This post was authored by Nick Biasini Talos has found a new SPAM campaign that is using multiple layers of obfuscation to attempt to evade detection. Spammers are always evolving to get their messages to the end users by bypassing SPAM filters while still appearing convincing enough to get a user to complete the actions required […]
This post was authored by Nick Biasini Late last week Talos researchers noticed a drastic uptick in Angler Exploit Kit activity. We have covered Angler previously, such as the discussion of domain shadowing. This exploit kit evolves on an almost constant basis. However, the recent activity caught our attention due to a change to the URL […]
This post was authored by Earl Carter & Jaeson Schultz. Talos is always fascinated by the endless creativity of those who send spam. Miscreants who automate sending spam using botnets are of particular interest. Talos has been tracking a spam botnet that over the past several months that has been spamming weight loss products, male erectile […]
Today, Microsoft has released their monthly set of security bulletins designed to address security vulnerabilities within their products. This month’s release sees a total of 13 bulletins being released which address 48 CVEs. Three of the bulletins are listed as Critical and address vulnerabilities in Internet Explorer, GDI+ Font Parsing, and Windows Journal. The remaining […]
This post was authored by Ben Baker and Alex Chiu. Executive Summary Threat actors and security researchers are constantly looking for ways to better detect and evade each other. As researchers have become more adept and efficient at malware analysis, malware authors have made an effort to build more evasive samples. Better static, dynamic, and automated analysis tools […]
This post was authored by: Andrea Allievi, Earl Carter & Emmanuel Tacheau Update 4/28: Windows files recompiled with backward compatibility in Visual Studio 2008 Update 5/8: We’ve made the source code available via Github here Update 6/9/2016: We’ve released a tool to decrypt any TeslaCrypt Version After the takedown of Cryptolocker, we have seen the rise […]
This post was authored by Nick Biasini and Joel Esler Talos has observed an explosion of malicious downloaders in 2015 which we’ve documented on several occasions on our blog. These downloaders provide a method for attackers to push different types of malware to endpoint systems easily and effectively. Upatre is an example of a malicious […]
Today, Microsoft has released their monthly set of security bulletins designed to address security vulnerabilities within their products. This month’s release sees a total of 11 bulletins being released which address 26 CVEs. The first 4 bulletins are rated Critical and address vulnerabilities within Internet Explorer, Office, IIS, and Graphics Component. The remaining 7 bulletins […]
This post was authored by Nick Biasini, Matt Olney, & Craig Williams Introduction Talos has been monitoring a persistent threat for quite some time, a group we refer to as SSHPsychos or Group 93. This group is well known for creating significant amounts of scanning traffic across the Internet. Although our research efforts help […]
