1. Lab 7 – Defeating MALWARE
Network Security Lab

2. What is Malware MALicious software A software that can Alter :
Computer settings
Behavior
Files
Services
Ports
Speed

3. Sources INTERNET!!! Insufficient security on computer
Honeypot websites
Free unverified downloads
Torrents
Pop-ups! s
Data media (USB, CD, DVD, etc.,)

4. Symptoms Unusual behavior of computer Slow Speed Pop ups!
Replication of files
Unnecessary files
Corrupted Executables
Denial of access to applications

5. Types of Malware
Virus: Cannot sustain on its own, has to attach to a host. Targeted behavior, feeds on alike files, if a word file is infected, it may replicate to other word files or will corrupt the Word Application itself.
Trojan: Disguised Killers, look like genuine software, once installed open backdoors. (Free memory cleaners, boosters and others). The backdoor is used by other viruses and worms to enter the computer.
Worms: Self Sustaining, can replicate itself to other file types, makes copies of files, decreases the speed and performance of the computer.

6. Viruses Viruses need time to infect.
Has potential to infect programs only after executing
Every time they are executed, they will target applications and corrupt them.
Disguise as resident programs of the computer
Has the ability to corrupt the files, delete them or change the size of memory.

7. Trojans Appear as genuine executable software with a purpose
Mostly free
Once installed create backdoors through with viruses and worms can enter.
Alter the behavior of computer and applications (moving icons, encrypt files, corrupting the files)

8. Counter Measures
Try to ensure that you are browsing trusted websites (
Never click any enticing pop-ups (Lottery, win an Iphone)
Doubtful, unknown and malicious s (‘you have won $1.67 million’)
Ensure that removable media (USB, CD, DVD) is not infected.
Install genuine (paid and licensed) antimalware, antivirus, IDS or IPS.
Learn how to configure the built-in windows firewall
Schedule regular scan when you know you are not using the computer.

9. Lab Exercise
Refer to Exercise file