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Win32.HLLW.Autoruner3.2023

Added to the Dr.Web virus database: 2020-02-18

Virus description added:

Technical Information

To ensure autorun and distribution
Creates or modifies the following files
  • <SYSTEM32>\tasks\nyan
Creates the following files on removable media
  • <Drive name for removable media>:\systemupdatewindows.exe
  • <Drive name for removable media>:\correct.lnk
  • <Drive name for removable media>:\000814251_video_01.lnk
Modifies file system
Creates the following files
  • %APPDATA%\systemupdatewindows.exe
Sets the 'hidden' attribute to the following files
  • <Drive name for removable media>:\systemupdatewindows.exe
Miscellaneous
Creates and executes the following
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /tn NYAN /F' (with hidden window)
  • '%WINDIR%\syswow64\schtasks.exe' /create /tn NYAN /tr "<Full path to file>" /sc minute /mo 1' (with hidden window)
Executes the following
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /tn NYAN /F
  • '%WINDIR%\syswow64\schtasks.exe' /create /tn NYAN /tr "<Full path to file>" /sc minute /mo 1

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