See the same fictional program retain its name and apparent purpose while its conceptual internal structure and execution route visibly change. No code is executed or files are accessed.
Safe educational model
This is a synthetic file model, not a real executable-format diagram. Every state is fictional, local, browser-only, deterministic, and reversible. No visitor files, uploads, network requests, binaries, parsing, modification, or executable code are used.
MUSEUM.EXE · LAB COPY
Forensic dissection bench
SYNTHETIC FILE MODELNO CODE EXECUTED
Returns MUSEUM.EXE to clean and clears every fictional trace.
Historical context
File-infecting viruses became an important malware category during the DOS and early personal-computing era. Historical names including Jerusalem and Cascade are often discussed in that context; later families such as Sality show that the category continued to evolve.
This visual is intentionally not an exact reconstruction of any one virus or executable format. It teaches only the high-level defensive idea that a program’s internal structure and conceptual route can differ while its name and apparent purpose remain familiar.