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Win32.HLLW.Autoruner.51833

Added to the Dr.Web virus database: 2011-06-16

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\] 'Critical Core' = '%APPDATA%\winlogon.exe'
  • [<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\] 'Critical Core' = '%APPDATA%\winlogon.exe'
Creates the following files on removable media
  • <Drive name for removable media>:\dfgdfjjjjdfjdfjgfdjturturutjjf\dfg-2352-26235-2322322-624621221-2622255\desktop.ini
  • <Drive name for removable media>:\dfgdfjjjjdfjdfjgfdjturturutjjf\dfg-2352-26235-2322322-624621221-2622255\explorer.exe
  • <Drive name for removable media>:\autorun.inf
Malicious functions
Injects code into
the following user processes:
  • syshost.exe
Modifies file system
Creates the following files
  • %PROGRAMDATA%\syshost.exe
  • %APPDATA%\winlogon.exe
Sets the 'hidden' attribute to the following files
  • %APPDATA%\winlogon.exe
  • <Drive name for removable media>:\dfgdfjjjjdfjdfjgfdjturturutjjf\dfg-2352-26235-2322322-624621221-2622255\explorer.exe
Network activity
UDP
  • DNS ASK ir######r.taylor412gang.com
Miscellaneous
Creates and executes the following
  • '%PROGRAMDATA%\syshost.exe'

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