If you have used traditional means to remove malware and suddenly you can’t change the proxy server under Internet Options (Control Panel), you can use RogueKiller to remove the proxy.
Symptoms include any browser failing to navigate the internet, proxy errors and proxies such as 127.0.0.1 port 8800.
After trying the control panel and seeing that the proxy under internet options, connections, lan settings and proxy was ‘locked’ by the Administrator (the end user was the administrator), I used netsh winhttp reset proxy, and tried removing the proxy from the registry.
RogueKiller was the only program that recognized the malicious software and removed the proxy.
After an initial scan, you will have to Agree to Terms and then scan your computer. Before removing the items, always review each tab and only hit delete on items that are malicious.
Note: Always backup your computer