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Profil

Win32.HLLW.Autoruner2.4277

Added to the Dr.Web virus database: 2014-01-31

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'c5a545b982db5adedb00abee07903182' = '"%HOMEPATH%\mjklllkllkkkkkklo.exe" ..'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'c5a545b982db5adedb00abee07903182' = '"%HOMEPATH%\mjklllkllkkkkkklo.exe" ..'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\c5a545b982db5adedb00abee07903182.exe
Creates the following files on removable media:
  • <Drive name for removable media>:\c5a545b982db5adedb00abee07903182.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%HOMEPATH%\mjklllkllkkkkkklo.exe' = '%HOMEPATH%\mjklllkllkkkkkklo.exe:*:Enabled:mjklllkllkkkkkklo.exe'
Creates and executes the following:
  • '%HOMEPATH%\mjklllkllkkkkkklo.exe'
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%HOMEPATH%\mjklllkllkkkkkklo.exe" "mjklllkllkkkkkklo.exe" ENABLE
Modifies file system :
Creates the following files:
  • %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new
  • %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new
  • %HOMEPATH%\mjklllkllkkkkkklo.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\c5a545b982db5adedb00abee07903182.exe
Moves the following files:
  • from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch
  • from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch
Network activity:
Connects to:
  • '69####7.no-ip.biz':1177
UDP:
  • DNS ASK 69####7.no-ip.biz
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'