TROJ_STARTPAGE

Publish Date: 09 de октября de 2012

StartPa

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

INFECTION CHANNEL: Descargado de Internet

TECHNICAL DETAILS

Memory resident: Yes

PAYLOAD: Modifies HOSTS file

Instalación

Infiltra los archivos siguientes:

%Program Files%\Thunder\Wrper.syc
%System Root%\Documents and Settings\All Users\Desktop\Internet Explorer.lnk
%Windows%\Web\oslogo.bmp
%Windows%\Web\tips.ini
%Windows%\Web\win.def
%Windows%\default.css
%Windows%\hh.htt

(Nota: %Program Files% es la carpeta Archivos de programa predeterminada, que suele estar en C:\Archivos de programa).

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

. %Windows% es la carpeta de Windows, que suele estar en C:\Windows o C:\WINNT).

)

Crea las carpetas siguientes:

%Program Files%\Thunder

(Nota: %Program Files% es la carpeta Archivos de programa predeterminada, que suele estar en C:\Archivos de programa).

)

Otras modificaciones del sistema

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

HKEY_CLASSES_ROOT\lnkfile\shell

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Search

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Styles

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
ZoneMap\Domains\msn.com

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
lnkfile\shell

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
ZoneMap\Domains\{BLOCKED}search.com

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

HKEY_CLASSES_ROOT\lnkfile\shell\
open\command
{default} = ""%System%\WScript.exe" "%Program Files%\Thunder\Wrper.syc" "%1" %*"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer
Search = "http://acc.{BLOCKED}all.com/--/?pgdoc"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer
Search = "http://in.{BLOCKED}nter.cc/--/?khsnt"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer
Search = "http://www.{BLOCKED}search.com/z/b/x1.cgi?344012"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer
SearchURL = "http://www.{BLOCKED}search.com/z/b/x1.cgi?344012"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer
Search = "http://www.{BLOCKED}search.com/z/b/x1.cgi?656387"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer
SearchURL = "http://acc.{BLOCKED}all.com/--/?pgdoc"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer
SearchURL = "http://in.{BLOCKED}nter.cc/--/?khsnt"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer
SearchURL = "http://www.{BLOCKED}search.com/z/b/x1.cgi?656387"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Default_Page_URL = "http://acc.{BLOCKED}all.com/-/?pgdoc"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Default_Page_URL = "http://in.{BLOCKED}nter.cc/-/?khsn"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Default_Page_URL = "http://www.{BLOCKED}search.com/z/a/x1.cgi?344012"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Default_Page_URL = "http://www.{BLOCKED}search.com/z/a/x1.cgi?656387"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Default_Search_URL = "http://acc.{BLOCKED}all.com/--/?pgdoc"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Default_Search_URL = "http://in.{BLOCKED}nter.cc/--/?khsnt"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Default_Search_URL = "http://www.{BLOCKED}search.com/z/b/x1.cgi?344012"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Default_Search_URL = "http://www.{BLOCKED}search.com/z/b/x1.cgi?656387"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
HOMEOldSP = "http://www.{BLOCKED}search.com/z/a/x1.cgi?344012"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
HOMEOldSP = "http://www.{BLOCKED}search.com/z/a/x1.cgi?656387"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Search Bar = "http://acc.{BLOCKED}all.com/---/?pgdoc"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Search Bar = "http://in.{BLOCKED}nter.cc/---/?khsnt"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Search Bar = "http://www.{BLOCKED}search.com/z/c/x1.cgi?344012"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Search Bar = "http://www.{BLOCKED}search.com/z/c/x1.cgi?656387"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Use Search Assistant = "yes"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Search
CustomizeSearch = "http://acc.{BLOCKED}all.com/--/?pgdoc"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Search
CustomizeSearch = "http://in.{BLOCKED}nter.cc/--/?khsnt"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Search
CustomizeSearch = "http://www.{BLOCKED}search.com/z/b/x1.cgi?344012"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Search
CustomizeSearch = "http://www.{BLOCKED}search.com/z/b/x1.cgi?656387"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Search
SearchAssistant = "http://acc.{BLOCKED}all.com/---/?pgdoc"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Search
SearchAssistant = "http://in.{BLOCKED}nter.cc/---/?khsnt"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Search
SearchAssistant = "http://www.{BLOCKED}search.com/z/b/x1.cgi?344012"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Search
SearchAssistant = "http://www.{BLOCKED}search.com/z/b/x1.cgi?656387"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Styles
Use My Stylesheet = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Styles
User Stylesheet = "%Windows%\Web\oslogo.bmp"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Styles
User Stylesheet = "%Windows%\Web\tips.ini"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Styles
User Stylesheet = "%Windows%\Web\win.def"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
lnkfile\shell\open\
command
{default} = ""%System%\WScript.exe" "%Program Files%\Thunder\Wrper.syc" "%1" %*"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer
Search = "http://acc.{BLOCKED}all.com/--/?pgdoc"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer
Search = "http://in.{BLOCKED}nter.cc/--/?khsnt"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer
Search = "http://www.{BLOCKED}search.com/z/b/x1.cgi?344012"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer
Search = "http://www.{BLOCKED}search.com/z/b/x1.cgi?656387"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Main
Use Search Assistant = "yes"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Styles
Use My Stylesheet = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Styles
User Stylesheet = "%Windows%\Web\oslogo.bmp"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Styles
User Stylesheet = "%Windows%\default.css"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Styles
User Stylesheet = "%Windows%\hh.htt"

Modifica las siguientes entradas de registro:

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Start Page = "http://www.{BLOCKED}search.com/z/a/x1.cgi?656387 about:blank "