StyleSmuggler: on-disk vs in-memory process image hash mismatch

Arnold Chan@slaz

•updated Sep 6, 2026•0•0•0

Detects a discrepancy between the SHA256 hash of a running process image (via /proc/<pid>/exe on Linux) and the hash of the corresponding binary file on disk. This behavior is indicative of process memory manipulation, such as fileless execution or binary replacement, where the code currently running in memory does not match the original file on disk.