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Win32.HLLW.Autoruner1.30217

Added to the Dr.Web virus database: 2012-11-24

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates the following files on removable media:
  • <Drive name for removable media>:\ffsdjk.exe
  • <Drive name for removable media>:\autorun.inf
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '<Full path to virus>:*:Enabled:ipsec'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
blocks the following features:
  • User Account Control (UAC)
  • Windows Security Center
Injects code into
the following system processes:
  • <Auxiliary element>
a large number of user processes.
Modifies file system :
Creates the following files:
  • <DRIVERS>\hnnjk.sys
  • %TEMP%\uvpnom.exe
  • %TEMP%\winomst.exe
  • C:\gnfjf.pif
  • %TEMP%\tmp.ini
  • %TEMP%\duwo.exe
  • C:\autorun.inf
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\ffsdjk.exe
  • C:\autorun.inf
  • C:\gnfjf.pif
Deletes the following files:
  • %TEMP%\uvpnom.exe
  • %TEMP%\winomst.exe
  • %TEMP%\duwo.exe
  • <DRIVERS>\hnnjk.sys
Network activity:
Connects to:
  • 'www.ca###rdesk.org':80
  • 'al###wry.org':80
TCP:
HTTP GET requests:
  • www.ca###rdesk.org/images/xs.jpg?6d###########
  • al###wry.org/images/xs.jpg?65##########
UDP:
  • DNS ASK www.ca###rdesk.org
  • DNS ASK al###wry.org
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''