Neutrino

Neutrino was discovered in 2012 and remains active, exploiting vulnerabilities in all Java versions at least up to Java 7 Update 11. Neutrino downloads a ransomware variant on the victim’s machine when it successfully finds a vulnerable target. It features a user-friendly control panel, continuously monitors the status of present antivirus software, filters network traffic, and encrypts stolen information before sending it back to the server.

Angler

Angler is one of the most sophisticated EKs used by cybercriminals today and was first observed in 2013. Angler uses malvertising to direct users to its servers, and is known to exploit Adobe Flash Player, Internet Explorer, Microsoft Silverlight, Java, and ActiveX. Angler infects users with ransomware and point-of-sale (PoS) malware.

Fiesta

Fiesta was first released in 2008 and gained popularity with the decline of Blackhole EK. Fiesta was developed to deliver crypto-ransomware and fake antivirus malware payloads to its victims and exploits vulnerabilities in Flash, Internet Explorer, Adobe Acrobat Reader, and Microsoft Silverlight, and has the capability of terminating running processes and disabling common system tools to make detection and removal more difficult. Two-thirds of Fiesta-related traffic occurred in three countries: United States, Japan, and Australia.

Magnitude

Magnitude made itself known in October of 2013 when it breached the servers of PHP.net, a popular scripting language development website, and redirected the site’s visitors to its landing page using a compromised JavaScript file. It then exploited vulnerabilities in Java and Flash to deliver malicious payloads like Zeus, Andromeda, Necurs, Zusy, and Ngrbot. Magnitude was later used in an attack against Yahoo and WordPress website users.