1. Ransomware
By Jeremy Risinger

2. Outline Introduction to Ransomware Examples of Ransomware
What it is
What it does
How it accomplishes its task
Examples of Ransomware
CryptoWall
Onion
Prevention/Removal
Conclusion/Recap

3. Introduction Ransomware Cryptovirology Type of malware
Takes control over computer
Style
Encrypting
Public Key
Private Key
Non-Encrypting
Cryptovirology
1996 by Adam Young, Moti Yung
Study of using cryptography maliciously

4. Transmission E-mail Acting as a Trojan Network vulnerabilities Spam
Anti-Virus Programs
Popup windows
Network vulnerabilities

5. CryptoWall File-encrypting 600,000 computers Income: over $1 million
Generates a RSA key pair for each
600,000 computers
March 2013 until August 24th 2014
5.25 Billion files encrypted
Income: over $1 million

6. Onion Also called: Trojan-Ransom.Win32.Onion Encrypting
Requires payment in bitcoins
72 hour deadline
Uses the Tor network

7. CryptoWall

8. Prevention/Removal Smart use Anti-Virus programs Firewalls
Do not click spam links
Anti-Virus programs
Scan regularly
Firewalls

9. Conclussion
What is is
What it does
How it does it
Ways to prevent it

10. References CryptoWall Held over… Author: Lucian Constantian
The Onion Ransomware. Author: Kaspersky Security
What is Ransomware? Author: Cory Janssen