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How to know if an exe file is a virus or not?


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#1 RedRay

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Posted 17 December 2013 - 04:40 AM

I tried to install something that I don't completely trust(if you must know its Minecraft Force Op).  When i tried to launch it, it said "Not a valid win32 application".  After a bit of research, I know that if that messages pops up then its either a virus or a corrupt file.  Some trusted files say the same thing and I don't know if its infected or not.  Is there a place where I can give the file to see a report about it?



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#2 Animal

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Posted 17 December 2013 - 08:47 AM

You can upload it to either http://virusscan.jotti.org/en or https://www.virustotal.com/ or both if you wish.

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#3 quietman7

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Posted 17 December 2013 - 09:08 AM


Are you running a 64-bit OS or 32-bit?

"Not a valid Win32 application" is a common error message received when attempting to run or install a 64-bit application on a 32-bit operating system.

Although this error message can also be indicative of malware infection (i.e. W32.Beagle/W32.Bagle worm, W32.Sonic.Worm, etc.) in many cases it is do to downloading and attempting to use a 64-bit installer on a 32-bit machine.

If the above is not the case, then submitting the file for analysis as Animal suggests is the way to proceed.
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#4 slgrieb

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Posted 19 December 2013 - 11:14 PM

The most likely explanation is a corrupt download. If the file were malware, it would probably install and run just fine. Another possible source for the error could be that the program requires elevated permission (Run As Administrator) to execute.


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#5 quietman7

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Posted 20 December 2013 - 08:34 AM

Any if it were malware, there would also be indications (signs of infection) something is wrong.
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