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Win32.HLLW.Autoruner1.12052

Aggiunto al database dei virus Dr.Web: 2012-02-15

La descrizione è stata aggiunta:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Active Setup\Installed Components\{77DDEFF8-EEDC-B6A2-B2BE-FFC2A4FEC8BA}] 'StubPath' = '%APPDATA%\sysfan.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{77DDEFF8-EEDC-B6A2-B2BE-FFC2A4FEC8BA}] 'StubPath' = '%APPDATA%\sysfan.exe'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\sysfan.exe' = '%APPDATA%\sysfan.exe:*:Enabled:Windows Messanger'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '<Full path to virus>:*:Enabled:Windows Messanger'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
Executes the following:
  • <SYSTEM32>\reg.exe ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\sysfan.exe" /t REG_SZ /d "%APPDATA%\sysfan.exe:*:Enabled:Windows Messanger" /f
  • <SYSTEM32>\reg.exe ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "<Full path to virus>" /t REG_SZ /d "<Full path to virus>:*:Enabled:Windows Messanger" /f
  • <SYSTEM32>\reg.exe ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
Modifies file system :
Creates the following files:
  • %APPDATA%\data.dat
  • %APPDATA%\sysfan.exe
Network activity:
Connects to:
  • 'ma####20.no-ip.info':1945
UDP:
  • DNS ASK ma####20.no-ip.info
  • '<Private IP address>':1036