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Win32.HLLW.Autoruner2.18422

Added to the Dr.Web virus database: 2014-11-25

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '2df76a3aa194b8595c8a28a2d7ec71d0' = '"%TEMP%\none.exe" ..'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '2df76a3aa194b8595c8a28a2d7ec71d0' = '"%TEMP%\none.exe" ..'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\none.exe' = '%TEMP%\none.exe:*:Enabled:none.exe'
Creates and executes the following:
  • '%TEMP%\none.exe'
  • '<LS_APPDATA>sQuQIWgDlG.exe'
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\none.exe" "none.exe" ENABLE
  • '<SYSTEM32>\rundll32.exe' <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen <LS_APPDATA>UrjqRLLBAD.jpg
Modifies file system :
Creates the following files:
  • %TEMP%\none.exe
  • %HOMEPATH%\Recent\Application DataUrjqRLLBAD.lnk
  • %HOMEPATH%\Recent\Local Settings.lnk
  • %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new
  • <LS_APPDATA>sQuQIWgDlG.exe
  • <LS_APPDATA>UrjqRLLBAD.jpg
  • %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new
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:
  • 'ba###.no-ip.org':1177
UDP:
  • DNS ASK ba###.no-ip.org
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'ShImgVw:CPreviewWnd' WindowName: ''