A signed kernel driver is one of the most powerful execution primitives available on Windows. Once loaded, it operates with unrestricted access to memory, processes, filesystems, and network traffic. wskmon.sys takes full advantage of that position. Rather than acting...
RegPhantom Backdoor Threat Analysis
Executive Summary This report analyzes RegPhantom, a stealthy Windows kernel rootkit designed to give attackers code execution in kernel mode while leaving very little visible evidence behind. The malware abuses the Windows registry as a covert trigger mechanism: a...
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...
APT Detection is About Metadata
People often ask me, why we changed the name of our scanner from "IOC" to "APT" scanner and if we did that only for marketing reasons. But don't worry, this blog post is just as little a sales pitch as it is an attempt to create a new product class. I'll show you why...
Howto detect Ebury SSH Backdoor
Die folgende Yara Signatur kann für die Erkennung der Ebury SSH Backdoor verwendet werden. rule Ebury_SSHD_Malware_Linux { meta: description = "Ebury Malware" author = "Florian Roth" hash = "4a332ea231df95ba813a5914660979a2" strings: $s0 = "keyctl_set_reqkey_keyring"...


