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Win32.HLLW.Autoruner2.3791

Added to the Dr.Web virus database: 2014-01-30

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '60f0d0e0d2dd518d7530a18795742b3f' = '"%TEMP%\system32.exe" ..'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '60f0d0e0d2dd518d7530a18795742b3f' = '"%TEMP%\system32.exe" ..'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\60f0d0e0d2dd518d7530a18795742b3f.exe
Creates the following files on removable media:
  • <Drive name for removable media>:\60f0d0e0d2dd518d7530a18795742b3f.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\system32.exe' = '%TEMP%\system32.exe:*:Enabled:system32.exe'
Creates and executes the following:
  • '%TEMP%\system32.exe'
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\system32.exe" "system32.exe" ENABLE
Modifies file system :
Creates the following files:
  • %TEMP%\system32.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\60f0d0e0d2dd518d7530a18795742b3f.exe
Network activity:
Connects to:
  • 'ka####0.no-ip.biz':1177
UDP:
  • DNS ASK ka####0.no-ip.biz
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'