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Win32.HLLW.Autoruner2.823

Added to the Dr.Web virus database: 2013-12-29

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'e0ab7390c5211b44dbbbea61bcfe55b3' = '"%WINDIR%\systemsys.exe" ..'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'e0ab7390c5211b44dbbbea61bcfe55b3' = '"%WINDIR%\systemsys.exe" ..'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\e0ab7390c5211b44dbbbea61bcfe55b3.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%WINDIR%\systemsys.exe' = '%WINDIR%\systemsys.exe:*:Enabled:systemsys.exe'
Creates and executes the following:
  • '%WINDIR%\systemsys.exe'
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%WINDIR%\systemsys.exe" "systemsys.exe" ENABLE
Modifies file system :
Creates the following files:
  • %WINDIR%\systemsys.exe
Network activity:
Connects to:
  • 'an#####2013.no-ip.biz':1177
UDP:
  • DNS ASK an#####2013.no-ip.biz
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'