Cisco Talos Blog

July 31, 2015 07:01

Your Files Are Encrypted with a "Windows 10 Upgrade"

This post was authored by Nick Biasini with contributions from Craig Williams & Alex Chiu Update 8/1: To see a video of this threat in action click here Adversaries are always trying to take advantage of current events to lure users into executing their malicious payload. T

February 9, 2015 05:06

Cryptowall 3.0: Back to the Basics

This post was authored by Andrea Allievi  & Earl Carter Ransomware continues to impact a large number of organizations and the malware continues to evolve. In January, we examined Cryptowall 2.0 and highlighted new features incorporated into the dropper and Cryptowall binary

January 6, 2015 02:14

Ransomware on Steroids: Cryptowall 2.0

This post was authored by Andrea Allievi and Earl Carter. Ransomware holds a user’s data hostage. The latest ransomware variants encrypt the user’s data, thus making it unusable until a ransom is paid to retrieve the decryption key. The latest Cryptowall 2.0, utilizes TOR to obf