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Executive Summary Mirai, seen as revolutionary for malware that targets the Internet of Things (IoT), has wrought destruction around the globe and popularized IoT based malware...

Written by Roland Dobbins, ASERT Principal Engineer and Matt Bing, ASERT Security Analyst. In this article: SSDP Diffraction Attacks aren’t new; they’ve been observed in the wild...

Executive Summary ASERT recently discovered Lojack agents containing malicious C2s. These hijacked agents pointed to suspected Fancy Bear (a.k.a. APT28, Pawn Storm) domains. The...

Overview ASERT recently identified a campaign targeting commercial manufacturing in the US and potentially Europe in late 2017. The threat actors used phishing and downloader(s) to...

Key Findings A threat actor using the well-known banking malware Panda Banker (a.k.a Zeus Panda, PandaBot) has started targeting financial institutions in Japan. Based on our data...

Authors: Dennis Schwarz and Jill Sopko Special thanks to Richard Hummel and Hardik Modi for their contributions on this post. Figure 1: Pakistan themed decoy document Key Findings...

Last week, after Akamai confirmed a 1.3Tbps DDoS attack against Github, I published a blog that looked at the last five years of reflection/amplification attack innovation. I hope that it provides a helpful backgrounder on how we got here to the terabit attack era.

Special thanks to Hardik Modi, Steve Siadak and Roland Dobbins for their contributions on this post. Reflection amplification is a technique that allows cyber attackers to both...

ASERT Threat Summary: memcached Reflection/Amplification Description and DDoS Attack Mitigation Recommendations Date/Time: 27022018 2325UTC Title/Number: memcached Reflection...

February 20, 2018: This blog has been amended since it was originally published on February 15, 2018. This version removes the association with the APT group responsible for the...

Authors: Pete Arzamendi, Matt Bing, and Kirk Soluk. Satori, the heir-apparent to the infamous IOT malware Mirai, was discovered by researchers in December 2017. The word "satori"...

Executive Summary MedusaHTTP is a HTTP-based DDoS botnet written in .NET, that surfaced in early 2017. MedusaHTTP is based off of MedusaIRC which leveraged IRC for its command and...

On October 19 th, a team of security researchers warned of a new IoT Botnet that had already infected “an estimated million organizations” and that was poised to “take down the...

Executive Summary SnatchLoader is a “downloader” malware—a type of malware that specializes in distributing (or loading) other malware onto infected computers. We first started...

Since 2015, ASERT has observed and followed a DDoS Botnet named Flusihoc. To date very little has been published about this family, despite numerous anti-virus and intrusion...

More and more we’ve been seeing references to a malware family known as FormBook. Per its advertisements it is an infostealer that steals form data from various web browsers and...

Over the course of the last few weeks, a botnet comprised mainly of Android mobile devices has been utilized to launch a high-impact DDoS extortion campaign against multiple...

While revisiting a Flokibot campaign that was targeting point of sale (PoS) systems in Brazil earlier this year, we discovered something interesting. One of the command and control...