Pepijn Hack, Cybersecurity Analyst, Fox-IT, part of NCC Group Zong-Yu Wu, Threat Analyst, Fox-IT, part of NCC Group Abstract Organizations worldwide continue to face waves of digital extortion in the form of targeted ransomware. Digital extortion is now classified as the most prominent form of cybercrime and the most devastating and pervasive threat to functioning … Continue reading “We wait, because we know you.” Inside the ransomware negotiation economics.
Threat Intel Analyst: Antonis Terefos (@Tera0017)Data Scientist: Anne Postma (@A_Postma) 1. Introduction TA505 is a sophisticated and innovative threat actor, with plenty of cybercrime experience, that engages in targeted attacks across multiple sectors and geographies for financial gain. Over time, TA505 evolved from a lesser partner to a mature, self-subsisting and versatile crime operation with … Continue reading TA505: A Brief History Of Their Time
Authors: Nikolaos Pantazopoulos, Stefano Antenucci (@Antelox), Michael Sandee and in close collaboration with NCC’s RIFT. About the Research and Intelligence Fusion Team (RIFT):RIFT leverages our strategic analysis, data science, and threat hunting capabilities to create actionable threat intelligence, ranging from IOCs and detection capabilities to strategic reports on tomorrow's threat landscape. Cyber security is an … Continue reading WastedLocker: A New Ransomware Variant Developed By The Evil Corp Group
Introduction A while back during a penetration test of an internal network, we encountered physically segmented networks. These networks contained workstations joined to the same Active Directory domain, however only one network segment could connect to the internet. To control workstations in both segments remotely with Cobalt Strike, we built a tool that uses the … Continue reading LDAPFragger: Bypassing network restrictions using LDAP attributes
In the first days of 2018, a number of vulnerabilities were disclosed that are present in many modern-day CPUs. In this blog post we address the most frequently asked questions about Spectre and Meltdown with a focus on providing you with actionable guidance about what to do. This post is in addition to our webinar … Continue reading Spectre and Meltdown: What you Need to Know