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VisualBASIC application (.vbx)

.vbx file signature | application/octet-stream

Safe

Magic Bytes

Offset: 0
4D 5A

VisualBASIC application

Sources: Gary Kessler

Validation Code

How to validate .vbx files in Python

Python
def is_vbx(file_path: str) -> bool:
    """Check if file is a valid VBX by magic bytes."""
    signature = bytes([0x4D, 0x5A])
    with open(file_path, "rb") as f:
        return f.read(2) == signature

How to validate .vbx files in Node.js

Node.js
function isVBX(buffer: Buffer): boolean {
  const signature = Buffer.from([0x4D, 0x5A]);
  return buffer.subarray(0, 2).equals(signature);
}

How to validate .vbx files in Go

Go
func IsVBX(data []byte) bool {
    signature := []byte{0x4D, 0x5A}
    if len(data) < 2 {
        return false
    }
    return bytes.Equal(data[:2], signature)
}

API Endpoint

GET /api/v1/vbx
curl https://filesignature.org/api/v1/vbx

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .vbx file?

A .vbx file is a VisualBASIC application file. VisualBASIC application

What are the magic bytes for .vbx files?

The magic bytes for VisualBASIC application files are 4D 5A at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .vbx file?

To validate a .vbx file, read the first bytes of the file and compare them against the known magic bytes (4D 5A) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .vbx files?

There is no officially registered MIME type for .vbx files. Systems typically use application/octet-stream as a generic fallback when handling this format.

Is it safe to open .vbx files?

VisualBASIC application (.vbx) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.