Windows Defender detects and removes this threat.

This browser modifier is a program that changes your internet browser without your consent.

Find out more about how and why we identify unwanted software.

NOTE: On March 31, 2017, an incorrect detection for our cloud-based protection for BrowserModifier:Win32/ShopNav was identified and immediately fixed.

To ensure that this issue is remediated, you can do a forced daily update to download your Microsoft antimalware and antispyware software. The fix has been deployed in signature build 1.239.530.0 on March 31, 2017, 2:50 PM PDT.

See Updating your Microsoft antimalware and antispyware software for more information.