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Win32.HLLW.Autoruner2.36152

Added to the Dr.Web virus database: 2018-04-14

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'd1c3083e2d98c21be589bd106c47ff9e' = '"<Full path to file>" ..'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'd1c3083e2d98c21be589bd106c47ff9e' = '"<Full path to file>" ..'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\d1c3083e2d98c21be589bd106c47ff9e.exe
Creates the following files on removable media:
  • <Drive name for removable media>:\d1c3083e2d98c21be589bd106c47ff9e.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] '<Full path to file>' = '<Full path to file>:*:Enabled:<File name>.exe'
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "<Full path to file>" "<File name>.exe" ENABLE
Modifies file system:
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\d1c3083e2d98c21be589bd106c47ff9e.exe
  • <Drive name for removable media>:\autorun.inf
  • <Full path to file>
  • %HOMEPATH%\Start Menu\Programs\Startup\d1c3083e2d98c21be589bd106c47ff9e.exe
Network activity:
Connects to:
  • 'ka####12.ddns.net':1111
  • 'localhost':1111
UDP:
  • DNS ASK ka####12.ddns.net
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