Avoiding Memory Scanners

This research/post describes methods to evade Windows memory scanners and endpoint detection by obfuscating and encrypting in-memory implants. It documents techniques including multi-byte/RC4 encryption via SystemFunction032, secondary-heap encryption, executable masking stubs, ROP and NtContinue-based FOLIAGE context switching, replacing Sleep with WaitForSingleObject, and return-address spoofing, and it introduces AceLdr — an open-source reflective loader implementing these techniques to bypass scanners like YARA, PE-sieve, Moneta, and BeaconHunter.