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Win32.HLLW.Autoruner2.1338

Added to the Dr.Web virus database: 2013-12-30

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'f9be75c5023d5e25b0bbaa6b68899d2b' = '"%TEMP%\firefox.exe" ..'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'f9be75c5023d5e25b0bbaa6b68899d2b' = '"%TEMP%\firefox.exe" ..'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\f9be75c5023d5e25b0bbaa6b68899d2b.exe
Creates the following files on removable media:
  • <Drive name for removable media>:\! My Picutre.SCR
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\firefox.exe' = '%TEMP%\firefox.exe:*:Enabled:firefox.exe'
Creates and executes the following:
  • '%TEMP%\firefox.exe'
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\firefox.exe" "firefox.exe" ENABLE
Modifies file system :
Creates the following files:
  • C:\! My Picutre.SCR
  • %TEMP%\firefox.exe
Network activity:
Connects to:
  • 'ro####.hopto.org':1177
UDP:
  • DNS ASK ro####.hopto.org
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'