PPT with a history and type of malware

1. The Computer Malware
By Afeef Imad Khateeb
Palestine Polytechnic University
Date :the 22th of July 2012

2. Outline
• The malware.
• The effect of the malware.
• Timeline of malwares .
• Main characteristics of malwares.
• Types of malwares.
• Virus classification based on target .
• Detecting the virus
• The antivirus
• who write the viruses
• Stuxnet
• Recommendation

3. Abstract
• The internet has become a powerful tool for enhancing
innovation and productivity .nevertheless , the increasing
dependency on the internet and other communication network
means that the internet has become a popular and efficient
way to spread the computer viruses and other types of
malicious software or
Malware .

4. The Malware
What is a malware ?
It is a program that can spread across computers
and network by making copies of itself usually
without the knowledge of the user

5. The effect of the malwares
1)Slow down email
2)Steal confidential data.
3)Use your computer to attack websites
4)Let other users hijack your computer.
5)And more ………

6. Timeline of viruses
• 1950-2010
The first virus- at bell lab
The most powerful virus in the 20th century -
Michelangelo virus
The most powerful virus in the 21th century –Stuxnet

7. The Main Characteristics Of the
Malware
1) self-replication
2) the population of growth.
3) Parasitic malware

8. Types of viruses
• Logic –bomb
• Trojan horse
• Back door
• Spyware
• Adware
• Virus

9. Logic bomb
• Logic –bomb:
self replicate :no .
population growth : zero.
parasitic : possibly.

10. Trojan horse
• Trojan horse :
self replicate :no
population growth : zero
parasitic : yes

11. Back door
Back door :
self replicate : no.
population growth : zero.
parasitic : possibly.
Example
“”username = read_username()
password = read_password()
if tisername i s "133t h4ck0r":
return ALLOW^LOGIN
if username and password are valid:
return ALLOW_LOGIN
e l s e:
return DENY^LOGIN””

12. Spyware
• Spyware :
self replicate :No
population growth : Zero
parasitic : No
Attacks
1)Email addresses
2)Username/password
3)Bank account
4)Software licence

13. Adware
• Adware :
self replicate : No
population of growth: Zero
parasitic : No
This is similar to spyware but it is concentrated ti
advertisement

14. Viruses
Viruses or (Virii) :
self replicate : yes
population of growth : positive
parasitic : yes
Definitions of viruses
1)Germ
2)Intended
3)Dormant

15. Virus classification by target
• Boot sector infection

16. Virus classification by target cont
• File infector
• Macro

17. How to detect viruses

18. Command prompt
• The first way is to use the command prompt
• Very easy
• …/cd/windows/system32/setup

19. The antivirus
• The second way we use is the antivirus
What is the antivirus Definition :
Antivirus is a software that can delete viruses
,prevent access to infected files and often
eliminate the infection.

20. Types of antivirus of the antivirus
1)Heuristics detection.
2)virus scanners.
A)On-Access.
B)On-Demand.

21. Three steps the antivirus use
1)Detection: detecting whether or not some code is a
virus or not which is in purest form of detection
results in a Boolean value yes there is a virus- so it is
infected no there is no virus.
2)Identification : once a virus is detected the
identification process may be distinct from detection or
identification may occur as a side effect of detection .
3)Disinfection : is the process of removing detected
viruses this is something called cleaning .

22. Who write viruses
• If your computer, or your network, is hit by a
virus, the first thing you’re likely to say –
expletives apart – is “Why do people write
these viruses?”

23. Stuxnet
• Now we will see the video which talks about
stuxnet
1)zero days
2)Iran enrichment facility
3)”Israel” and USA
4) The purpose of Stuxnet

24. Recommendation and conclusion
I have found that there is no possibility that someone could
prevent himself from malware %100 because every
malware has its own characteristics and works different
than any other malware so the user must take care and pay
attention when using the internet or using any other
peripherals like USB –Flash and also the user must make
sure that an Email is from a known place and also the
websites are famous, chose a good antivirus and make sure
of its updates .

25. Make a small virus using the notepad
• Now we will make a small virus using the
notepad …….

26. Questions and answers

27. References
• 1) John Aycock, Springer, computer viruses and
malware 2006, definition and timeline pp. 11-33
andpp.53-70.
• 2) Cio website for the malware timeline
• http://www.cio.com/article/116250/A_Brief_History_o
f_Malware_and_Cybercrime _(accessed july15, 2012)
• 3) Eric Filio, Springer, computer viruses from theory to
application2005, viruses or worms life cycle, pp.87-90.
• 4) Paul Oldfield, Sophos, viruses and spam what you
need to know, 2004, pp.27-52.