In the ever-evolving landscape of cybersecurity threats, a disconcerting phenomenon has emerged, challenging the conventional notions of malicious software. Enter “protestware” — a term that sends shivers down the spines of cybersecurity experts and individuals alike. Unlike traditional malware, protestware isn’t designed with the sole purpose of exploiting vulnerabilities or stealing sensitive information. Instead, it […]Read more "The Rising of Protestware During Times of War"
Malware persistence is a crucial aspect of cyber threats that often goes unnoticed by unsuspecting users. In the realm of cybersecurity, it refers to the ability of malicious software to establish a foothold on a targeted system, allowing it to maintain its presence over an extended period. This persistence is achieved through various covert techniques, […]Read more "Malware Persistence Locations: Windows and Linux"
Introduction System calls are the ultimate high-level atomic actions that Malware writers might control. System calls sequences are the defacto ultimate way to divide behaviors between good and bad. For example the system call “encrypt” could be used by a privacy oriented software to encrypt content before shipping-it to a cloud storage or it could […]Read more "Windows System Calls For Hunters"
Introduction When I’ve firstly seen the technique behind the Shellcode execution through Microsoft Windows Callbacks, I thought it was pure magic. But then, digging a little bit on it, I figured out that it was just brilliant ! Nowadays this technique is quite used in underground communities to inject shellcode into running processes so I […]Read more "Running Shellcode Through Windows Callbacks"
Disclaimer This blog post, as all the blog posts in my web-corner, want to share cybersecurity related researches and personal experiences in order to improve threats analysis, risks and cybersecurity awareness. In this specific cases junior cybersecurity analysts could improve their skills for free by understanding how to build threat intelligence and how to track […]Read more "From a Phishing Page to a Possible Threat Actor"
Many security researchers, professional cybersecurity analysts and cybsec organizations realized great analyses on DiskKill (HermeticWiper), some of my favorite are HERE, HERE and HERE. Today what I’d like to do, is to focus on specific HermeticWiper characteristics and looking for similarities (or differences) to another similar (and well known) cyber attack happened in Ukraine few […]Read more "DiskKill/HermeticWiper and NotPetya (Dis)similarities"
APT28, also known as Sofacy Group is an (in)famous threat actor. It is a cyber espionage group believed to have ties to the Russian government. Likely operating since 2007, the group is known to target government, military, and security organizations and it has been characterized as an advanced persistent threat over the past years from […]Read more "APT28 SKINNYBOY: Cheat Sheet"
The ransomware builders remind me old times, where Nukes and Exploiters were freely available on the underground communities, when few clicks were enough to bypass many AV vendors and attackers were activists or single people challenging the system. Nowadays the way the “builders” are developed and the way the criminality is abusing them to generate […]Read more "Paradise Ransomware: The Builder"
On April 2021, one of the most known Ransomware Gang called Babuk, decided to change the way they ask for ransom: no more double extortion, no more file encryption but just data exfiltration and a later announcement in case of no deal with the victim. It’s a nice move forward for a Ransomware Gang that, […]Read more "Babuk Ransomware: The Builder"