@echo off
REM Administrative check from here: [b]这里www.stackoverflow.com/questions/4051883/batch-script-how-to-check-for-admin-rights[/b]


REM Vaccination discovered by twitter.com/0xAmit/status/879778335286452224

REM Batch file created by Lawrence Abrams of BleepingComputer.com. @bleepincomputer@lawrenceabrams

echo Administrative permissions required.
 Detecting permissions...
echo.
              
net session >nul 2>&1
if %errorLevel% == 0
 (
        if exist C:\Windows\perfc
 (
               
echo Computer already vaccinated for NotPetya/Petya/Petna/SortaPetya.
        
echo.
       
) else
 (
              
echo This is a NotPetya/Petya/Petna/SortaPetya Vaccination file. Do not remove as it protects you from being encrypted by Petya. 
> C:\Windows\perfc
               
echo This is a NotPetya/Petya/Petna/SortaPetya Vaccination file. Do not remove as it protects you from being encrypted by Petya. 

> C:\Windows\perfc.dll
 
       
echo This is a NotPetya/Petya/Petna/SortaPetya Vaccination file. Do not remove as it protects you from being encrypted by Petya. 

> C:\Windows\perfc.dat
                
attrib +R C:\Windows\perfc
             
attrib +R C:\Windows\perfc.dll
           
attrib +R C:\Windows\perfc.dat
              
echo Computer vaccinated for current version of NotPetya/Petya/Petna/SortaPetya.
            
echo.
)
)
 else
 (
        
echo Failure: You must run this batch file as Administrator.
)
 pause