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Win32.HLLW.Autoruner1.53513

Added to the Dr.Web virus database: 2013-08-09

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'MSN Messengger' = '<SYSTEM32>\MsRun32.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe MsRun32.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\MsRun32.exe
  • <Drive name for removable media>:\True_Love.exe
Malicious functions:
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)
Terminates or attempts to terminate
the following system processes:
  • <SYSTEM32>\cmd.exe
Modifies settings of Windows Explorer:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NofolderOptions' = '00000001'
Modifies file system :
Creates the following files:
  • <SYSTEM32>\autorun.ini
  • %WINDIR%\MsRun32.exe
  • <SYSTEM32>\MsRun32.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\autorun.inf
  • <SYSTEM32>\autorun.ini
  • <SYSTEM32>\MsRun32.exe
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'