1) Open HiJackThis.
2) Click on "Do a system scan only"
3) After end of scanning check following records:
O1 - Hosts: 127.0.0.1 down.baidu2016.com
O1 - Hosts: 127.0.0.1 123.sogou.com
O1 - Hosts: 127.0.0.1 www.czzsyzgm.com
O1 - Hosts: 127.0.0.1 www.czzsyzxl.com
O1 - Hosts: 127.0.0.1 down.baidu2016.com
O1 - Hosts: 127.0.0.1 123.sogou.com
O1 - Hosts: 127.0.0.1 www.czzsyzgm.com
O1 - Hosts: 127....