There were 10 prominent malware families that infected computer systems in July, according to Check Point Software Technologies' Global Threat Impact Index.
The index is powered by Check Point's ThreatCloud intelligence, a database that analyzes more than 250 million addresses for bot discovery, more than 11 million malware signatures and more than 5.5 million infected websites.
Here are the 10 most prevalent malware families Check Point identified in July.
1. RoughTed, which uses malvertising to deliver malicious websites and payloads on any type of platform and operating system
2. HackerDefender, a user-mode rootkit for Windows that can hide files, processes and registry keys
3. Fireball, a browser hijacker that can be turned into a malware downloader
4. Nivdort, a bot that can collect passwords, modify system settings and download additional malware
5. Conficker, a worm that allows a botnet to remotely control operations and malware downloads
6. Cryptowall, a ransomware that uses advanced-level encryption and is distributed via exploit kits, malvertising and phishing
7. Zeus, a banking Trojan that logs keystrokes to steal banking information
8. Pykspa, a worm that spreads by sending instant messages to Skype contacts and steals personal user information
9. Pushdo, a trojan that downloads spam modules to install other third party malware
10. Hancitor, a downloader, often delivered via phishing emails, used to install malicious payloads
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