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Win32.HLLW.Autoruner2.30304

Added to the Dr.Web virus database: 2017-11-18

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Google Chrome' = '<Full path to file>'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Server.exe' = '<Full path to file>'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\Google Chrome.exe
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf.lnk
  • <Drive name for removable media>:\Umbrella.flv.exe.lnk
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\73769923.exe
  • <Drive name for removable media>:\Umbrella.flv.exe
Malicious functions:
Executes the following:
  • '<SYSTEM32>\schtasks.exe' /create /sc minute /mo 1 /tn asfasfas /tr C:\sdasfasfas.exe
Modifies file system:
Creates the following files:
  • C:\autorun.inf
  • C:\Umbrella.flv.exe
  • C:\sdasfasfas.exe
Sets the 'hidden' attribute to the following files:
  • C:\Umbrella.flv.exe
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\Umbrella.flv.exe
  • C:\sdasfasfas.exe
  • <Drive name for removable media>:\73769923.exe
  • C:\autorun.inf
Deletes the following files:
  • <Drive name for removable media>:\Umbrella.flv.exe.lnk
  • <Drive name for removable media>:\autorun.inf.lnk
Substitutes the following files:
  • <Drive name for removable media>:\Umbrella.flv.exe.lnk
  • <Drive name for removable media>:\autorun.inf.lnk
Network activity:
Connects to:
  • 'bo####.publicvm.com':1080
UDP:
  • DNS ASK bo####.publicvm.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_traywnd' WindowName: ''
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