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Win32.HLLW.Autoruner.62483

Added to the Dr.Web virus database: 2011-10-07

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /x'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /G'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /f'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /t'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /m'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /b'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /z'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /u'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /e'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /h'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /V'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /s'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /c'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /P'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /Y'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /A'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /W'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /O'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /i'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /L'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /R'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nueruas' = '%HOMEPATH%\nueruas.exe /D'
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>:\nueruas.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%\nueruas.exe 
Modifies file system :
Creates the following files:
  • %HOMEPATH%\nueruas.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\nueruas.exe
  • <Drive name for removable media>:\autorun.inf
  • %HOMEPATH%\nueruas.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#.##ayer1532.com':8000
UDP:
  • DNS ASK ns#.##ayer1532.com
  • '<Private IP address>':1034
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''