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Profil

Win32.HLLW.Autoruner.51940

Added to the Dr.Web virus database: 2011-06-17

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Terminal Server\Install\Software\Microsoft\Windows\CurrentVersion\Run] 'Windows Services' = 'BlaBhs.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Windows Services' = 'BlaBhs.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\RECYCLER\S-1-6-21-2434476501-1644491937-600003330-1213\usb_driver.com
  • <Drive name for removable media>:\RECYCLER\S-1-6-21-2434476501-1644491937-600003330-1213\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:Windows Services'
Creates and executes the following:
  • %WINDIR%\BlaBhs.exe 
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
Modifies file system :
Creates the following files:
  • %WINDIR%\BlaBhs.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\RECYCLER\S-1-6-21-2434476501-1644491937-600003330-1213\usb_driver.com
  • %WINDIR%\BlaBhs.exe
Network activity:
Connects to:
  • '1.###priz.tk':6667
UDP:
  • DNS ASK 1.###priz.tk
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''

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