PUP.Optional.DNSUnlocker is Malwarebytes’ detection name for a family of adware programs that change the victim’s DNS settings on Windows systems.
PUP.Optional.DNSUnlocker redirects users to sites of its choosing by changing the DNS settings on the user’s machine. The potentially unwanted programs (PUPs) in this family are usually included in bundlers.
Malwarebytes protects users from PUP.Optional.DNSUnlocker by using real-time protection.
Malwarebytes blocks PUP.Optional.DNSUnlocker
Malwarebytes can detect and remove PUP.Optional.DNSUnlocker without further user interaction.
In some cases you may be prompted for a second reboot. This is necessary to restore your Internet connection.
Should users wish to keep this program and exclude it from being detected in future scans, they can add the program to the exclusions list. Here’s how to do it.
If you want to allow the program to connect to the Internet, for example to fetch updates, also add an exclusion of the type Allow an application to connect to the internet and use the Browse button to select the file you wish to grant access.
You may see this type of entries in FRST logs:
Tcpip\..\Interfaces\{GUID for the internet connection}: [NameServer] 82.163.143.153,82.163.142.155
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