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Win32.HLLW.Autoruner2.6115

Added to the Dr.Web virus database: 2014-02-08

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'e53ac6073755138c5a76c6b1414e880a' = '"%APPDATA%\fire fox update.exe" ..'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'e53ac6073755138c5a76c6b1414e880a' = '"%APPDATA%\fire fox update.exe" ..'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\e53ac6073755138c5a76c6b1414e880a.exe
Creates the following files on removable media:
  • <Drive name for removable media>:\e53ac6073755138c5a76c6b1414e880a.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\fire fox update.exe' = '%APPDATA%\fire fox update.exe:*:Enabled:fire fox update.exe'
Creates and executes the following:
  • '%APPDATA%\fire fox update.exe'
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%APPDATA%\fire fox update.exe" "fire fox update.exe" ENABLE
Searches for windows to
detect analytical utilities:
  • ClassName: '(null)' WindowName: 'Process Monitor - Sysinternals: www.sysinternals.com'
  • ClassName: 'PROCMON_WINDOW_CLASS' WindowName: '(null)'
  • ClassName: '(null)' WindowName: 'Registry Monitor - Sysinternals: www.sysinternals.com'
  • ClassName: 'RegmonClass' WindowName: '(null)'
  • ClassName: '(null)' WindowName: 'File Monitor - Sysinternals: www.sysinternals.com'
  • ClassName: 'GBDYLLO' WindowName: '(null)'
  • ClassName: 'OLLYDBG' WindowName: '(null)'
  • ClassName: 'FilemonClass' WindowName: '(null)'
  • ClassName: 'pediy06' WindowName: '(null)'
Modifies file system :
Creates the following files:
  • %APPDATA%\fire fox update.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\e53ac6073755138c5a76c6b1414e880a.exe
Network activity:
Connects to:
  • 'yh###.no-ip.org':25
UDP:
  • DNS ASK yh###.no-ip.org
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'
  • ClassName: '18467-41' WindowName: '(null)'