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Win32.HLLW.Autoruner2.15743

Added to the Dr.Web virus database: 2014-06-22

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '518e44e67b3b3b0ff83ce8bad05d2832' = '"%TEMP%\server.exe" ..'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '518e44e67b3b3b0ff83ce8bad05d2832' = '"%TEMP%\server.exe" ..'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Chrome' = '<Full path to virus>'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Chrome' = '%TEMP%\server.exe'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\518e44e67b3b3b0ff83ce8bad05d2832.exe
  • %HOMEPATH%\Start Menu\Programs\Startup\Chrome.exe
Creates the following files on removable media:
  • <Drive name for removable media>:\Chrome.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\server.exe' = '%TEMP%\server.exe:*:Enabled:server.exe'
Creates and executes the following:
  • '%TEMP%\server.exe'
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\server.exe" "server.exe" ENABLE
Modifies file system :
Creates the following files:
  • %TEMP%\server.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\Chrome.exe
Network activity:
Connects to:
  • 'al###.no-ip.org':1177
UDP:
  • DNS ASK al###.no-ip.org
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'