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Win32.HLLW.Autoruner.56740

Added to the Dr.Web virus database: 2011-08-21

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates the following files on removable media:
  • <Drive name for removable media>:\Autorun.inf
  • <Drive name for removable media>:\SYSTEM.EXE
Malicious functions:
Creates and executes the following:
  • %APPDATA%\lsass.exe 
Modifies file system :
Creates the following files:
  • %APPDATA%\lsass.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\Autorun.inf
  • <Drive name for removable media>:\SYSTEM.EXE
  • %APPDATA%\lsass.exe
Deletes itself.
Network activity:
Connects to:
  • 'xr.##ruhere.net':3175
UDP:
  • DNS ASK xr.##ruhere.net
Miscellaneous:
Searches for the following windows:
  • ClassName: '' WindowName: 'HB'