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Malwarebytes Responds to IP 172.21.0.16

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Malwarebytes responds to IP 172.21.0.16 as localhost 127.0.0.1 even though this network subnet is not live in our environment.

If anyone with Malwarebytes 3.6.1 installed, this situation exist.

Please explain this mysterious phenomenon.

 

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Can you elaborate on what you mean please? Where are you seeing Malwarebytes reach out to that IP address?

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If you ping 172.21.0.16 or https://172.21.0.16, Malwarebytes traps this address as a trojan even though subnet 172.21.0.0 is not active.

Try it yourself if you have up-to-date 3.6.1 installed and you will see what I mean.

 

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Ahh, sorry I see what you're saying. This block is being removed from Malwarebytes.

The reason you got the block even though nothing was there, is because Malwarebytes doesn't check once the connection is made, it blocks the connection entirely. So if the address you're going to is blocked, we don't check if it exists, we just block it entirely.

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Just to clearify, Malwarebytes only responds to 172.21.0.16 in the whole subnet of 172.21.0.1 to 172.21.0.255.

It is strange Malwarebytes only responds to 1 address out of 255 addresses.

 

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That 1 IP address was in our list of blocked addresses, which is why only that one showed up as blocked. We're removing it though.

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Hey dcollins, is there a Canadian or USA phone number I can call you at to discuss this issue with you.

Please send me the phone number in an email to the address identified in my profile.

Thanks in advance.

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