The Ranzy ransomware operators have learned from their mistakes and adapted quickly after ThunderX decryptors became publicly available.
Resourceful macOS Malware Hides in Named Fork
Threat actors targeting macOS are deploying a new trick to hide payloads and avoid detection thanks to an old technology: the named resource fork.
Moving From Dynamic Emulation of UEFI Modules To Coverage-Guided Fuzzing of UEFI Firmware
In Part 3 of our series on emulating, debugging and fuzzing UEFI modules, we provide a step-by-step guide to making a coverage-guided fuzzer for UEFI code.
Anchor Project for Trickbot Adds ICMP
The team behind Trickbot has been aggressively updating and deploying various modules including Anchor and Bazar Loader targeting high-value targets, including healthcare entities
Misusing msvsmon and the Windows Remote Debugger
The ability to remotely debug an application is a useful feature, but msvsmon.exe has security implications that organizations need to be aware of.
An Inside Look at How Ryuk Evolved Its Encryption and Evasion Techniques
Ryuk’s success is based partly on leveraging other toolkits and vulns, partly on its encryption speed and evasion tricks. We tear it down for a closer look.
Purple Fox EK | New CVEs, Steganography, and Virtualization Added to Attack Flow
New research shows that the Purple Fox exploit kit has added new tricks to its attack flow and continues to target vulnerable versions of Internet Explorer.
Leveraging LD_AUDIT to Beat the Traditional Linux Library Preloading Technique
Abusing LD_PRELOAD to intercept library calls on Linux is a known threat actor technique, but it’s possible to load libaries even before that. Meet LD_AUDIT
Moving From Manual Reverse Engineering of UEFI Modules To Dynamic Emulation of UEFI Firmware
Learn how to emulate, trace, debug, and Reverse Engineer UEFI modules in part 2 of our new blog series on Firmware Security
The FONIX RaaS | New Low-Key Threat with Unnecessary Complexities
FONIX RaaS uses four methods of encryption per file and leads victims (and affiliates) on a merry dance through multiple emails to obtain decryption.