# 58 46 49 52 ?? ?? ?? ?? 33 39 56 4D (little-endian) — File format magic numbers

For 58 46 49 52 ?? ?? ?? ?? 33 39 56 4D (little-endian), offset is 0; extension is XFIR ???? 39VM, recorded from its source on 2026-08-03.

- **Hex signature:** 58 46 49 52 ?? ?? ?? ?? 33 39 56 4D (little-endian) _(unconfirmed — we could not tie this to the quote below)_
- **Offset:** 0 _(unconfirmed — we could not tie this to the quote below)_
- **Extension:** XFIR ???? 39VM

## What the source says

> XFIR ???? 39VM

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-08-03. Review by: 2027-08-03.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).