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Win32.HLLW.Autoruner1.9500

Added to the Dr.Web virus database: 2011-12-24

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'hoaise' = '%HOMEPATH%\hoaise.exe /g'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'hoaise' = '%HOMEPATH%\hoaise.exe /h'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'hoaise' = '%HOMEPATH%\hoaise.exe /p'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'hoaise' = '%HOMEPATH%\hoaise.exe /x'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'hoaise' = '%HOMEPATH%\hoaise.exe /W'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'hoaise' = '%HOMEPATH%\hoaise.exe /R'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'hoaise' = '%HOMEPATH%\hoaise.exe /k'
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>:\hoaise.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%\hoaise.exe 
Modifies file system :
Creates the following files:
  • %HOMEPATH%\hoaise.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\hoaise.exe
  • <Drive name for removable media>:\autorun.inf
  • %HOMEPATH%\hoaise.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#.##ayer1352.com':8000
UDP:
  • DNS ASK ns#.##ayer1352.com
  • '<Private IP address>':1035
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''