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Win32.HLLW.Autoruner1.16289

Added to the Dr.Web virus database: 2012-05-21

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /i'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /k'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /v'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /p'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /n'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /h'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /b'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /x'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /y'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /r'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /a'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /e'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /m'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /c'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /t'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /w'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /u'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /z'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'mieot' = '%HOMEPATH%\mieot.exe /q'
Creates the following files on removable media:
  • <Drive name for removable media>:\Passwords.exe
  • <Drive name for removable media>:\RCX3.tmp
  • <Drive name for removable media>:\RCX2.tmp
  • <Drive name for removable media>:\RCX6.tmp
  • <Drive name for removable media>:\RCX5.tmp
  • <Drive name for removable media>:\RCX4.tmp
  • <Drive name for removable media>:\Secret.exe
  • <Drive name for removable media>:\mieot.exe
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\Porn.exe
  • <Drive name for removable media>:\RCX1.tmp
  • <Drive name for removable media>:\Sexy.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
Creates and executes the following:
  • %HOMEPATH%\mieot.exe
Modifies file system :
Creates the following files:
  • %HOMEPATH%\mieot.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\mieot.exe
  • <Drive name for removable media>:\autorun.inf
  • %HOMEPATH%\mieot.exe
Deletes the following files:
  • <Drive name for removable media>:\Passwords.exe
  • <Drive name for removable media>:\Porn.exe
  • <Drive name for removable media>:\Sexy.exe
Network activity:
Connects to:
  • 'ns#.###nsearcher.net':8000
UDP:
  • DNS ASK ns#.###nsearcher.net
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''