Windows MSinfo file (.mof)
.mof file signature | application/octet-stream
Windows MSinfo file
Magic Bytes
Offset 0
FF FE 00 00
Sources: Gary Kessler
All Known Signatures
2 signature variants are documented for .mof files across multiple sources.
| Hex Signature | Offset | Sources |
|---|---|---|
| FF FE 00 00 | 0 | Gary Kessler |
| FF FE 23 00 6C 00 69 00 6E 00 65 00 20 00 31 00 | 0 | Gary Kessler |
Extension
.mof
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .mof files in Python
def is_mof(file_path: str) -> bool:
"""Check if file is a valid MOF by magic bytes."""
signature = bytes([0xFF, 0xFE, 0x00, 0x00])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .mof files in Node.js
function isMOF(buffer: Buffer): boolean {
const signature = Buffer.from([0xFF, 0xFE, 0x00, 0x00]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .mof files in Go
func IsMOF(data []byte) bool {
signature := []byte{0xFF, 0xFE, 0x00, 0x00}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/mof
curl https://filesignature.org/api/v1/mof
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .mof file?
A .mof file is a Windows MSinfo file file. Windows MSinfo file
What are the magic bytes for .mof files?
The magic bytes for Windows MSinfo file files are FF FE 00 00 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .mof file?
To validate a .mof file, read the first bytes of the file and compare them against the known magic bytes (FF FE 00 00) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .mof files?
There is no officially registered MIME type for .mof files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .mof files?
Windows MSinfo file (.mof) 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.