Hello,
Thank you for posting in Q&A forum.
Actually these files are often legitimate Windows system files, not all unverified Microsoft files are malicious.
You can run a full system scan with any antivirus software to check for any malware. Meanwhile you can check the digital signatures of the files by right-clicking on the file > Properties > Digital Signatures. If the signatures are valid, the files are likely safe.
I hope the information above is helpful.
If you have any questions or concerns, please feel free to let us know.
Best regards,
Jill Zhou
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