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EXE/DLL (PE) signature

Signature (hex): 4D 5A (MZ) High risk

A Windows PE executable (EXE/DLL) starts with 4D 5A (MZ, for Mark Zbikowski). Further in it carries the PE\0\0 signature. A file with an MZ signature but a different extension is a clear red flag.

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Signatures verifiable with CyberEscudo's magic-bytes identifier. Educational content.