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Win32.HLLW.Autoruner2.14325

Added to the Dr.Web virus database: 2014-05-12

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '87dfa5e096c998a38eb30f99a2815919' = '"%TEMP%\F.exe" ..'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '87dfa5e096c998a38eb30f99a2815919' = '"%TEMP%\F.exe" ..'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\87dfa5e096c998a38eb30f99a2815919.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\F.exe' = '%TEMP%\F.exe:*:Enabled:F.exe'
Creates and executes the following:
  • '%TEMP%\F.exe'
  • '<SYSTEM32>\F.exe'
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\F.exe" "F.exe" ENABLE
  • '<SYSTEM32>\rundll32.exe' <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen <SYSTEM32>\Cute-Baby-Pictures-53.jpg
Modifies file system :
Creates the following files:
  • %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new
  • %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new
  • %HOMEPATH%\Recent\system32.lnk
  • %HOMEPATH%\Recent\Cute-Baby-Pictures-53.lnk
  • <SYSTEM32>\F.exe
  • <SYSTEM32>\Cute-Baby-Pictures-53.jpg
  • %TEMP%\F.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:
  • 'lo####ro.no-ip.biz':1177
UDP:
  • DNS ASK lo####ro.no-ip.biz
Miscellaneous:
Searches for the following windows:
  • ClassName: 'ShImgVw:CPreviewWnd' WindowName: '(null)'
  • ClassName: 'Indicator' WindowName: '(null)'
  • ClassName: 'EDIT' WindowName: '(null)'
  • ClassName: 'Shell_TrayWnd' WindowName: '(null)'

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