N2K Networks
Research Saturday
Every Saturday, we sit down with cybersecurity researchers to talk shop about the latest threats, vulnerabilities, and technical discoveries.
Author
N2K Networks
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Podcast website
Latest episode
Jul 11, 2026
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Episodes
Ezuri: Regenerating a different kind of target. 03.04.2021 19:16
Guests Fernando Martinez and Tom Hegel from AT&T Alien Labs join Dave to discuss their team's research "Malware using new Ezuri memory loader." Multiple threat actors have recently started using a Go language (Golang) tool to act as a packer and avoid Antivirus detection. Additionally, the Ezuri memory loader tool acts as a malware loader and executes its payload in memory, without writing the fil...
How are we doing in the industrial sector? 27.03.2021 21:50
Guest Sergio Caltagirone from Dragos joins us to take us through their 2020 ICS Cybersecurity Year in Review report. Dragos's annual ICS Year in Review provides an overview and analysis of ICS vulnerabilities, global threat activity targeting industrial environments, and industry trends and observations gathered from customer engagements worldwide. The goal of the report is to give asset owners an...
BendyBear: difficult to detect and downloader of malicious payloads. 20.03.2021 15:52
Guest Jen Miller-Osborn from Palo Alto Networks' Unit 42 joins us to discuss their research into BendyBear. Highly malleable, highly sophisticated and over 10,000 bytes of machine code. The code behavior and features strongly correlate with that of the WaterBear malware family, which has been active since as early as 2009. The malware is associated with the cyber espionage group BlackTech, which m...
Keeping data confidential with fully homomorphic encryption. 13.03.2021 23:38
Guest Dr. Rosario Cammarota from Intel Labs joins us to discuss confidential computing. Confidential computing provides a secure platform for multiple parties to combine, analyze and learn from sensitive data without exposing their data or machine learning algorithms to the other party. This technique goes by several names — multiparty computing, federated learning and privacy-preserving analytics...
Diving deep into North Korea's APT37 tool kit. 06.03.2021 18:18
Guest Hossein Jazi of Malwarebytes joins us to take a deep dive into North Korea's APT37 (aka ScarCruft, Reaper and Group123) toolkit. On December 7 2020 the Malwarebytes Labs threat team identified a malicious document uploaded to Virus Total which was purporting to be a meeting request likely used to target the government of South Korea. The meeting date mentioned in the document was 23 Jan 2020...
Shining a light on China's cyber underground. 27.02.2021 23:56
Guest Maurits Lucas from Intel471 joins us to discuss his team's research into cybercrime in China. Data from Intel 471 show that the Chinese cybercrime underground proliferates through use of common methods or platforms, but behaves differently in large part due to the caution that actors take with regard to their identity. While the average citizen must follow the heavy handed nature of the gove...
Attackers (ab)using Google Chrome. 20.02.2021 19:32
Guest Bojan Zdrnja of Infigo IS and a certified instructor at SANS Institute shares an incident he discovered where attackers were using a pretty novel way of exfiltrating data and using that channel for C&C communication. The code that was acquired was only partially recovered, but enough to indicate powerful features that the attackers were (ab)using in Google Chrome. The basis for this attack w...
Using the human body as a wire-like communication channel. 13.02.2021 19:59
Guest Dr. Shreyas Sen, a Perdue University associate professor of electrical and computer engineering, joins us to discuss the following scenario:. Instead of inserting a card or scanning a smartphone to make a payment, what if you could simply touch the machine with your finger? A prototype developed by Purdue University engineers would essentially let your body act as the link between your card...
"Follow the money" the cybersecurity way. 06.02.2021 27:17
Guest Joe Slowik joins us from Domain Tools to share their research "Current Events to Widespread Campaigns: Pivoting from Samples to Identify Activity" where they examined technical artifacts emerging around the 2020 conflict between Armenia and Azerbaijan in the Caucasus region. Cyber Threat Intelligence (CTI) practitioners can gain insight into adversary operations by tracking conflicts or geo...
The Kimsuky group from North Korea expands spyware, malware and infrastructure. 30.01.2021 17:24
Guest Yonatan Striem-Amit joins us from Cybereason to share their Nocturnus Team research into Kimsuky. The Cybereason Nocturnus Team has been tracking various North Korean threat actors, among them the cyber espionage group known as Kimsuky, (aka: Velvet Chollima, Black Banshee and Thallium), which has been active since at least 2012 and is believed to be operating on behalf of the North Korean r...
Trickbot may be down, but can we count it out? 23.01.2021 19:48
Guest Mark Arena from Intel471 joins us to discuss his team's research into Trickbot and its evolution from a banking trojan to a long-standing, most likely well-resourced operation that was taken down last year. Mark shares some insight into Trickbot's order of operations and what went on behind the scenes that his team working with Brian Krebs were able to discover. Since the separate and indepe...
Manufacturing sector is increasingly a target for adversaries. 16.01.2021 24:32
Guest Selena Larson, senior cyber threat analyst at Dragos, Inc., joins us to discuss their research into recent observations of ICS-targeting threats to manufacturing organizations. Cyber risk to the manufacturing sector is increasing, led by disruptive cyberattacks impacting industrial processes, intrusions enabling information gathering and process information theft, and new activity from Indu...
Emotet reemerges and becomes one of most prolific threat groups out there. 09.01.2021 24:35
Deep Instinct's Shimon Oren joins us to talk about his team's research on "Why Emotet's latest wave is harder to catch than ever before - Part 2." Emotet appears to have reemerged more evasive than before, this time with a payload delivered from a loader that security tools aren’t equipped to handle. Emotet, the largest malware botnet today, started in 2014 and continues to be one of the most chal...
Encore: Unpacking the Malvertising Ecosystem. [Research Saturday] 02.01.2021 27:57
Researchers at Cisco's Talos Unit recently published research exploring the tactics, technics and procedures of the global malvertising ecosystem. Craig Williams is head of Talos Outreach at Cisco, and he guides us through the life cycle of malicious online ads, along with tips for protecting yourself and your organization. The research can be found here: https://blog.talosintelligence.com/2019/0...
Encore: Seedworm digs Middle East intelligence. [Research Saturday] 26.12.2020 18:27
Researchers at Symantec have been tracking Seedworm, a cyber espionage group targeting the Middle East as well as Europe and North America. The threat group targets government agencies, oil & gas facilities, NGOs, telecoms and IT firms. Al Cooley is director of product management at Symantec, and he joins us to share their findings. The original research can be found here: https://www.symantec.com...
Advertising Software Development Kit (SDK): serving up more than just in-app ads and logging sensitive data. 19.12.2020 25:11
On August 24, 2020, Snyk announced the discovery of suspicious behaviors in the iOS version of a popular advertising SDK known as Mintegral. At that time, they had confirmed with partners in the advertising attribution space that at minimum, Mintegral appeared to be using this functionality to gather large amounts of data and commit ad attribution fraud. Their research showed that Mintegral was us...
Following DOJ indictment, a look back on NotPetya and Olympic Destroyer research. 12.12.2020 32:48
From US Department of Justice: "On Oct. 15, 2020, a federal grand jury in Pittsburgh returned an indictment charging six computer hackers, all of whom were residents and nationals of the Russian Federation (Russia) and officers in Unit 74455 of the Russian Main Intelligence Directorate (GRU), a military intelligence agency of the General Staff of the Armed Forces. These GRU hackers and their co-c...
SSL-based threats remain prevalent and are becoming increasingly sophisticated. 05.12.2020 15:56
While SSL/TLS encryption is the industry standard for protecting data in transit from prying eyes, encryption has, itself, become a threat. It is often leveraged by attackers to sneak malware past security tools that do not fully inspect encrypted traffic. As the percentage of traffic that is encrypted continues to grow, so do the opportunities for attackers to deliver threats through encrypted ch...
Encore: Using global events as lures for malicious activity. 28.11.2020 20:52
The goal of malicious activity is to compromise the system to install some unauthorized software. Increasingly that goal is tied to one thing: the user. Over the past several years, we as an industry improved exploit mitigation and the value of working exploits has increased accordingly. Together, these changes have had an impact on the threat landscape. We still see large amounts of active exploi...
Misconfigured identity and access management (IAM) is much more widespread. 21.11.2020 19:41
Identity and access are intrinsically connected when providing security to cloud platforms. But security is only effective when environments are properly configured and maintained. In the 2H 2020 edition of the biannual Unit 42 Cloud Threat Report, researchers conducted Red Team exercises, scanned public cloud data and pulled proprietary Palo Alto Networks data to explore the threat landscape of i...
That first CVE was a fun find, for sure. 14.11.2020 27:36
In the late 90s, hackers who discovered vulnerabilities would sometimes send an email to Bugtraq with details. Bugtraq was a notification system used by people with an interest in network security. It was also a place that might have been monitored by employees of software companies looking for reports of vulnerabilities pertaining to their software. The problem was - there wasn't an easy way to t...
PoetRAT: a complete lack of operational security. 07.11.2020 21:00
Cisco Talos discovered PoetRAT earlier this year. Since then, they observed multiple new campaigns indicating a change in the actor's capabilities and showing their maturity toward better operational security. They assess with medium confidence this actor continues to use spear-phishing attacks to lure a user to download a malicious document from temporary hosting providers. They currently believe...
Leveraging for a bigger objective. 31.10.2020 24:44
The U.S. government has charged seven men in relation to hundreds of cyber attacks against organizations in the U.S. and multiple other countries in Asia and Europe. Two of the men, who were based in Malaysia, were arrested and their extradition to the U.S. has been requested. The other five are based in China and remain at large. The attacks were attributed to a China-linked organization dubbed A...
The Malware Mash! 30.10.2020 3:05
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Just saying there are attacks is not enough. 24.10.2020 26:38
Ben-Gurion University researchers have developed a new artificial intelligence technique that will protect medical devices from malicious operating instructions in a cyberattack as well as other human and system errors. Complex medical devices such as CT (computed tomography), MRI (magnetic resonance imaging) and ultrasound machines are controlled by instructions sent from a host PC. Abnormal or a...
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