Author: Nikko Tamana   
 PLATFORM:

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

 OVER ALL RISK RATING:
 REPORTED INFECTION:
 Beeinträchtigung der Systemleistung ::
 INFORMATION EXPOSURE:
Low
Medium
High
Critical

  • Threat Type:
    Adware

  • Destructiveness:
    No

  • Encrypted:
     

  • In the wild::
    Yes

  OVERVIEW


  TECHNICAL DETAILS

File size: 1,953,504 bytes
File type: EXE
Memory resident: No
INITIAL SAMPLES RECEIVED DATE: 20 maja 2013

Instalación

Este malware infiltra el/los siguiente(s) archivo(s)/componente(s):

  • %Application Data%\Delta\sqlite3.dll
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\searchplugins\delta.xml
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\user.js
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\components\FFDisp.dll
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\delta.css
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\delta.xul
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\dpk.htm
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\hlprs.js
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\arwDwn.gif
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\closeo.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\ae.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\bg.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\ch.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\cn.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\cz.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\de.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\eg.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\en.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\es.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\fr.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\gr.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\he.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\il.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\it.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\ja.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\jp.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\nl.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\no.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\pl.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\pt.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\ro.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\ru.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\sa.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\se.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\sv.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\tr.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\ua.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs\us.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\help_16.gif
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\home.gif
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\icon_seperator.png
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\logo.PNG
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\privecy_16_hot.gif
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\sign.jpg
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\specialoffer.gif
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\tellafriend.gif
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\uninstall.gif
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\loader.xul
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\mtstart.js
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\serp.js
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\tmplt.js
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\install.rdf
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\META-INF\manifest.mf
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\META-INF\zigbert.rsa
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\META-INF\zigbert.sf
  • %Cookies%\{User name}@reports[1].txt
  • %User Temp%\nsaC.tmp\Time.dll 11KB A 5/20/2013 7:35:44 PM
  • %User Temp%\nst8.tmp\Time.dll 11KB A 5/20/2013 7:35:43 PM
  • %User Temp%\nswE.tmp\Time.dll 11KB A 5/20/2013 7:35:44 PM
  • %Program Files%\Delta\delta\1.8.16.16\bh\delta.dll
  • %Program Files%\Delta\delta\1.8.16.16\deltaApp.dll
  • %Program Files%\Delta\delta\1.8.16.16\deltaEng.dll
  • %Program Files%\Delta\delta\1.8.16.16\deltasrv.exe
  • %Program Files%\Delta\delta\1.8.16.16\deltaTlbr.dll
  • %Program Files%\Delta\delta\1.8.16.16\escortShld.dll
  • %Program Files%\Delta\delta\1.8.16.16\uninstall.exe

Crea las carpetas siguientes:

  • %Application Data%\Delta
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\searchplugins
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\chrome.manifest 1KB A 11/2/2012 6:37:20 AM
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\components 1KB D 1/1/1601 8:00:00 AM
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\content\imgs\flgs
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions\ffxtlbr@delta.com\META-INF
  • %User Temp%\mt_ffx
  • %User Temp%\mt_ffx\Delta
  • %User Temp%\mt_ffx\Delta\delta
  • %User Temp%\mt_ffx\Delta\delta\1.8.16.16
  • %Program Files%\Delta
  • %Program Files%\Delta\delta
  • %Program Files%\Delta\delta\1.8.16.16
  • %Program Files%\Delta\delta\1.8.16.16\bh

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\{GUID}

Agrega las siguientes entradas de registro para permitir su propia instalación como objeto de ayuda del explorador (BHO):

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{GUID}
{Default} = "delta Helper Object"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{GUID}
NoExplorer = "1"

Otras modificaciones del sistema

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

HKEY_CLASSES_ROOT\AppID\{GUID}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\{GUID}

HKEY_CURRENT_USER\Software\Delta

HKEY_CURRENT_USER\Software\Delta\
delta

HKEY_LOCAL_MACHINE\SOFTWARE\Delta

HKEY_LOCAL_MACHINE\SOFTWARE\Delta\
delta

HKEY_LOCAL_MACHINE\SOFTWARE\Delta\
delta\Instl

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{GUID}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
delta

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

HKEY_CURRENT_USER\Software\Delta\
delta
tlbrSrchUrl = ""

HKEY_CURRENT_USER\Software\Delta\
delta
lastB = "about:blank"

HKEY_LOCAL_MACHINE\SOFTWARE\Delta\
delta\Instl
InstallDir = "%Program Files%\Delta\delta\1.8.16.16"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{GUID}
Policy = "3"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{GUID}
AppName = "deltasrv.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{GUID}
AppPath = "%Program Files%\Delta\delta\1.8.16.16"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Toolbar
{GUID} = "Delta Toolbar"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
delta
DisplayName = "Delta toolbar "

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
delta
UninstallString = ""%Program Files%\Delta\delta\1.8.16.16\uninstall.exe""

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
delta
DisplayIcon = ""%Program Files%\Delta\delta\1.8.16.16\deltasrv.exe""

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
delta
DisplayVersion = "1.8.16.16"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
delta
Comments = "Delta toolbar "

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
delta
Publisher = "Delta"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
delta
NoModify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
delta
NoRepair = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
delta
EstimatedSize = "9c4"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Control\Session Manager
PendingFileRenameOperations = "\??\%User Temp%\nswE.tmp\Time.dll"

  SOLUTION

Minimum scan engine: 9.300
SSAPI Pattern-Datei: 1.401.00
SSAPI Pattern veröffentlicht am: 21 de maja de 2013

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

Cierre todas las ventanas abiertas del explorador.

Step 4

Quitar ADW_DELTA por medio de su propia opción de desinstalación

[ learnMore ]
Para desinstalar el proceso de grayware

Step 5

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\AppID
    • {GUID}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID
    • {GUID}

Step 7

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.
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\user.js
  • %Cookies%\{User name}@reports[2].txt
  • %User Temp%\nsaC.tmp\Time.dll
  • %User Temp%\nst8.tmp\Time.dll
  • %User Temp%\nswE.tmp\Time.dll
  • %User Temp%\~nsu.tmp\Au_.exe
 DATA_GENERIC_FILENAME_1
  • En la lista desplegable Buscar en, seleccione Mi PC y pulse Intro.
  • Una vez haya encontrado el archivo, selecciónelo y, a continuación, pulse MAYÚS+SUPR para eliminarlo definitivamente.
  • Repita los pasos 2 a 4 con el resto de archivos:
      • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\user.js
      • %Cookies%\{User name}@reports[2].txt
      • %User Temp%\nsaC.tmp\Time.dll
      • %User Temp%\nst8.tmp\Time.dll
      • %User Temp%\nswE.tmp\Time.dll
      • %User Temp%\~nsu.tmp\Au_.exe

    • Step 8

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