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Win32.HLLW.Autoruner2.8408

Added to the Dr.Web virus database: 2014-02-20

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'a474c6d2b75d64b3ed1078b377b83c48' = '"%WINDIR%\svchost.exe" ..'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'a474c6d2b75d64b3ed1078b377b83c48' = '"%WINDIR%\svchost.exe" ..'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%WINDIR%\svchost.exe' = '%WINDIR%\svchost.exe:*:Enabled:svchost.exe'
Creates and executes the following:
  • '%WINDIR%\svchost.exe'
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%WINDIR%\svchost.exe" "svchost.exe" ENABLE
Modifies file system :
Creates the following files:
  • %WINDIR%\svchost.exe
Network activity:
Connects to:
  • 'da####234.no-ip.biz':1177
UDP:
  • DNS ASK da####234.no-ip.biz
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: '(null)'
  • ClassName: 'Indicator' WindowName: '(null)'