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Win32.HLLW.Randex.45057

Added to the Dr.Web virus database: 2015-12-17

Virus description added:

Technical Information

Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
Executes the following:
  • '<SYSTEM32>\net1.exe' stop security center
  • '<SYSTEM32>\net1.exe' stop WinDefend
  • '<SYSTEM32>\net.exe' stop WinDefend
  • '<SYSTEM32>\netsh.exe' firewall set opmode disable
  • '<SYSTEM32>\net.exe' stop security center
Searches for windows to
detect analytical utilities:
  • ClassName: 'RegMonClass' WindowName: ''
  • ClassName: 'FileMonClass' WindowName: ''
Modifies file system :
Creates the following files:
  • %TEMP%\~DF7211.tmp
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''
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