1
Q
Why is malware OS specific?
A
malware needs detailed knowledge of the operations,
procedures and setup of the system
2
Q
Name the 3 types of malware
A
Virus
Trojan
Worm
3
Q
Name 3 aspects of Viruses
A
- Malicious executable
- Attaches to a ‘host’
- .exe, unix shell scripts, windows batch files, macro
4
Q
Name 3 aspects of Virus Anatomy
A
- Concealment
- Propagation
- Payload
5
Q
Classifying Viruses by Triggers
A
• Logic bomb – Payload execution triggered by
event
• Time bomb – triggered by date/time
6
Q
Classifying Viruses by Infection
Mechanisms
A
- File Infector
- Boot sector infector
- Email virus
- Macro virus
- OS Virus
7
Q
How do Worms differ from Viruses
A
- Don’t need user interaction to spread
* Don’t need a ‘host’ document to attach to
8
Q
How can worms move?
A
- Unix remote shell scripts
- Password cracking
- Using bugs in networking software
9
Q
Trojan features
A
- Hidden inside innocuous programs
* Doesn’t self replicate
