Shelter

Shelter Shelter is a completely weaponized sleep obfuscation technique that allows to fully encrypt your in-memory payload making an extensive use of ROP. This crate comes with the following characteristics: AES-128 encryption. Whole PE encryption capability. Removal of execution permission durin...

pe-sieve

Intro PE-sieve is a tool that helps to detect malware running on the system, as well as to collect the potentially malicious material for further analysis. Recognizes and dumps variety of implants within the scanned process: replaced/injected PEs, shellcodes, hooks, and other in-memory patches...

Unwinder

Content SilentMoonWalk Description Credits Usage callfunction! macro indirectsyscall! macro Parameter passing Examples Calling kernel32.dll!Sleep Calling kernel32.dll!OpenProcess Calling NtDelayExecution as indirect syscall Concatenate macro calls Considerations Initial frame PoC Stack replacemen...

NimicStack

NimicStack NimicStack is the pure Nim implementation of Call Stack Spoofing technique to mimic legitimate programs. Whole project is based on the PoC shared by WithSecure Labs Compilation You can directly compile the source code with the following command: nim c -d=mingw --app=console --cpu=amd64...

CallStackMasker

CallStackMasker This repository demonstrates a PoC technique for dynamically spoofing call stacks using timers. Prior to our implant sleeping, we can queue up timers to overwrite its call stack with a fake one and then restore the original before resuming execution. Hence, in the same way we can...

LazyHook

Overview LazyHook is a stealthy API hooking framework that bypasses Host Intrusion Prevention Systems HIPS through call stack spoofing. By leveraging CPU-level hardware breakpoints and Vectored Exception Handling, it executes arbitrary code as if it originated from trusted, Microsoft-signed...

CallStackSpoofer

CallStackSpoofer This repository demonstrates a PoC implementation to spoof arbitrary call stacks when making system calls. For a full technical walkthrough please see the accompanying blog post here: https://labs.withsecure.com/blog/spoofing-call-stacks-to-confuse-edrs. By default it contains...

New Malware Loaders Use Call Stack Spoofing, GitHub C2, and .NET Reactor for Stealth

Cybersecurity researchers have discovered an updated version of a malware loader called Hijack Loader that implements new features to evade detection and establish persistence on compromised systems. "Hijack Loader released a new module that implements call stack spoofing to hide the origin of...