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Digital signatures.

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Do you mean check if the program is signed? If so, yes, it's one of the many pieces of information we use to identify whether or not something is malicious.

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Thank you very much for your reply. But it seems to me that you are missing something as there are versions of HMPA that are pirated and are not detected by mbam. I don't know if I should detect them but I know they are illegitimate. I attach a virustotal link. Thank you very much again. Best regards.



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Ahh I see what you mean now, you mean do we detect a file that has an invalid signature as a threat. The answer is no. This would require keeping a database of known good files with their signature to compare against, which requires signature updating, and is an old way of validating threats. In the example above, anytime HitmanPro released a new binary, we'd have to download it, verify the fingerprint thumbnail, and then keep track of that. Instead we rely on our other algorithms for detection, which already incorporate signature validation, and allow us to detect a lot of these threats without requiring new updates everytime someone releases a new binary

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Thank you very much for the detailed explanation. We can give the subject as solved. Thank you again. Greetings.

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Working with Certificates and "trusting" that which is signed, is a function of the OS.  If one is worried, lock down the OS specifically to reduce the trust of sites, executable binaries and data files that fail OCSP verification via a CA.


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Just to add, Malwarebytes also checks many items for fake/spoofed digital signatures, however this is generally only for the purpose of detecting malware such as when a Trojan attempting to pose as a legitimate digitally signed Microsoft OS file tries to infiltrate the system.

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