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Win32.HLLW.Autoruner1.13436

Added to the Dr.Web virus database: 2012-09-18

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Terminal Server\Install\Software\Microsoft\Windows\CurrentVersion\Run] 'Cftmon32' = '%APPDATA%\afd.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Cftmon32' = '%APPDATA%\afd.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\Folder\SubFolder\file.exe
  • <Drive name for removable media>:\Folder\SubFolder\Desktop.ini
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 virus>' = '<Full path to virus>:*:Enabled:Cftmon32'
Creates and executes the following:
  • %APPDATA%\afd.exe
Executes the following:
  • <SYSTEM32>\netsh.exe firewall add allowedprogram 1.exe 1 ENABLE
Searches for windows to
detect programs and games:
  • ClassName: 'MSNHiddenWindowClass' WindowName: ''
  • ClassName: '_Oscar_StatusNotify' WindowName: ''
Modifies file system :
Creates the following files:
  • %APPDATA%\afd.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\Folder\SubFolder\file.exe
  • %APPDATA%\afd.exe
Network activity:
Connects to:
  • 'on#.#fvkebt.com':22
UDP:
  • DNS ASK on#.#fvkebt.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'TskMultiChatForm.UnicodeClass' WindowName: ''
  • ClassName: 'Message Session' WindowName: ''
  • ClassName: 'Indicator' WindowName: ''
  • ClassName: '__oxFrame.class__' WindowName: ''

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