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Win32.HLLW.Autoruner.58982

Added to the Dr.Web virus database: 2011-09-15

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'xxx' = '%WINDIR%\xxx.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe <SYSTEM32>\worm.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\xxx\SoundaraRajan\xxx.exe
  • <Drive name for removable media>:\xxx.exe
  • <Drive name for removable media>:\xxx33.exe
  • <Drive name for removable media>:\xxx33\worm.exe
  • <Drive name for removable media>:\xxx\xxx.exe
  • <Drive name for removable media>:\autorun.inf
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
  • file extensions
Creates and executes the following:
  • <SYSTEM32>\worm.exe 
  • %WINDIR%\xxx.exe 
Modifies file system :
Creates the following files:
  • <Current directory>\.exe
  • %WINDIR%\xxx.exe
  • <SYSTEM32>\worm.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\xxx33\worm.exe
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\xxx\SoundaraRajan\xxx.exe
  • %WINDIR%\xxx.exe
  • <SYSTEM32>\worm.exe
  • <Drive name for removable media>:\xxx\xxx.exe
Deletes the following files:
  • <Drive name for removable media>:\autorun.inf
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''