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Win32.HLLW.Autoruner2.52892

Added to the Dr.Web virus database: 2019-07-21

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'svchost.exe' = '"%APPDATA%\svchost.exe"'
  • [<HKLM>\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run] 'svchost.exe' = '"%APPDATA%\svchost.exe"'
Creates or modifies the following files
  • %APPDATA%\microsoft\windows\start menu\programs\startup\svchost.exe
Creates the following files on removable media
  • <Drive name for removable media>:\svchost.exe
  • <Drive name for removable media>:\my pictures.lnk
  • <Drive name for removable media>:\000814251_video_01.avi.lnk
  • <Drive name for removable media>:\correct.avi.lnk
  • <Drive name for removable media>:\archer.avi.lnk
  • <Drive name for removable media>:\default.bmp.lnk
  • <Drive name for removable media>:\tileimage.bmp.lnk
  • <Drive name for removable media>:\dialmap.bmp.lnk
  • <Drive name for removable media>:\coffee.bmp.lnk
  • <Drive name for removable media>:\toolbar.bmp.lnk
  • <Drive name for removable media>:\contosoroot_1.cer.lnk
Malicious functions
Executes the following
  • '%WINDIR%\syswow64\netsh.exe' firewall add allowedprogram "%APPDATA%\svchost.exe" "svchost.exe" ENABLE
Modifies file system
Creates the following files
  • %APPDATA%\svchost.exe.ini
  • %APPDATA%\svchost.exe
Sets the 'hidden' attribute to the following files
  • <Drive name for removable media>:\svchost.exe
Network activity
UDP
  • DNS ASK bi####t1.no-ip.org
Miscellaneous
Creates and executes the following
  • '%APPDATA%\svchost.exe' "del" <Full path to file>
  • '%WINDIR%\syswow64\netsh.exe' firewall add allowedprogram "%APPDATA%\svchost.exe" "svchost.exe" ENABLE' (with hidden window)