TROJ_SMALL_0000075.TOMA
TrojanDownloader:Win32/Small.VT (Microsoft); StartPage-DL (McAfee); Trojan.Startpage (Symantec); PAK:ASPack (Kaspersky); BehavesLike.Win32.Malware.bph (mx-v) (Sunbelt); Trojan.Downloader.Small.VT (FSecure)
Windows 2000, Windows XP, Windows Server 2003
Threat Type:
Trojan
Destructiveness:
No
Encrypted:
In the wild::
Yes
OVERVIEW
Elimina archivos para impedir la ejecución correcta de programas y aplicaciones.
TECHNICAL DETAILS
Instalación
Crea las siguientes copias de sí mismo en el sistema afectado:
- %System%\winmm64.exe
(Nota: %System% es la carpeta del sistema de Windows, que en el caso de Windows 98 y ME suele estar en C:\Windows\System, en el caso de Windows NT y 2000 en C:\WINNT\System32 y en el caso de Windows XP y Server 2003 en C:\Windows\System32).
)Crea las carpetas siguientes:
- %Favorites%\Free Adult Pics and Movies
- %Favorites%\E-Business News
- %Favorites%\Health News
- %Favorites%\Shopping News
- %Favorites%\Online Pharmacy News
- %Favorites%\Online Gambling News
- %Favorites%\Antiviruses, Software, Computers
(Nota: %Favorites% es la carpeta Favoritos del usuario activo, que en el caso de Windows 98 y ME suele estar en C:\Windows\Favorites, en el caso de Windows NT en C:\WINNT\Profiles\{nombre de usuario}\Favoritos y en Windows 2000, XP y Server 2003 en C:\Documents and Settings\{nombre de usuario}\Favoritos).
)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
SpywareGuardPlus = "{malware path and file name}"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
SpywareGuardPlus = "%System%\winmm64.exe"
Otras modificaciones del sistema
Elimina los archivos siguientes:
- memtest32.sys
Agrega las siguientes entradas de registro como parte de la rutina de instalación:
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Search
HKEY_LOCAL_MACHINE\Software\Microsoft\
Internet Explorer\SearchUrl
Agrega las siguientes entradas de registro:
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Search Bar = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\SearchUrl
SearchUrl = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer
SearchUrl = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Search
SearchAssistant = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Main
Search Bar = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\SearchUrl
SearchUrl = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer
SearchUrl = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
Modifica las siguientes entradas de registro:
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Start Page = "http://{BLOCKED}rect.com/?b=n-cfh-andy"
(Note: The default value data of the said registry entry is http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome.)
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Search Page = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
(Note: The default value data of the said registry entry is http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Main
Search Page = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
(Note: The default value data of the said registry entry is http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Search
SearchAssistant = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
(Note: The default value data of the said registry entry is http://ie.search.msn.com/{SUB_RFC1766}/srchasst/srchasst.htm.)
Rutina de infiltración
Infiltra los archivos siguientes:
- %System%\favico.dat
- %Favorites%\Free Adult Pics and Movies\Zoo.url
- %Favorites%\Free Adult Pics and Movies\Incest.url
- %Favorites%\Free Adult Pics and Movies\Rape.url
- %Favorites%\Free Adult Pics and Movies\Anal Rape.url
- %Favorites%\Free Adult Pics and Movies\Sex.url
- %Favorites%\Free Adult Pics and Movies\Free Porn.url
- %Favorites%\Free Adult Pics and Movies\Escorts.url
- %Favorites%\Free Adult Pics and Movies\Penis Enlargement.url
- %Favorites%\Free Adult Pics and Movies\Single Girls.url
- %Favorites%\Free Adult Pics and Movies\Sex Video.url
- %Favorites%\Free Adult Pics and Movies\Hardcore.url
- %Favorites%\Free Adult Pics and Movies\Amateur Sex.url
- %Favorites%\Free Adult Pics and Movies\Porn.url
- %Favorites%\Free Adult Pics and Movies\Teen Sex.url
- %Favorites%\Free Adult Pics and Movies\Gay.url
- %Favorites%\Free Adult Pics and Movies\Free Sex.url
- %Favorites%\Free Adult Pics and Movies\Pussy.url
- %Favorites%\Free Adult Pics and Movies\Animal Sex.url
- %Favorites%\Free Adult Pics and Movies\Asian Sex.url
- %Favorites%\Free Adult Pics and Movies\Mature Sex.url
- %Favorites%\Free Adult Pics and Movies\Group Sex.url
- %Favorites%\Free Adult Pics and Movies\Anal.url
- %Favorites%\E-Business News\Online Trading.url
- %Favorites%\E-Business News\Internet.url
- %Favorites%\E-Business News\Web Site Design.url
- %Favorites%\E-Business News\Web Hosting.url
- %Favorites%\E-Business News\Affiliate Program.url
- %Favorites%\E-Business News\Domain Names.url
- %Favorites%\Health News\Health Insurance.url
- %Favorites%\Health News\Fitness.url
- %Favorites%\Health News\Women Health.url
- %Favorites%\Health News\Nutrition.url
- %Favorites%\Health News\Diet.url
- %Favorites%\Health News\Men Health.url
- %Favorites%\Shopping News\Skin Care.url
- %Favorites%\Shopping News\Computers.url
- %Favorites%\Shopping News\Cosmetics.url
- %Favorites%\Shopping News\Gifts.url
- %Favorites%\Shopping News\Electronics.url
- %Favorites%\Shopping News\Auto.url
- %Favorites%\Shopping News\Books.url
- %Favorites%\Shopping News\Clothing.url
- %Favorites%\Online Pharmacy News\Online Pharmacy.url
- %Favorites%\Online Pharmacy News\Viagra.url
- %Favorites%\Online Pharmacy News\Tramadol.url
- %Favorites%\Online Pharmacy News\Phentermine.url
- %Favorites%\Online Pharmacy News\Valium.url
- %Favorites%\Online Pharmacy News\Xanax.url
- %Favorites%\Online Pharmacy News\Adipex.url
- %Favorites%\Online Pharmacy News\Penis Pills.url
- %Favorites%\Online Pharmacy News\Carisoprodol.url
- %Favorites%\Online Pharmacy News\Drug.url
- %Favorites%\Online Gambling News\Poker.url
- %Favorites%\Online Gambling News\Online Casino.url
- %Favorites%\Online Gambling News\Online Gambling.url
- %Favorites%\Online Gambling News\Casino.url
- %Favorites%\Online Gambling News\Online Poker.url
- %Favorites%\Online Gambling News\Black Jack.url
- %Favorites%\Online Gambling News\Casino Games.url
- %Favorites%\Online Gambling News\Home Business and Finances.url
- %Favorites%\Antiviruses, Software, Computers\Antivirus.url
- %Favorites%\Antiviruses, Software, Computers\Spyware.url
- %Favorites%\Antiviruses, Software, Computers\Spyware Remover.url
- %Favorites%\Antiviruses, Software, Computers\Software.url
- %Favorites%\Antiviruses, Software, Computers\Hosting.url
- %Favorites%\100% FREE RANDOM ADULT SITE!.url
- %Favorites%\FREE ANIMAL SEX, INCEST, TEEN SEX, MATURE SEX AND MORE!.url
- %Favorites%\Animal sex.url
- %Favorites%\Anal Rape (raped teens).url
- %Favorites%\incest sex (Dad and daughter, Mom and son).url
- %Favorites%\Spyware remover.url
(Nota: %System% es la carpeta del sistema de Windows, que en el caso de Windows 98 y ME suele estar en C:\Windows\System, en el caso de Windows NT y 2000 en C:\WINNT\System32 y en el caso de Windows XP y Server 2003 en C:\Windows\System32).
. %Favorites% es la carpeta Favoritos del usuario activo, que en el caso de Windows 98 y ME suele estar en C:\Windows\Favorites, en el caso de Windows NT en C:\WINNT\Profiles\{nombre de usuario}\Favoritos y en Windows 2000, XP y Server 2003 en C:\Documents and Settings\{nombre de usuario}\Favoritos).)
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
Reiniciar en modo seguro
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_CURRENT_USER\Software\Microsoft\Internet Explorer
- Search
- In HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer
- SearchUrl
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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- SpywareGuardPlus = "{malware path and file name}"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- SpywareGuardPlus = "%System%\winmm64.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
- Search Bar = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchUrl
- SearchUrl = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer
- SearchUrl = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Search
- SearchAssistant = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main
- Search Bar = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\SearchUrl
- SearchUrl = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer
- SearchUrl = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
Step 5
Restaurar este valor del Registro modificado
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\Internet Explorer\Main
- From: Start Page = "http://{BLOCKED}rect.com/?b=n-cfh-andy"
To: Start Page = ""http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome""
- From: Start Page = "http://{BLOCKED}rect.com/?b=n-cfh-andy"
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
- From: Search Page = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
To: Search Page = ""http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch""
- From: Search Page = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main
- From: Search Page = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
To: Search Page = ""http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch""
- From: Search Page = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Search
- From: SearchAssistant = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
To: SearchAssistant = ""http://ie.search.msn.com/{SUB_RFC1766}/srchasst/srchasst.htm""
- From: SearchAssistant = "http://{BLOCKED}rect.com/?a=2&b=n-cfh-andy"
Step 6
Buscar y eliminar estos archivos
- %System%\favico.dat
- %Favorites%\Free Adult Pics and Movies\Zoo.url
- %Favorites%\Free Adult Pics and Movies\Incest.url
- %Favorites%\Free Adult Pics and Movies\Rape.url
- %Favorites%\Free Adult Pics and Movies\Anal Rape.url
- %Favorites%\Free Adult Pics and Movies\Sex.url
- %Favorites%\Free Adult Pics and Movies\Free Porn.url
- %Favorites%\Free Adult Pics and Movies\Escorts.url
- %Favorites%\Free Adult Pics and Movies\Penis Enlargement.url
- %Favorites%\Free Adult Pics and Movies\Single Girls.url
- %Favorites%\Free Adult Pics and Movies\Sex Video.url
- %Favorites%\Free Adult Pics and Movies\Hardcore.url
- %Favorites%\Free Adult Pics and Movies\Amateur Sex.url
- %Favorites%\Free Adult Pics and Movies\Porn.url
- %Favorites%\Free Adult Pics and Movies\Teen Sex.url
- %Favorites%\Free Adult Pics and Movies\Gay.url
- %Favorites%\Free Adult Pics and Movies\Free Sex.url
- %Favorites%\Free Adult Pics and Movies\Pussy.url
- %Favorites%\Free Adult Pics and Movies\Animal Sex.url
- %Favorites%\Free Adult Pics and Movies\Asian Sex.url
- %Favorites%\Free Adult Pics and Movies\Mature Sex.url
- %Favorites%\Free Adult Pics and Movies\Group Sex.url
- %Favorites%\Free Adult Pics and Movies\Anal.url
- %Favorites%\E-Business News\Online Trading.url
- %Favorites%\E-Business News\Internet.url
- %Favorites%\E-Business News\Web Site Design.url
- %Favorites%\E-Business News\Web Hosting.url
- %Favorites%\E-Business News\Affiliate Program.url
- %Favorites%\E-Business News\Domain Names.url
- %Favorites%\Health News\Health Insurance.url
- %Favorites%\Health News\Fitness.url
- %Favorites%\Health News\Women Health.url
- %Favorites%\Health News\Nutrition.url
- %Favorites%\Health News\Diet.url
- %Favorites%\Health News\Men Health.url
- %Favorites%\Shopping News\Skin Care.url
- %Favorites%\Shopping News\Computers.url
- %Favorites%\Shopping News\Cosmetics.url
- %Favorites%\Shopping News\Gifts.url
- %Favorites%\Shopping News\Electronics.url
- %Favorites%\Shopping News\Auto.url
- %Favorites%\Shopping News\Books.url
- %Favorites%\Shopping News\Clothing.url
- %Favorites%\Online Pharmacy News\Online Pharmacy.url
- %Favorites%\Online Pharmacy News\Viagra.url
- %Favorites%\Online Pharmacy News\Tramadol.url
- %Favorites%\Online Pharmacy News\Phentermine.url
- %Favorites%\Online Pharmacy News\Valium.url
- %Favorites%\Online Pharmacy News\Xanax.url
- %Favorites%\Online Pharmacy News\Adipex.url
- %Favorites%\Online Pharmacy News\Penis Pills.url
- %Favorites%\Online Pharmacy News\Carisoprodol.url
- %Favorites%\Online Pharmacy News\Drug.url
- %Favorites%\Online Gambling News\Poker.url
- %Favorites%\Online Gambling News\Online Casino.url
- %Favorites%\Online Gambling News\Online Gambling.url
- %Favorites%\Online Gambling News\Casino.url
- %Favorites%\Online Gambling News\Online Poker.url
- %Favorites%\Online Gambling News\Black Jack.url
- %Favorites%\Online Gambling News\Casino Games.url
- %Favorites%\Online Gambling News\Home Business and Finances.url
- %Favorites%\Antiviruses, Software, Computers\Antivirus.url
- %Favorites%\Antiviruses, Software, Computers\Spyware.url
- %Favorites%\Antiviruses, Software, Computers\Spyware Remover.url
- %Favorites%\Antiviruses, Software, Computers\Software.url
- %Favorites%\Antiviruses, Software, Computers\Hosting.url
- %Favorites%\100% FREE RANDOM ADULT SITE!.url
- %Favorites%\FREE ANIMAL SEX, INCEST, TEEN SEX, MATURE SEX AND MORE!.url
- %Favorites%\Animal sex.url
- %Favorites%\Anal Rape (raped teens).url
- %Favorites%\incest sex (Dad and daughter, Mom and son).url
- %Favorites%\Spyware remover.url
Step 7
Buscar y eliminar estas carpetas
- %Favorites%\Free Adult Pics and Movies
- %Favorites%\E-Business News
- %Favorites%\Health News
- %Favorites%\Shopping News
- %Favorites%\Online Pharmacy News
- %Favorites%\Online Gambling News
- %Favorites%\Antiviruses, Software, Computers
Step 8
Reinicie en modo normal y explore el equipo con su producto de Trend Micro para buscar los archivos identificados como TROJ_SMALL_0000075.TOMA 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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