Adware.Win32.CnsMin.B
Adware/Agent (FORTINET); a variant of Win32/CnsMin.AD potentially unwanted application (NOD32)
Windows
Threat Type:
Adware
Destructiveness:
No
Encrypted:
No
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.
TECHNICAL DETAILS
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.
Instalación
Infiltra los archivos siguientes:
- {Malware file path}\jword.ico
- {Malware file path}\jwordhot.ico
- %Common Programs%\Japanese keywords\Japanese Keyword Setting.url
- %Common Programs%\Japanese keywords\About Japanese Keyword.url
- %Common Programs%\Japanese keywords\Uninstall.lnk
Técnica de inicio automático
Agrega las siguientes entradas de registro para permitir su ejecución automática cada vez que se inicia el sistema:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
CnsMin = Rundll32.exe {Malware file path and name},Rundll32
Otras modificaciones del sistema
Agrega las siguientes entradas de registro:
HKEY_CURRENT_USER\Software\{Random number}\
CnsMin
Message = 1
HKEY_CURRENT_USER\Software\{Random number}\
CnsMin
LastActive = {Random numbers}
HKEY_CURRENT_USER\Software\{Random number}\
CnsMin
AddProgram = 1
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
CNSReset = {Random numbers}
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
CNSEnable = 1
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
CNSHint = 1
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
CNSList = 1
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
CNSMenu = {Random numbers}
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
CNSAutoUpdate = 1
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Use Custom Search URL = 0
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Search
CustomizeSearch = http://search.{BLOCKED}d.jp/jwd_sb_srchcust.htm?ielang={Random characters}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Search
SearchAssistant = http://search.{BLOCKED}d.jp/jwd_sb_srchasst.htm?ielang={Random characters}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Extensions\{Random characters}
CLSID = {Random characters}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Extensions\{Random characters}
ButtonText = Japanese Keywords Homepage
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Extensions\{Random characters}
HotIcon = {Malware file path}\jwordhot.ico
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Extensions\{Random characters}
Icon = {Malware file path}\jword.ico
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Extensions\{Random characters}
DefaultVisible = yes
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Extensions\{Random characters}
Exec = http://www.{BLOCKED}d.jp/intro/?partner=AP&type=lk&frm=iebutton
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS
Type = group
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS
Text = Japanese keywords
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS
PlugUIText = @{Malware file path and name},-117
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS
Bitmap = {Malware file path and name},1000
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Enable
Type = checkbox
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Enable
HKeyRoot = {Random number}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Enable
RegPath = SOFTWARE\Microsoft\Internet Explorer\Main
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Enable
ValueName = CNSEnable
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Enable
DefaultValue = 1
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Enable
CheckedValue = 1
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Enable
UncheckedValue = {Random number}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Enable
Text = Enable japanese keywords
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Enable
PlugUIText = @{Malware file path and name},-115
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Hint
Type = checkbox
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Hint
HKeyRoot = {Random number}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Hint
RegPath = SOFTWARE\Microsoft\Internet Explorer\Main
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Hint
ValueName = CNSHint
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Hint
DefaultValue = 1
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Hint
CheckedValue = 1
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Hint
UncheckedValue = {Random number}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Hint
Text = Show hint at address bar
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Hint
PlugUIText = @{Malware file path and name},-116
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Menu
Type = checkbox
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Menu
HKeyRoot = {Random number}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Menu
RegPath = SOFTWARE\Microsoft\Internet Explorer\Main
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Menu
ValueName = CNSMenu
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Menu
DefaultValue = {Random number}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Menu
CheckedValue = 1
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Menu
UncheckedValue = {Random number}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Menu
Text = Add "visit japanese keywords" in context menu ( need restart IE )
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Menu
PlugUIText = @{Malware file path and name},-502
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
AutoUpdate
Type = checkbox
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
AutoUpdate
HKeyRoot = {Random number}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
AutoUpdate
RegPath = SOFTWARE\Microsoft\Internet Explorer\Main
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
AutoUpdate
ValueName = CNSAutoUpdate
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
AutoUpdate
DefaultValue = 1
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
AutoUpdate
CheckedValue = 1
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
AutoUpdate
UncheckedValue = {Random number}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
AutoUpdate
Text = Auto upgrade without notification
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
AutoUpdate
PlugUIText = @{Malware file path and name},-512
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CnsHelper.CH.1
= JWord
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CnsHelper.CH.1\CLSID
= {Random characters}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CnsHelper.CH
= JWord
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CnsHelper.CH\CLSID
= {Random characters}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CnsHelper.CH\CurVer
= CnsHelper.CH.1
Otros detalles
Agrega las siguientes entradas de registro como parte de la rutina de instalación:
HKEY_LOCAL_MACHINE\SOFTWARE\{Random number}
HKEY_LOCAL_MACHINE\SOFTWARE\{Random number}\
CnsMin
HKEY_CURRENT_USER\Software\{Random number}
HKEY_CURRENT_USER\Software\{Random number}\
CnsMin
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CnsMin
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Enable
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Hint
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
Menu
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\AdvancedOptions\!CNS\
AutoUpdate
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CnsHelper.CH.1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CnsHelper.CH.1\CLSID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CnsHelper.CH
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CnsHelper.CH\CLSID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CnsHelper.CH\CurVer
It connects to the following possibly malicious URL:
- www.{BLOCKED}d.jp
- support.{BLOCKED}t.jp
- search.{BLOCKED}d.jp
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
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Reiniciar en modo seguro
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\Internet Explorer\Main
- CNSReset = {Random numbers}
- CNSReset = {Random numbers}
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
- CNSEnable = 1
- CNSEnable = 1
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
- CNSHint = 1
- CNSHint = 1
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
- CNSList = 1
- CNSList = 1
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
- CNSMenu = {Random numbers}
- CNSMenu = {Random numbers}
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
- CNSAutoUpdate = 1
- CNSAutoUpdate = 1
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
- Use Custom Search URL = 0
- Use Custom Search URL = 0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Search
- CustomizeSearch = http://search.{BLOCKED}d.jp/jwd_sb_srchcust.htm?ielang={Random characters}
- CustomizeSearch = http://search.{BLOCKED}d.jp/jwd_sb_srchcust.htm?ielang={Random characters}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Search
- SearchAssistant = http://search.{BLOCKED}d.jp/jwd_sb_srchasst.htm?ielang={Random characters}
- SearchAssistant = http://search.{BLOCKED}d.jp/jwd_sb_srchasst.htm?ielang={Random characters}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions\{Random characters}
- CLSID = {Random characters}
- CLSID = {Random characters}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions\{Random characters}
- ButtonText = Japanese Keywords Homepage
- ButtonText = Japanese Keywords Homepage
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions\{Random characters}
- HotIcon = {Malware file path}\jwordhot.ico
- HotIcon = {Malware file path}\jwordhot.ico
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions\{Random characters}
- Icon = {Malware file path}\jword.ico
- Icon = {Malware file path}\jword.ico
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions\{Random characters}
- DefaultVisible = yes
- DefaultVisible = yes
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions\{Random characters}
- Exec = http://www.{BLOCKED}d.jp/intro/?partner=AP&type=lk&frm=iebutton
- Exec = http://www.{BLOCKED}d.jp/intro/?partner=AP&type=lk&frm=iebutton
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- CnsMin = Rundll32.exe {Malware file path and name},Rundll32
- CnsMin = Rundll32.exe {Malware file path and name},Rundll32
Step 5
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_LOCAL_MACHINE\SOFTWARE
- {Random number}
- {Random number}
- In HKEY_CURRENT_USER\Software
- {Random number}
- {Random number}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
- CnsMin
- CnsMin
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\AdvancedOptions
- !CNS
- !CNS
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
- CnsHelper.CH.1
- CnsHelper.CH.1
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
- CnsHelper.CH
- CnsHelper.CH
Step 6
Buscar y eliminar este archivo
- {Malware file path}\jword.ico
- {Malware file path}\jwordhot.ico
- %Common Programs%\Japanese keywords\Japanese Keyword Setting.url
- %Common Programs%\Japanese keywords\About Japanese Keyword.url
- %Common Programs%\Japanese keywords\Uninstall.lnk
Step 7
Reinicie en modo normal y explore el equipo con su producto de Trend Micro para buscar los archivos identificados como Adware.Win32.CnsMin.B 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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