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Profil

Win32.HLLW.Autoruner1.23942

Added to the Dr.Web virus database: 2012-07-27

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates the following files on removable media:
  • <Drive name for removable media>:\acik.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 execution of the following system utilities:
  • Windows Task Manager (Taskmgr)
  • Registry Editor (RegEdit)
blocks the following features:
  • User Account Control (UAC)
  • Windows Security Center
Injects code into
the following system processes:
  • <SYSTEM32>\cscript.exe
a large number of user processes.
Modifies file system :
Creates the following files:
  • C:\mroi.exe
  • C:\autorun.inf
  • %TEMP%\winvkuj.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\acik.exe
  • C:\autorun.inf
  • C:\mroi.exe
Deletes the following files:
  • %TEMP%\winvkuj.exe
Miscellaneous:
Searches for the following windows:
  • ClassName: '' WindowName: ''