We’ve released a CLI utility that converts THOR logs into a Timesketch-compatible format. This allows analysts to import and visualize THOR’s forensic findings as timestamped events on a unified timeline, together with data from other sources. The thor2ts utility...
Stealth in 100 Lines: Analyzing PAM Backdoors in Linux
Abuse of Modular Trust PAM (Pluggable Authentication Modules) is a fundamental part of Linux authentication infrastructure. Its flexibility - designed to support various authentication mechanisms - can be exploited by adversaries. In our analysis, we encountered a...
Nitrogen Dropping Cobalt Strike – A Combination of “Chemical Elements”
First detected in September 2024 and initially targeting the United States and Canada, the Nitrogen ransomware group has since expanded its reach into parts of Africa and Europe. Many of their victims remain absent from Nitrogen’s public ransomware blog and likely...
Introducing @NextronResearch: A New Channel for Threat Intelligence
As part of our commitment to sharing valuable threat intelligence and detection insights, we're excited to announce the launch of a dedicated Twitter account for Nextron Research: @nextronresearch. This account will be our team's platform for sharing detailed...
In-Depth Analysis of Lynx Ransomware
Introduction Lynx ransomware is a newly emerged and sophisticated malware threat that has been active since mid-2024. Lynx ransomware has claimed over 20 victims across a range of industries. Once it infiltrates a system, it encrypts critical files, appending a...
Detecting Web Shells: Why it is important to add an additional layer of protection on your existing security solutions
Understanding the importance of web shell detection is crucial in today’s cybersecurity landscape. Traditional antivirus solutions often fall short, but specialized tools like Nextron’s THOR APT scanner provide advanced protection against these stealthy threats, ensuring comprehensive security.
Tales Of Valhalla – March 2024
Every month the Nextron Threat Research Team (NTRT) shares insights into evasive threats that we’ve seen in the wild via our Valhalla service. The aim is to highlight interesting samples our rules detected and have or had very low detection rates as reported by...
Analysis of FalseFont Backdoor used by Peach-Sandstorm Threat Actor
In this article, we will explore the FalseFont Backdoor used by Peach Sandstorm APT to target defense contractors worldwide. The backdoor was initially identified and reported on by Microsoft. The malware features data exfiltration and remote access capabilities. It...