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Win32.HLLW.Autoruner1.4180

Added to the Dr.Web virus database: 2011-11-20

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Microsoft Windows System' = '%HOMEPATH%\P-7-78-8964-9648-3874\wincrs.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\wincsa.exe
  • <Drive name for removable media>:\autorun.inf
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%HOMEPATH%\P-7-78-8964-9648-3874\wincrs.exe' = '%HOMEPATH%\P-7-78-8964-9648-3874\wincrs.exe:*:Enabled:Microsoft Windows System'
Creates and executes the following:
  • %HOMEPATH%\P-7-78-8964-9648-3874\wincrs.exe 
Modifies file system :
Creates the following files:
  • %HOMEPATH%\P-7-78-8964-9648-3874\wincrs.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\wincsa.exe
  • %HOMEPATH%\P-7-78-8964-9648-3874\wincrs.exe
Network activity:
Connects to:
  • 'ph#.##afficnum.net':2345
UDP:
  • DNS ASK ph#.##afficnum.net
  • '<Private IP address>':1037
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''