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Win32.HLLW.Autoruner2.6431

Added to the Dr.Web virus database: 2014-02-09

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '82ab2be8042577ffbbebde9bcdd1e628' = '"%WINDIR%\register.exe" ..'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '82ab2be8042577ffbbebde9bcdd1e628' = '"%WINDIR%\register.exe" ..'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\82ab2be8042577ffbbebde9bcdd1e628.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%WINDIR%\register.exe' = '%WINDIR%\register.exe:*:Enabled:register.exe'
Creates and executes the following:
  • '%WINDIR%\register.exe'
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%WINDIR%\register.exe" "register.exe" ENABLE
Modifies file system :
Creates the following files:
  • %WINDIR%\register.exe
Network activity:
Connects to:
  • 'wa####121.no-ip.biz':5552
UDP:
  • DNS ASK wa####121.no-ip.biz
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'