Windows 10: Scanning a ISO File and Bootable Anti-Virus

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  1.    18 Dec 2015 #51

    Please reply, wouldn't the ISO have Virus definitions that the latest Anti-Viruses can not detect. Like Viruses that are a different type and can not be detected.
      My ComputerSystem Spec

  2.    18 Dec 2015 #52

    I think it's time we stopped answering MSMPlayz questions - he/she isn't going to be satisfied by any answer provided.
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  3.    18 Dec 2015 #53

    D: I aware this is the last question. PLEASE AFTER ANSWERING THIS LAST ONE.
      My ComputerSystem Spec

  4.    18 Dec 2015 #54


    First - the chance that you have a virus inside an ISO file that you download directly from Microsoft is next to zero. Either Microsoft would have to post the ISO file with the virus already in it (so how much do you trust Microsoft?) or your computer would have to insert the virus after it was downloaded.

    Second - The chance that your computer would insert the virus into the ISO file after downloading is also next to zero. The reason is because the ISO file is an image. It's like a zip file. A virus cannot simply alter the ISO file itself to insert the virus - it would actually have to extract the over 3GB file somewhere, insert the virus into an executable file extracted from the ISO - and then recreate the ISO file from all the files previously extracted. If the virus tried to insert itself directly into the ISO file without extracting everything first all it would do is corrupt the ISO file and cause it to fail to open/extract and you would just get an error that the file could not be opened.

    When you mount or extract an ISO file or burn a DVD/USB/CD from it, it is possible for there to be hidden files. I don't know of any way of making sure that you see every file contained in the ISO. Maybe UltraISO?

    There is no anti-virus/anti-malware program that is going to catch 100% of all viruses/malware.

    So what you are ultimately left with is pretty much trusting the first and second statements that there is very little chance that you are downloading an already infected ISO file from Microsoft and there is very little chance of that ISO file getting infected sitting on your computer - even if your computer is infected itself.

    The way to tell if the ISO file has been changed or is corrupted is to use the program to calculate the SHA1 and/or MD5 sums of the ISO file. Unfortunately, Microsoft does not publish the SHA1 and/or MD5 sums on their websites so you are left with only the option of comparing those values with others that have downloaded the ISO file as well. Many software companies do publish the SHA1 or MD5 value on their download pages, but Microsoft does not.

    If you really, really want to do everything you can to make sure you have a 100% clean Windows 10 image, then buy a read only USB version of Windows directly from Microsoft for $199. Even then I would suspect you would come back and ask us how to verify the USB you received wasn't infected.
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  5. essenbe's Avatar
    Posts : 11,342
    Windows 10 Pro and Windows 10 Pro Insider
       18 Dec 2015 #55

    MSMPlatz, we have 6 pages and 53 posts of you asking questions about viruses in an ISO file. Your questions have been answered in every way possible. You are being overly paranoid about viruses. If you downloaded the ISO from an official Microsoft site, there is no concern about viruses other than any that may be on your computer already. You have been told to scan it if you wish, how to scan it and what to scan it with. All of your questions have been answered, some several times. Enough is enough.
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  6. You's Avatar
    Posts : 615
    Windows 10 Enterprise x64 (build 10586)
       18 Dec 2015 #56

    MSMPlayz said: View Post
    So "You" said, that open it with File Explorer and scan it. Does it have EVERY file that is in the ISO.
    Yes, it does. It mounts the ISO.
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  7.    18 Dec 2015 #57

    Ok, can anyone download the ISO and calculate the SHA or MDA. This is not a question, I can now understand. It's a favour.
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  8.    18 Dec 2015 #58

    Btw, my computer is heavily infected with all types, Trojans, malware, spyware, adware, Boot Sector Virus and a Damaged/Infected BIOS. My BIOS will be easy to fix, reflash after reinstalling Windows.
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  9.    18 Dec 2015 #59

    MSMPlayz said: View Post
    Ok, can anyone download the ISO and calculate the SHA or MDA. This is not a question, I can now understand. It's a favour.
    We would need to know exactly which language, edition, version, architecture and source. For example, Windows 10 (not N and not Single Language), 64-bit only, English-US, downloaded today from Microsoft Tech Bench (or Media Creation Tool).
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  10.    18 Dec 2015 #60

    Media creation tool, both 32 and 64, English uk and just Windows 10 (no N) and ISO.
      My ComputerSystem Spec

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