{nombre de usuario}\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup).

)

Otras modificaciones del sistema

Elimina los archivos siguientes:

  • %System Root%\cb8b48d

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

)

Agrega las siguientes entradas de registro:

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D
5k = "{random values}"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D
8u = "{random characters}"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D
3r = "{random characters}"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D
fv = "{random characters}"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Internet Explorer\brndlog.bak = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Internet Explorer\brndlog.txt = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%Application Data%\Microsoft\Windows Media\9.0\WMSDKNS.DTD = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Templates\excel.xls = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Templates\excel4.xls = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Templates\powerpnt.ppt = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Templates\quattro.wb2 = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Templates\sndrec.wav = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Templates\winword.doc = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Templates\winword2.doc = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Templates\wordpfct.wpd = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Cookies\wilbert@atdmt[2].txt = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Cookies\wilbert@bing[2].txt = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Cookies\wilbert@c.atdmt[2].txt = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Cookies\wilbert@c.msn[2].txt = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Cookies\wilbert@doubleclick[1].txt = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Cookies\wilbert@microsoft[1].txt = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Cookies\wilbert@msnportal.112.2o7[1].txt = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Cookies\wilbert@msn[2].txt = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Cookies\wilbert@scorecardresearch[2].txt = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%User Profile%\Cookies\wilbert@www.bing[2].txt = "68adfd"

HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\
022334456779CDEE
%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%\cb8b48d\cb8b48d.exe
  • %User Profile%\Application Data\cb8b48d.exe
  • A:\HELP_DECRYPT.TXT
  • A:\HELP_DECRYPT.HTML
  • %User Profile%\Internet Explorer\brndlog.bak.563
  • A:\HELP_DECRYPT.URL
  • %User Profile%\Internet Explorer\brndlog.txt.xn8
  • %User Profile%\Internet Explorer\HELP_DECRYPT.TXT
  • %User Profile%\Internet Explorer\HELP_DECRYPT.HTML
  • %User Profile%\Internet Explorer\HELP_DECRYPT.URL
  • %User Profile%\Internet Explorer\HELP_DECRYPT.PNG
  • %User Profile%\Microsoft\HELP_DECRYPT.TXT
  • %User Profile%\Microsoft\HELP_DECRYPT.HTML
  • %User Profile%\Microsoft\HELP_DECRYPT.URL
  • %User Profile%\Microsoft\HELP_DECRYPT.PNG
  • A:\HELP_DECRYPT.PNG
  • %User Profile%\Application Data\HELP_DECRYPT.TXT
  • %User Profile%\Application Data\HELP_DECRYPT.HTML
  • %User Profile%\Application Data\HELP_DECRYPT.URL
  • %User Profile%\Application Data\HELP_DECRYPT.PNG
  • %Application Data%\Microsoft\Windows Media\9.0\WMSDKNS.DTD.y0c
  • %Application Data%\Microsoft\Windows Media\9.0\HELP_DECRYPT.TXT
  • %Application Data%\Microsoft\Windows Media\9.0\HELP_DECRYPT.HTML
  • %Application Data%\Microsoft\Windows Media\9.0\HELP_DECRYPT.URL
  • %Application Data%\Microsoft\Windows Media\9.0\HELP_DECRYPT.PNG
  • %Application Data%\Microsoft\Windows Media\HELP_DECRYPT.TXT
  • %Application Data%\Microsoft\Windows Media\HELP_DECRYPT.HTML
  • %Application Data%\Microsoft\Windows Media\HELP_DECRYPT.URL
  • %Application Data%\Microsoft\Windows Media\HELP_DECRYPT.PNG
  • %Application Data%\Microsoft\HELP_DECRYPT.TXT
  • %Application Data%\Microsoft\HELP_DECRYPT.HTML
  • %Application Data%\Microsoft\HELP_DECRYPT.URL
  • %Application Data%\Microsoft\HELP_DECRYPT.PNG
  • %Application Data%\HELP_DECRYPT.TXT
  • %Application Data%\HELP_DECRYPT.HTML
  • %Application Data%\HELP_DECRYPT.URL
  • %Application Data%\HELP_DECRYPT.PNG
  • %User Profile%\Local Settings\HELP_DECRYPT.TXT
  • %User Profile%\Local Settings\HELP_DECRYPT.HTML
  • %User Profile%\Local Settings\HELP_DECRYPT.URL
  • %User Profile%\Local Settings\HELP_DECRYPT.PNG
  • %User Profile%\Templates\excel.xls.9kn
  • %User Profile%\Templates\excel4.xls.r95
  • %User Profile%\Templates\powerpnt.ppt.xt0
  • %User Profile%\Templates\quattro.wb2.980
  • %User Profile%\Templates\sndrec.wav.f67
  • %User Profile%\Templates\winword.doc.u4s
  • %User Profile%\Templates\winword2.doc.3uo
  • %User Profile%\Templates\wordpfct.wpd.r34
  • %User Profile%\Templates\HELP_DECRYPT.TXT
  • %User Profile%\Templates\HELP_DECRYPT.HTML
  • %User Profile%\Templates\HELP_DECRYPT.URL
  • %User Profile%\Templates\HELP_DECRYPT.PNG
  • %User Profile%\HELP_DECRYPT.TXT
  • %User Profile%\HELP_DECRYPT.HTML
  • %User Profile%\HELP_DECRYPT.URL
  • %User Profile%\HELP_DECRYPT.PNG
  • %User Profile%\Internet Explorer\brndlog.bak.uo4
  • %User Profile%\Internet Explorer\brndlog.txt.k92
  • %User Profile%\Cookies\wilbert@atdmt[2].txt.7w6
  • %User Profile%\Cookies\wilbert@bing[2].txt.nv4
  • %User Profile%\Cookies\wilbert@c.atdmt[2].txt.74t
  • %User Profile%\Cookies\wilbert@c.msn[2].txt.81n
  • %User Profile%\Cookies\wilbert@doubleclick[1].txt.s77
  • %User Profile%\Cookies\wilbert@microsoft[1].txt.7i6
  • %User Profile%\Cookies\wilbert@msnportal.112.2o7[1].txt.yo9
  • %User Profile%\Cookies\wilbert@msn[2].txt.wr9
  • %User Profile%\Cookies\wilbert@scorecardresearch[2].txt.75u
  • %User Profile%\Cookies\wilbert@www.bing[2].txt.1uk
  • %User Profile%\Cookies\wilbert@www.msn[1].txt.mk0
  • %User Profile%\Cookies\HELP_DECRYPT.TXT
  • %User Profile%\Cookies\HELP_DECRYPT.HTML
  • %User Profile%\Cookies\HELP_DECRYPT.URL
  • %User Profile%\Cookies\HELP_DECRYPT.PNG
  • %Application Data%\Microsoft\Windows Media\9.0\WMSDKNS.DTD.24d
  • %User Profile%\Templates\excel.xls.d6d
  • %User Profile%\Templates\excel4.xls.4ki
  • %User Profile%\Templates\powerpnt.ppt.i0q
  • %User Profile%\Templates\quattro.wb2.k0e
  • %User Profile%\Templates\sndrec.wav.ck2
  • %User Profile%\Templates\winword.doc.5ah
  • %User Profile%\Templates\winword2.doc.4xc
  • %User Profile%\Templates\wordpfct.wpd.3xx
  • %System Root%\Documents and Settings\HELP_DECRYPT.TXT
  • %System Root%\Documents and Settings\HELP_DECRYPT.HTML
  • %System Root%\Documents and Settings\HELP_DECRYPT.URL
  • %System Root%\Documents and Settings\HELP_DECRYPT.PNG
  • %System Root%\HELP_DECRYPT.TXT
  • %System Root%\HELP_DECRYPT.HTML
  • %System Root%\HELP_DECRYPT.URL
  • %System Root%\HELP_DECRYPT.PNG
  • %Desktop%\HELP_DECRYPT.TXT
  • %Desktop%\HELP_DECRYPT.HTML
  • %Desktop%\HELP_DECRYPT.URL
  • %Desktop%\HELP_DECRYPT.PNG

Otros detalles

It connects to the following possibly malicious URL:

  • http://{BLOCKED}r.es
  • http://{BLOCKED}com.com/EPSUrj.php?k=30j9ada7npgiy
  • http://{BLOCKED}com.com/nm9Eul.php?b=30j9ada7npgiy
  • http://{BLOCKED}com.com/fQu7UH.php?i=30j9ada7npgiy
  • http://{BLOCKED}com.com/evYR0G.php?m=30j9ada7npgiy
  • http://{BLOCKED}com.com/R4uGnH.php?t=30j9ada7npgiy
  • http://{BLOCKED}com.com/EPSUrj.php?v=506e19irnyko
  • http://{BLOCKED}com.com/nm9Eul.php?s=506e19irnyko
  • http://{BLOCKED}com.com/fQu7UH.php?k=506e19irnyko
  • http://{BLOCKED}com.com/evYR0G.php?d=506e19irnyko
  • http://{BLOCKED}com.com/R4uGnH.php?e=506e19irnyko
  • http://{BLOCKED}com.com/EPSUrj.php?v=f10i9il9fcw7x5
  • http://{BLOCKED}com.com/nm9Eul.php?y=f10i9il9fcw7x5
  • http://{BLOCKED}com.com/fQu7UH.php?y=f10i9il9fcw7x5
  • http://{BLOCKED}com.com/evYR0G.php?r=f10i9il9fcw7x5
  • http://{BLOCKED}com.com/R4uGnH.php?v=f10i9il9fcw7x5
  • http://{BLOCKED}com.com/EPSUrj.php?r=5u16fdys4z
  • http://{BLOCKED}com.com/nm9Eul.php?d=5u16fdys4z
  • http://{BLOCKED}com.com/fQu7UH.php?h=5u16fdys4z
  • http://{BLOCKED}com.com/evYR0G.php?a=5u16fdys4z
  • http://{BLOCKED}com.com/R4uGnH.php?n=5u16fdys4z
  • {BLOCKED}5.164.184
  • {BLOCKED}2.78.160
  • {BLOCKED}8.215.210
  • {BLOCKED}8.47.225
  • {BLOCKED}2.127.240
  • {BLOCKED}.145.75

Este malware se elimina tras la ejecución.

  SOLUTION

Minimum scan engine: 9.850

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 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
    • cb8b48 = "%System Root%\cb8b48d\cb8b48d.exe"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • cb8b48d = "%User Profile%\Application Data\cb8b48d.exe"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D
    • 5k = "{random values}"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D
    • 8u = "{random characters}"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D
    • 3r = "{random characters}"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D
    • fv = "{random characters}"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Internet Explorer\brndlog.bak = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Internet Explorer\brndlog.txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %Application Data%\Microsoft\Windows Media\9.0\WMSDKNS.DTD = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Templates\excel.xls = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Templates\excel4.xls = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Templates\powerpnt.ppt = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Templates\quattro.wb2 = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Templates\sndrec.wav = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Templates\winword.doc = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Templates\winword2.doc = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Templates\wordpfct.wpd = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Cookies\wilbert@atdmt[2].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Cookies\wilbert@bing[2].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Cookies\wilbert@c.atdmt[2].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Cookies\wilbert@c.msn[2].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Cookies\wilbert@doubleclick[1].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Cookies\wilbert@microsoft[1].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Cookies\wilbert@msnportal.112.2o7[1].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Cookies\wilbert@msn[2].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Cookies\wilbert@scorecardresearch[2].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Cookies\wilbert@www.bing[2].txt = "68adfd"
  • In HKEY_CURRENT_USER\Software\4C583FF312C01233EEC409362342577D\022334456779CDEE
    • %User Profile%\Cookies\wilbert@www.msn[1].txt = "68adfd"

Step 4

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 5

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%\cb8b48d\cb8b48d.exe
  • %User Profile%\Application Data\cb8b48d.exe
  • A:\HELP_DECRYPT.TXT
  • A:\HELP_DECRYPT.HTML
  • %User Profile%\Internet Explorer\brndlog.bak.563
  • A:\HELP_DECRYPT.URL
  • %User Profile%\Internet Explorer\brndlog.txt.xn8
  • %User Profile%\Internet Explorer\HELP_DECRYPT.TXT
  • %User Profile%\Internet Explorer\HELP_DECRYPT.HTML
  • %User Profile%\Internet Explorer\HELP_DECRYPT.URL
  • %User Profile%\Internet Explorer\HELP_DECRYPT.PNG
  • %User Profile%\Microsoft\HELP_DECRYPT.TXT
  • %User Profile%\Microsoft\HELP_DECRYPT.HTML
  • %User Profile%\Microsoft\HELP_DECRYPT.URL
  • %User Profile%\Microsoft\HELP_DECRYPT.PNG
  • A:\HELP_DECRYPT.PNG
  • %User Profile%\Application Data\HELP_DECRYPT.TXT
  • %User Profile%\Application Data\HELP_DECRYPT.HTML
  • %User Profile%\Application Data\HELP_DECRYPT.URL
  • %User Profile%\Application Data\HELP_DECRYPT.PNG
  • %Application Data%\Microsoft\Windows Media\9.0\WMSDKNS.DTD.y0c
  • %Application Data%\Microsoft\Windows Media\9.0\HELP_DECRYPT.TXT
  • %Application Data%\Microsoft\Windows Media\9.0\HELP_DECRYPT.HTML
  • %Application Data%\Microsoft\Windows Media\9.0\HELP_DECRYPT.URL
  • %Application Data%\Microsoft\Windows Media\9.0\HELP_DECRYPT.PNG
  • %Application Data%\Microsoft\Windows Media\HELP_DECRYPT.TXT
  • %Application Data%\Microsoft\Windows Media\HELP_DECRYPT.HTML
  • %Application Data%\Microsoft\Windows Media\HELP_DECRYPT.URL
  • %Application Data%\Microsoft\Windows Media\HELP_DECRYPT.PNG
  • %Application Data%\Microsoft\HELP_DECRYPT.TXT
  • %Application Data%\Microsoft\HELP_DECRYPT.HTML
  • %Application Data%\Microsoft\HELP_DECRYPT.URL
  • %Application Data%\Microsoft\HELP_DECRYPT.PNG
  • %Application Data%\HELP_DECRYPT.TXT
  • %Application Data%\HELP_DECRYPT.HTML
  • %Application Data%\HELP_DECRYPT.URL
  • %Application Data%\HELP_DECRYPT.PNG
  • %User Profile%\Local Settings\HELP_DECRYPT.TXT
  • %User Profile%\Local Settings\HELP_DECRYPT.HTML
  • %User Profile%\Local Settings\HELP_DECRYPT.URL
  • %User Profile%\Local Settings\HELP_DECRYPT.PNG
  • %User Profile%\Templates\excel.xls.9kn
  • %User Profile%\Templates\excel4.xls.r95
  • %User Profile%\Templates\powerpnt.ppt.xt0
  • %User Profile%\Templates\quattro.wb2.980
  • %User Profile%\Templates\sndrec.wav.f67
  • %User Profile%\Templates\winword.doc.u4s
  • %User Profile%\Templates\winword2.doc.3uo
  • %User Profile%\Templates\wordpfct.wpd.r34
  • %User Profile%\Templates\HELP_DECRYPT.TXT
  • %User Profile%\Templates\HELP_DECRYPT.HTML
  • %User Profile%\Templates\HELP_DECRYPT.URL
  • %User Profile%\Templates\HELP_DECRYPT.PNG
  • %User Profile%\HELP_DECRYPT.TXT
  • %User Profile%\HELP_DECRYPT.HTML
  • %User Profile%\HELP_DECRYPT.URL
  • %User Profile%\HELP_DECRYPT.PNG
  • %User Profile%\Internet Explorer\brndlog.bak.uo4
  • %User Profile%\Internet Explorer\brndlog.txt.k92
  • %User Profile%\Cookies\wilbert@atdmt[2].txt.7w6
  • %User Profile%\Cookies\wilbert@bing[2].txt.nv4
  • %User Profile%\Cookies\wilbert@c.atdmt[2].txt.74t
  • %User Profile%\Cookies\wilbert@c.msn[2].txt.81n
  • %User Profile%\Cookies\wilbert@doubleclick[1].txt.s77
  • %User Profile%\Cookies\wilbert@microsoft[1].txt.7i6
  • %User Profile%\Cookies\wilbert@msnportal.112.2o7[1].txt.yo9
  • %User Profile%\Cookies\wilbert@msn[2].txt.wr9
  • %User Profile%\Cookies\wilbert@scorecardresearch[2].txt.75u
  • %User Profile%\Cookies\wilbert@www.bing[2].txt.1uk
  • %User Profile%\Cookies\wilbert@www.msn[1].txt.mk0
  • %User Profile%\Cookies\HELP_DECRYPT.TXT
  • %User Profile%\Cookies\HELP_DECRYPT.HTML
  • %User Profile%\Cookies\HELP_DECRYPT.URL
  • %User Profile%\Cookies\HELP_DECRYPT.PNG
  • %Application Data%\Microsoft\Windows Media\9.0\WMSDKNS.DTD.24d
  • %User Profile%\Templates\excel.xls.d6d
  • %User Profile%\Templates\excel4.xls.4ki
  • %User Profile%\Templates\powerpnt.ppt.i0q
  • %User Profile%\Templates\quattro.wb2.k0e
  • %User Profile%\Templates\sndrec.wav.ck2
  • %User Profile%\Templates\winword.doc.5ah
  • %User Profile%\Templates\winword2.doc.4xc
  • %User Profile%\Templates\wordpfct.wpd.3xx
  • %System Root%\Documents and Settings\HELP_DECRYPT.TXT
  • %System Root%\Documents and Settings\HELP_DECRYPT.HTML
  • %System Root%\Documents and Settings\HELP_DECRYPT.URL
  • %System Root%\Documents and Settings\HELP_DECRYPT.PNG
  • %System Root%\HELP_DECRYPT.TXT
  • %System Root%\HELP_DECRYPT.HTML
  • %System Root%\HELP_DECRYPT.URL
  • %System Root%\HELP_DECRYPT.PNG
  • %Desktop%\HELP_DECRYPT.TXT
  • %Desktop%\HELP_DECRYPT.HTML
  • %Desktop%\HELP_DECRYPT.URL
  • %Desktop%\HELP_DECRYPT.PNG

Step 6

Reinicie en modo normal y explore el equipo con su producto de Trend Micro para buscar los archivos identificados como Trojan.Win32.CRYPTODEF.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.

Step 7

Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.

  • %System Root%\cb8b48d


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