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Win32.HLLW.Autoruner1.13617

Added to the Dr.Web virus database: 2012-03-18

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Java TM runtime VM' = '%APPDATA%\System\jrc.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\Updater.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\System\jrc.exe' = '%APPDATA%\System\jrc.exe:*:Enabled:Windows Messanger'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
Creates and executes the following:
  • %APPDATA%\System\jrc.exe
Executes the following:
  • <SYSTEM32>\netsh.exe firewall set opmode disable
  • <SYSTEM32>\reg.exe ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\System\jrc.exe" /t REG_SZ /d "%APPDATA%\System\jrc.exe:*: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%\System\jrc.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\Updater.exe
Network activity:
Connects to:
  • '46.##.99.250':2501
  • 'th####atebay.org':80
  • 'wp#d':80
TCP:
HTTP GET requests:
  • th####atebay.org/top/301
  • wp#d/wpad.dat
UDP:
  • DNS ASK th####atebay.org
  • DNS ASK www.google.com
  • DNS ASK wp#d
  • '<Private IP address>':1037