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Win32.HLLW.Autoruner.58826

Added to the Dr.Web virus database: 2011-09-13

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'AASSKK' = '<LS_APPDATA>\SERVICES.EXE'
Creates the following files on removable media:
  • <Drive name for removable media>:\Autorun.inf
  • <Drive name for removable media>:\ASK.exe
  • <Drive name for removable media>:\Flash Game 2007\Readme.txt
  • <Drive name for removable media>:\Data.bat
  • <Drive name for removable media>:\Flash Game 2007\Setup Game.exe
Malicious functions:
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
  • Registry Editor (RegEdit)
Creates and executes the following:
  • <LS_APPDATA>\SERVICES.EXE 
Modifies file system :
Creates the following files:
  • <LS_APPDATA>\SERVICES.EXE
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\ASK.exe
  • <Drive name for removable media>:\Autorun.inf
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'Indicator' WindowName: ''