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    Mitigate Ransomware "WannaCry"

    Scheduled Pinned Locked Moved Firewalling
    26 Posts 13 Posters 8.6k Views
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    • jimpJ
      jimp Rebel Alliance Developer Netgate
      last edited by

      They could also sell the killswitch to some places for more $$$

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      • N
        NOYB
        last edited by

        @jimp:

        They could also sell the killswitch to some places for more $$$

        Yup, lots of possibilities.

        What made me think of cyber warfare was a top 20 chart I saw with one particular nation affected way more than any other.  Another thought on cyber warfare could be nation C trying to stoke animosity between nations A and B.

        General public pawns will probably never know much of any of this.  But it is fun to speculate.

        Hmmm.  They would only be able to sell the kill switch once.  Then everyone would have it.  Also, why two kill switches?  Seems to me that may indicate targeting.

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        • N
          NOYB
          last edited by

          The simple reason so many companies were hit by the WannaCry 2.0 ransomware

          Daniel Howley
          Technology Editor

          Yahoo FinanceMay 16, 2017

          https://finance.yahoo.com/news/simple-reason-many-companies-hit-wannacry-2-0-ransomware-192836300.html

          Excuses, excuses.  It's their job/responsibility to operate a secure environment.  If they are unable or unwilling to allocate the necessary resources to accomplish that then it is their fault, and stupidity for taking the associated risk without being prepared to deal with the possible consequences.

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          • Z
            zoro_2009
            last edited by

            <interrup>Whats a killswitch ?</interrup>

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            • jimpJ
              jimp Rebel Alliance Developer Netgate
              last edited by

              @zoro_2009:

              <interrup>Whats a killswitch ?</interrup>

              It's a condition that, if met, causes a program to stop executing.

              In this case, the malware checks to see if one of the domains is live (attempts an HTTP connection to it). If this succeeds, then it does not attempt to spread itself further.

              So by making sure the malware can access these "killswitch" domains, you effectively stop it from infecting more machines, giving you more time to get your systems patched/configured/etc to properly prevent them from being exploited, and to clean up existing infections.

              Remember: Upvote with the 👍 button for any user/post you find to be helpful, informative, or deserving of recognition!

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              • F
                fredfox_uk
                last edited by

                For a really good explanation of the killswitch take a read of this https://www.malwaretech.com/2017/05/how-to-accidentally-stop-a-global-cyber-attacks.html

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                • Z
                  zoro_2009
                  last edited by

                  thanks

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                  • M
                    Mr. Jingles
                    last edited by

                    @jimp:

                    It does not require any specific response, only that it can make an HTTP request to those domains.

                    []
                    DO NOT BLOCK THESE DOMAINS, blocking solves nothing. It is not a C&C server, but a killswitch.

                    Dear Jim,

                    Could I ask why blocking the domain doesn't solve anything? In my humble view of the world, if it can't connect to it because it's blocked, it can't make a HTTP request?

                    Thank you :)

                    6 and a half billion people know that they are stupid, agressive, lower life forms.

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                    • DerelictD
                      Derelict LAYER 8 Netgate
                      last edited by

                      How about you read jimp's post again.

                      Chattanooga, Tennessee, USA
                      A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                      DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                      Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                      • M
                        mrgoogleip
                        last edited by

                        I know some people that pay bitcoins for his information  :'(

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                        • johnpozJ
                          johnpoz LAYER 8 Global Moderator
                          last edited by

                          Exactly - pay attention to this part

                          " It is not a C&C server, but a killswitch."

                          This is why do not block the domain… But bring the domains online and let it make a http connection.

                          An intelligent man is sometimes forced to be drunk to spend time with his fools
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                          Please don't Chat/PM me for help, unless mod related
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