---
type: lookup
id: grp-50-4d-43-43
asset: file-format-signatures
title: "50 4D 43 43 — File format magic numbers"
sources:
  - https://en.wikipedia.org/wiki/List_of_file_signatures
source_quote: "3 64 62 66 | sdbf | 8 | sdb | Windows customized database | 50 4D 43 43 | PMCC | 0 | grp | Windows 3.x <https://en.wikipedia.org/wiki/Program_Manager> Program Manager Program Group file format | 4B 43 4D 53 | KCMS | 0 | icm | <https://en.wikipedia.org/wiki/ICC_profile> ICC profile | 72 65 67 66 | regf | 0 | dat hiv | <https://en.wikipedia.org/wiki/Windows_Re"
generated: true
verified: false
harvested: 2026-08-03
stale_after: 2027-08-03
hex_signature: "50 4D 43 43"
offset: "50"
extension: "grp"
format: "Windows 3.x Program Manager Program Group file format"
unverified_fields: format
---
**Hex signature:** 50 4D 43 43

**Offset:** 50

**Extension:** grp

**Format:** Windows 3.x Program Manager Program Group file format

> 3 64 62 66 | sdbf | 8 | sdb | Windows customized database | 50 4D 43 43 | PMCC | 0 | grp | Windows 3.x <https://en.wikipedia.org/wiki/Program_Manager> Program Manager Program Group file format | 4B 43 4D 53 | KCMS | 0 | icm | <https://en.wikipedia.org/wiki/ICC_profile> ICC profile | 72 65 67 66 | regf | 0 | dat hiv | <https://en.wikipedia.org/wiki/Windows_Re

Source: <https://en.wikipedia.org/wiki/List_of_file_signatures>