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    Windows 10 Defender Won't Start After Malware or Ransomware

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    defender anti-virus windows windows 10 malware ransomware
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    • scottalanmillerS
      scottalanmiller @DustinB3403
      last edited by

      @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

      I would think that Windows 10 Defender should continue working during and after malware or ransomware. Rather than just giving up and not operating.

      No application keeps working once it has been disabled.

      DustinB3403D 1 Reply Last reply Reply Quote 0
      • DustinB3403D
        DustinB3403 @scottalanmiller
        last edited by

        @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

        @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

        I would think that Windows 10 Defender should continue working during and after malware or ransomware. Rather than just giving up and not operating.

        No application keeps working once it has been disabled.

        Nothing on the computer works if Defender is disabled? I've not seen that before.

        scottalanmillerS 1 Reply Last reply Reply Quote 0
        • scottalanmillerS
          scottalanmiller @DustinB3403
          last edited by

          @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

          @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

          @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

          I would think that Windows 10 Defender should continue working during and after malware or ransomware. Rather than just giving up and not operating.

          No application keeps working once it has been disabled.

          Nothing on the computer works if Defender is disabled? I've not seen that before.

          "Application" is the antecedent. Not "Defender."

          DashrenderD 1 Reply Last reply Reply Quote 0
          • DashrenderD
            Dashrender @scottalanmiller
            last edited by

            @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

            @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

            @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

            @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

            I would think that Windows 10 Defender should continue working during and after malware or ransomware. Rather than just giving up and not operating.

            No application keeps working once it has been disabled.

            Nothing on the computer works if Defender is disabled? I've not seen that before.

            "Application" is the antecedent. Not "Defender."

            i.e. the ransomware disabled Defender

            scottalanmillerS 1 Reply Last reply Reply Quote 0
            • scottalanmillerS
              scottalanmiller @Dashrender
              last edited by

              @Dashrender said in Windows 10 Defender Won't Start After Malware or Ransomware:

              @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

              @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

              @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

              @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

              I would think that Windows 10 Defender should continue working during and after malware or ransomware. Rather than just giving up and not operating.

              No application keeps working once it has been disabled.

              Nothing on the computer works if Defender is disabled? I've not seen that before.

              "Application" is the antecedent. Not "Defender."

              i.e. the ransomware disabled Defender

              Or Sophos did. Hard to tell. We saw the same disablement where there was no infection.

              dbeatoD 1 Reply Last reply Reply Quote 0
              • DanpD
                Danp @DustinB3403
                last edited by

                @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                Also I highly recommend Cybereason RansomFree

                Product is no longer developed or supported.

                RojoLocoR 1 Reply Last reply Reply Quote 0
                • dbeatoD
                  dbeato @scottalanmiller
                  last edited by

                  @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                  @Dashrender said in Windows 10 Defender Won't Start After Malware or Ransomware:

                  @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                  @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                  @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                  @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                  I would think that Windows 10 Defender should continue working during and after malware or ransomware. Rather than just giving up and not operating.

                  No application keeps working once it has been disabled.

                  Nothing on the computer works if Defender is disabled? I've not seen that before.

                  "Application" is the antecedent. Not "Defender."

                  i.e. the ransomware disabled Defender

                  Or Sophos did. Hard to tell. We saw the same disablement where there was no infection.

                  What version of Sophos? and did it have Intercept X?

                  scottalanmillerS 1 Reply Last reply Reply Quote 0
                  • scottalanmillerS
                    scottalanmiller @dbeato
                    last edited by

                    @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                    @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                    @Dashrender said in Windows 10 Defender Won't Start After Malware or Ransomware:

                    @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                    @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                    @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                    @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                    I would think that Windows 10 Defender should continue working during and after malware or ransomware. Rather than just giving up and not operating.

                    No application keeps working once it has been disabled.

                    Nothing on the computer works if Defender is disabled? I've not seen that before.

                    "Application" is the antecedent. Not "Defender."

                    i.e. the ransomware disabled Defender

                    Or Sophos did. Hard to tell. We saw the same disablement where there was no infection.

                    What version of Sophos? and did it have Intercept X?

                    Didn't check, but probably older. We were just removing it.

                    dbeatoD 1 Reply Last reply Reply Quote 0
                    • RojoLocoR
                      RojoLoco @Danp
                      last edited by

                      @Danp said in Windows 10 Defender Won't Start After Malware or Ransomware:

                      @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                      Also I highly recommend Cybereason RansomFree

                      Product is no longer developed or supported.

                      My installs keep getting updates... Got any confirmation of this?

                      black3dynamiteB DanpD 2 Replies Last reply Reply Quote 0
                      • black3dynamiteB
                        black3dynamite @RojoLoco
                        last edited by

                        @RojoLoco said in Windows 10 Defender Won't Start After Malware or Ransomware:

                        @Danp said in Windows 10 Defender Won't Start After Malware or Ransomware:

                        @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                        Also I highly recommend Cybereason RansomFree

                        Product is no longer developed or supported.

                        My installs keep getting updates... Got any confirmation of this?

                        https://www.cybereason.com/hubfs/ransomfree-EOL-message.pdf

                        1 Reply Last reply Reply Quote 1
                        • DanpD
                          Danp @RojoLoco
                          last edited by

                          @RojoLoco Click the link and read for yourself. Also this -- https://www.cybereason.com/hubfs/ransomfree-EOL-message.pdf

                          RojoLocoR 1 Reply Last reply Reply Quote 3
                          • dbeatoD
                            dbeato @scottalanmiller
                            last edited by

                            @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                            @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                            @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                            @Dashrender said in Windows 10 Defender Won't Start After Malware or Ransomware:

                            @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                            @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                            @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                            @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                            I would think that Windows 10 Defender should continue working during and after malware or ransomware. Rather than just giving up and not operating.

                            No application keeps working once it has been disabled.

                            Nothing on the computer works if Defender is disabled? I've not seen that before.

                            "Application" is the antecedent. Not "Defender."

                            i.e. the ransomware disabled Defender

                            Or Sophos did. Hard to tell. We saw the same disablement where there was no infection.

                            What version of Sophos? and did it have Intercept X?

                            Didn't check, but probably older. We were just removing it.

                            I was just asking as we use Sophos and we have seen advert some ransomware or other infections pretty much all the time. So it would be cool to know which ransomware variant was causing this.

                            scottalanmillerS 1 Reply Last reply Reply Quote 0
                            • scottalanmillerS
                              scottalanmiller @dbeato
                              last edited by

                              @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                              @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                              @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                              @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                              @Dashrender said in Windows 10 Defender Won't Start After Malware or Ransomware:

                              @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                              @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                              @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                              @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                              I would think that Windows 10 Defender should continue working during and after malware or ransomware. Rather than just giving up and not operating.

                              No application keeps working once it has been disabled.

                              Nothing on the computer works if Defender is disabled? I've not seen that before.

                              "Application" is the antecedent. Not "Defender."

                              i.e. the ransomware disabled Defender

                              Or Sophos did. Hard to tell. We saw the same disablement where there was no infection.

                              What version of Sophos? and did it have Intercept X?

                              Didn't check, but probably older. We were just removing it.

                              I was just asking as we use Sophos and we have seen advert some ransomware or other infections pretty much all the time. So it would be cool to know which ransomware variant was causing this.

                              Sophos is the primary thing causing this issue for us. It crippled Windows so that even if you removed it, other AV would keep breaking. Really makes me wary of Sophos.

                              dbeatoD 1 Reply Last reply Reply Quote 0
                              • dbeatoD
                                dbeato @scottalanmiller
                                last edited by

                                @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                @Dashrender said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                I would think that Windows 10 Defender should continue working during and after malware or ransomware. Rather than just giving up and not operating.

                                No application keeps working once it has been disabled.

                                Nothing on the computer works if Defender is disabled? I've not seen that before.

                                "Application" is the antecedent. Not "Defender."

                                i.e. the ransomware disabled Defender

                                Or Sophos did. Hard to tell. We saw the same disablement where there was no infection.

                                What version of Sophos? and did it have Intercept X?

                                Didn't check, but probably older. We were just removing it.

                                I was just asking as we use Sophos and we have seen advert some ransomware or other infections pretty much all the time. So it would be cool to know which ransomware variant was causing this.

                                Sophos is the primary thing causing this issue for us. It crippled Windows so that even if you removed it, other AV would keep breaking. Really makes me wary of Sophos.

                                There is a removal tool for this... AV are meant to not be tampered with which is probably what Sophos did. That is one thing that Sophos does, there is no way to properly uninstall it without a tamper protection password or removal.

                                scottalanmillerS 1 Reply Last reply Reply Quote 1
                                • scottalanmillerS
                                  scottalanmiller @dbeato
                                  last edited by

                                  @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                  @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                  @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                  @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                  @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                  @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                  @Dashrender said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                  @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                  @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                  @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                  @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                  I would think that Windows 10 Defender should continue working during and after malware or ransomware. Rather than just giving up and not operating.

                                  No application keeps working once it has been disabled.

                                  Nothing on the computer works if Defender is disabled? I've not seen that before.

                                  "Application" is the antecedent. Not "Defender."

                                  i.e. the ransomware disabled Defender

                                  Or Sophos did. Hard to tell. We saw the same disablement where there was no infection.

                                  What version of Sophos? and did it have Intercept X?

                                  Didn't check, but probably older. We were just removing it.

                                  I was just asking as we use Sophos and we have seen advert some ransomware or other infections pretty much all the time. So it would be cool to know which ransomware variant was causing this.

                                  Sophos is the primary thing causing this issue for us. It crippled Windows so that even if you removed it, other AV would keep breaking. Really makes me wary of Sophos.

                                  There is a removal tool for this... AV are meant to not be tampered with which is probably what Sophos did. That is one thing that Sophos does, there is no way to properly uninstall it without a tamper protection password or removal.

                                  That's how we describe ransomware!

                                  Getting Sophos to stop scanning isn't an issue, it's getting Sophos to allow legitimate scanning is the issue!

                                  dbeatoD 1 Reply Last reply Reply Quote 0
                                  • dbeatoD
                                    dbeato @scottalanmiller
                                    last edited by

                                    @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                    @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                    @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                    @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                    @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                    @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                    @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                    @Dashrender said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                    @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                    @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                    @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                    @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                    I would think that Windows 10 Defender should continue working during and after malware or ransomware. Rather than just giving up and not operating.

                                    No application keeps working once it has been disabled.

                                    Nothing on the computer works if Defender is disabled? I've not seen that before.

                                    "Application" is the antecedent. Not "Defender."

                                    i.e. the ransomware disabled Defender

                                    Or Sophos did. Hard to tell. We saw the same disablement where there was no infection.

                                    What version of Sophos? and did it have Intercept X?

                                    Didn't check, but probably older. We were just removing it.

                                    I was just asking as we use Sophos and we have seen advert some ransomware or other infections pretty much all the time. So it would be cool to know which ransomware variant was causing this.

                                    Sophos is the primary thing causing this issue for us. It crippled Windows so that even if you removed it, other AV would keep breaking. Really makes me wary of Sophos.

                                    There is a removal tool for this... AV are meant to not be tampered with which is probably what Sophos did. That is one thing that Sophos does, there is no way to properly uninstall it without a tamper protection password or removal.

                                    That's how we describe ransomware!

                                    Getting Sophos to stop scanning isn't an issue, it's getting Sophos to allow legitimate scanning is the issue!

                                    I can see where it resembles the behavior of a ransomware, same will be for Webroot, they are extremely hard to remove unless you go to SafeMode to remove them. That is one of the ways the combat said ransomware or Malware.

                                    scottalanmillerS 1 Reply Last reply Reply Quote 0
                                    • scottalanmillerS
                                      scottalanmiller @dbeato
                                      last edited by

                                      @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                      @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                      @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                      @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                      @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                      @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                      @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                      @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                      @Dashrender said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                      @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                      @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                      @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                      @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                      I would think that Windows 10 Defender should continue working during and after malware or ransomware. Rather than just giving up and not operating.

                                      No application keeps working once it has been disabled.

                                      Nothing on the computer works if Defender is disabled? I've not seen that before.

                                      "Application" is the antecedent. Not "Defender."

                                      i.e. the ransomware disabled Defender

                                      Or Sophos did. Hard to tell. We saw the same disablement where there was no infection.

                                      What version of Sophos? and did it have Intercept X?

                                      Didn't check, but probably older. We were just removing it.

                                      I was just asking as we use Sophos and we have seen advert some ransomware or other infections pretty much all the time. So it would be cool to know which ransomware variant was causing this.

                                      Sophos is the primary thing causing this issue for us. It crippled Windows so that even if you removed it, other AV would keep breaking. Really makes me wary of Sophos.

                                      There is a removal tool for this... AV are meant to not be tampered with which is probably what Sophos did. That is one thing that Sophos does, there is no way to properly uninstall it without a tamper protection password or removal.

                                      That's how we describe ransomware!

                                      Getting Sophos to stop scanning isn't an issue, it's getting Sophos to allow legitimate scanning is the issue!

                                      I can see where it resembles the behavior of a ransomware, same will be for Webroot, they are extremely hard to remove unless you go to SafeMode to remove them. That is one of the ways the combat said ransomware or Malware.

                                      Yeah, except the Sophos got infected as one of our "ground zero" machines, and it looks like Sophos' behaviour might have been a contributing factor to the broader spread of it.

                                      dbeatoD 1 Reply Last reply Reply Quote 0
                                      • dbeatoD
                                        dbeato @scottalanmiller
                                        last edited by dbeato

                                        @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                        @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                        @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                        @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                        @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                        @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                        @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                        @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                        @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                        @Dashrender said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                        @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                        @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                        @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                        @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                        I would think that Windows 10 Defender should continue working during and after malware or ransomware. Rather than just giving up and not operating.

                                        No application keeps working once it has been disabled.

                                        Nothing on the computer works if Defender is disabled? I've not seen that before.

                                        "Application" is the antecedent. Not "Defender."

                                        i.e. the ransomware disabled Defender

                                        Or Sophos did. Hard to tell. We saw the same disablement where there was no infection.

                                        What version of Sophos? and did it have Intercept X?

                                        Didn't check, but probably older. We were just removing it.

                                        I was just asking as we use Sophos and we have seen advert some ransomware or other infections pretty much all the time. So it would be cool to know which ransomware variant was causing this.

                                        Sophos is the primary thing causing this issue for us. It crippled Windows so that even if you removed it, other AV would keep breaking. Really makes me wary of Sophos.

                                        There is a removal tool for this... AV are meant to not be tampered with which is probably what Sophos did. That is one thing that Sophos does, there is no way to properly uninstall it without a tamper protection password or removal.

                                        That's how we describe ransomware!

                                        Getting Sophos to stop scanning isn't an issue, it's getting Sophos to allow legitimate scanning is the issue!

                                        I can see where it resembles the behavior of a ransomware, same will be for Webroot, they are extremely hard to remove unless you go to SafeMode to remove them. That is one of the ways the combat said ransomware or Malware.

                                        Yeah, except the Sophos got infected as one of our "ground zero" machines, and it looks like Sophos' behaviour might have been a contributing factor to the broader spread of it.

                                        Okay, again this your scenario in which I don't know what is going on. It is hard to see Sophos spreading this. but maybe you mean it allowed the ransomware to be spread because it did not do anything, correct?

                                        scottalanmillerS 1 Reply Last reply Reply Quote 0
                                        • scottalanmillerS
                                          scottalanmiller @dbeato
                                          last edited by

                                          @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                          @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                          @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                          @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                          @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                          @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                          @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                          @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                          @dbeato said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                          @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                          @Dashrender said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                          @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                          @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                          @scottalanmiller said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                          @DustinB3403 said in Windows 10 Defender Won't Start After Malware or Ransomware:

                                          I would think that Windows 10 Defender should continue working during and after malware or ransomware. Rather than just giving up and not operating.

                                          No application keeps working once it has been disabled.

                                          Nothing on the computer works if Defender is disabled? I've not seen that before.

                                          "Application" is the antecedent. Not "Defender."

                                          i.e. the ransomware disabled Defender

                                          Or Sophos did. Hard to tell. We saw the same disablement where there was no infection.

                                          What version of Sophos? and did it have Intercept X?

                                          Didn't check, but probably older. We were just removing it.

                                          I was just asking as we use Sophos and we have seen advert some ransomware or other infections pretty much all the time. So it would be cool to know which ransomware variant was causing this.

                                          Sophos is the primary thing causing this issue for us. It crippled Windows so that even if you removed it, other AV would keep breaking. Really makes me wary of Sophos.

                                          There is a removal tool for this... AV are meant to not be tampered with which is probably what Sophos did. That is one thing that Sophos does, there is no way to properly uninstall it without a tamper protection password or removal.

                                          That's how we describe ransomware!

                                          Getting Sophos to stop scanning isn't an issue, it's getting Sophos to allow legitimate scanning is the issue!

                                          I can see where it resembles the behavior of a ransomware, same will be for Webroot, they are extremely hard to remove unless you go to SafeMode to remove them. That is one of the ways the combat said ransomware or Malware.

                                          Yeah, except the Sophos got infected as one of our "ground zero" machines, and it looks like Sophos' behaviour might have been a contributing factor to the broader spread of it.

                                          Okay, again this your scenario in which I don't know what is going on. It is hard to see Sophos spreading this. but maybe you mean allowed it to be spread because it did not do anything, correct?

                                          Right. It looks like because Sophos appears to have caused the legitimate antivirus to turn on, then immediately disable when the admin looked away, they thought that they were protected, but Sophos was regularly disabling the AV putting them at risk.

                                          1 Reply Last reply Reply Quote 0
                                          • scottalanmillerS
                                            scottalanmiller
                                            last edited by

                                            On its own, where Sophos was the AV that was supposed to be running, it failed to stop the virus. That's not a huge thing, it's not the only AV that failed on that. No AV is perfect and they depend on the OS to be well configured to do their job. But it wasn't successful at protecting even where it was fully installed and running.

                                            dbeatoD PhlipElderP 2 Replies Last reply Reply Quote 0
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