Threat Research Archives

Threat Research

Malicious PNGs: What You See Is Not All You Get!

This post was authored by Earl Carter and Nick Randolph. Threat actors are continually evolving their techniques. One of the latest Graftor variants is delivering a Malware DLL via a PNG file delivery mechanism. Graftor basically indicates some type

February 25, 2015 • 3 min read

threat research

Talos Group

Tax Time: Let the Phishing Begin

This post was authored by Earl Carter and Craig Williams. With the April 15th US tax deadline only about 2 months away, a new wave of tax related phishing is underway. In this latest spear-phishing campaign, attackers are attempting to gain access to

February 18, 2015 • 3 min read

threat research

Talos Group

Bad Browser Plug-ins Gone Wild: Malvertising, Data Exfiltration, and Malware, Oh my!

This post was authored by Fred Concklin, William Largent, Martin

February 12, 2015 • 4 min read

threat research

Talos Group

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

February 9, 2015 • 6 min read

threat research

Talos Group

Flash 0-day Exploited by Angler Exploit Kit

This post was authored by Nick Biasini, Earl Carter and Jaeson Schultz Flash has long been a favorite target among Exploit Kits (EK). In October 2014 the Angler EK was believed to be targeting a new Flash vulnerability. The bug that the Angler exploit

January 23, 2015 • 3 min read

threat research

Talos Group

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

January 6, 2015 • 6 min read

threat research