EXE File: Windows Programs and File Inspection

Quick facts

Extension

.exe

Format

Windows Executable File

Category

system

MIME type

Unknown

Standard / developer

Microsoft

Open with

Windows (trusted applications only)

What is EXE?

Modern Windows executables commonly use Microsoft’s Portable Executable (PE) structure, with headers describing their machine type and image layout. This guide covers Windows PE applications. A filename ending in .exe does not prove that the file is a valid Windows program or safe to run.

How to open EXE

Running an executable starts program code. Header or signature inspection does not establish that the program is safe.

Common uses and compatibility

• Distribute executable Windows applications for a particular machine architecture.
• Inspect executable image headers and other binary information with developer tools.

Things to check

• Matching a PE signature establishes a structure clue, not whether a program is trustworthy.
• Signature and version inspection are separate from a malware verdict. Sigcheck also has optional online-check and upload features.

Advanced inspection

These developer and command-line workflows inspect structure or metadata. They are not the default way most people open the file.

Technical details

Signature

For a PE image, 50 45 00 00 at the offset stored at 0x3C in the DOS stub; this is not a fixed-offset or safety test

Encoding

Unknown

Container

Portable Executable (PE) image for the Windows executable scope of this guide

Compression

Unknown

Microsoft Portable Executable format

How to open an EXE file

For a trusted Windows application, follow its publisher’s installation or launch instructions and confirm the supported Windows version and architecture. If you only need to identify a file, inspect it instead of running it.

Sources: Microsoft: Portable Executable format · Microsoft Sysinternals: Sigcheck

How can I inspect an EXE without launching it?

Microsoft provides tools for reading binary metadata and signature details. These workflows inspect the target rather than start its application code. They require the inspection tool to be installed separately.

1. Preserve the original and record where the file came from.
2. Use Sigcheck for version and signature information, or DUMPBIN from a Visual Studio developer command prompt for binary headers.
3. Compare the publisher and machine information with the software you intended to obtain. A matching name or signature is not a guarantee of safe behavior.

Sources: Microsoft: DUMPBIN reference · Microsoft Sysinternals: Sigcheck

What does the PE header tell me?

The header records a target machine type and executable image information. Its PE signature is found using an offset stored in the DOS stub, rather than at one fixed position for every file.

Sources: Microsoft: Portable Executable format

Does Sigcheck upload my file?

Sigcheck has optional VirusTotal lookup and upload features. Review its switches before use and avoid those options when you intend to inspect a private file locally. Local metadata inspection is not an antivirus scan.

Sources: Microsoft Sysinternals: Sigcheck

Can I convert EXE to a document by renaming it?

Changing the suffix does not translate executable code into a PDF, image or source file. Obtain the intended document or a supported export from the publisher instead.

Sources: Microsoft: Portable Executable format

Related formats

• VBScript File

  A VBScript source file requires a script host, while a Windows PE image has executable binary headers.

• Windows Shortcut File

  A Windows shortcut can reference a program but is a different file structure.

• Python Source File

  Python source needs an interpreter; renaming it does not create a Windows executable.