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Win32.HLLW.Autoruner2.16181

Added to the Dr.Web virus database: 2014-07-17

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '05cb4721099d6382dc92447938993aed' = '"%TEMP%\system.exe" ..'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '05cb4721099d6382dc92447938993aed' = '"%TEMP%\system.exe" ..'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\05cb4721099d6382dc92447938993aed.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\system.exe' = '%TEMP%\system.exe:*:Enabled:system.exe'
Creates and executes the following:
  • '%TEMP%\system.exe'
  • '%HOMEPATH%\Local Settings\Tempserver.exe'
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\system.exe" "system.exe" ENABLE
Modifies file system :
Creates the following files:
  • %TEMP%\system.exe
  • %HOMEPATH%\Local Settings\Tempserver.exe
Network activity:
Connects to:
  • 'lo##.#ro.linkpc.net':5552
UDP:
  • DNS ASK lo##.#ro.linkpc.net
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'
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