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Win32.HLLW.Autoruner2.37693

Added to the Dr.Web virus database: 2018-04-28

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe, wscript.exe //B "%TEMP%\System\smss-DoOoMs.vbs"'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,wscript.exe //B "%TEMP%\System\smss-DoOoMs.vbs"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Skype' = '"%ProgramFiles% (x86)\Skype\Phone\Skype.exe" /minimized /regrun, wscript.exe //B "%TEMP%\\Media Player\smss-DoOoMp.lnk"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Skype' = '"%ProgramFiles%\Skype\Phone\Skype.exe" /minimized /regrun, wscript.exe //B "%TEMP%\\Media Player\smss-DoOoMp.lnk"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'smss-DoOoMs' = '"%TEMP%\Media Player\smss-DoOoMp.lnk"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'smss-DoOoM' = '"%TEMP%\Media Player\smss-DoOoM.lnk"'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'smss-DoOoM' = '"%TEMP%\Media Player\smss-DoOoM.lnk"'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'smss-DoOoMs' = '"%TEMP%\Media Player\smss-DoOoMp.lnk"'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe, wscript.exe //B "%APPDATA%\System\smss-DoOoMs.vbs"'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,wscript.exe //B "%APPDATA%\System\smss-DoOoMs.vbs"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Skype' = '"%ProgramFiles% (x86)\Skype\Phone\Skype.exe" /minimized /regrun, wscript.exe //B "%APPDATA%\Media Player\smss-DoOoMp.lnk"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Skype' = '"%ProgramFiles%\Skype\Phone\Skype.exe" /minimized /regrun, wscript.exe //B "%APPDATA%\Media Player\smss-DoOoMp.lnk"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'smss-DoOoMs' = '"%APPDATA%\Media Player\smss-DoOoMp.lnk"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'smss-DoOoM' = '"%APPDATA%\Media Player\smss-DoOoM.lnk"'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'smss-DoOoM' = '"%APPDATA%\Media Player\smss-DoOoM.lnk"'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'smss-DoOoMs' = '"%APPDATA%\Media Player\smss-DoOoMp.lnk"'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\smss-DoOoM.lnk
  • %HOMEPATH%\Start Menu\Programs\Startup\smss-DoOoMs.lnk
Creates the following files on removable media:
  • <Drive name for removable media>:\DCIM.lnk
  • <Drive name for removable media>:\Games.lnk
  • <Drive name for removable media>:\Movies.lnk
  • <Drive name for removable media>:\Pictures.lnk
  • <Drive name for removable media>:\Videos.lnk
Malicious functions:
Executes the following:
  • '<SYSTEM32>\taskkill.exe' /F /IM SpyTheSpy.exe
  • '<SYSTEM32>\taskkill.exe' /F /IM TiGeR-Firewall.exe
  • '<SYSTEM32>\taskkill.exe' /F /IM bavtray.exe
Modifies file system:
Creates the following files:
  • %TEMP%\1.tmp\batfile.bat
  • %TEMP%\1.tmp\encoded.vbe
  • %APPDATA%\Media Player\smss-DoOoMp.lnk
  • %APPDATA%\Privacy\smss-DoOoM.vbe
  • %APPDATA%\System\smss-DoOoMs.vbs
  • %APPDATA%\Service\smss-DoOoMs.vbe
  • %APPDATA%\Media Player\smss-DoOoM.lnk
  • %TEMP%\Media Player\smss-DoOoMp.lnk
  • %TEMP%\Privacy\smss-DoOoM.vbe
  • %TEMP%\System\smss-DoOoMs.vbs
  • %TEMP%\Service\smss-DoOoMs.vbe
  • %TEMP%\Media Player\smss-DoOoM.lnk
Sets the 'hidden' attribute to the following files:
  • %TEMP%\1.tmp\encoded.vbe
Network activity:
Connects to:
  • 'localhost':1037
  • 'vk######to7vdx7o.onion.link':80
TCP:
HTTP POST requests:
  • http://vk######to7vdx7o.onion.link/?me#
UDP:
  • DNS ASK vk######to7vdx7o.onion.link
Miscellaneous:
Searches for the following windows:
  • ClassName: '' WindowName: ''
Executes the following:
  • '<SYSTEM32>\cmd.exe' /c ""%TEMP%\1.tmp\batfile.bat" "
  • '<SYSTEM32>\wscript.exe' //b encoded.vbe
  • '<SYSTEM32>\schtasks.exe' /create /sc ONLOGON /RL HIGHEST /tn smss-DoOoM.vbe /tr "%TEMP%\System\smss-DoOoMs.vbs"
  • '<SYSTEM32>\schtasks.exe' /create /sc ONLOGON /RL HIGHEST /tn smss-DoOoM.vbe /tr "%APPDATA%\System\smss-DoOoMs.vbs"