I read through the list of malwares and didn't see this exact one. In Chrome, it pops up a new tab and freezes the browser, two windows and multiple tabs completely unusable, but in Firefox it opened a new window that was easily closed. It appears that if I don't use Chrome it doesn't run, but I am not sure. I am not seeing computer slowdowns or any other issues. There are no recent software installs, no odd programs etc.
The page that comes up says it's Adwareblocker.com. It has a background that's grey and with a sort of DOS looking text, and a large sidebar with a scroll bar. The text says various things and includes a phone number. It plays a repeating voice message that the computer may be infected, and to call that number. I didn't write that down but it's a long number/out of country, something like 1-814-xxxx, which I think is another country.
I am somewhat experienced, and have run AdwCleaner, Malwarebytes and Win Security Essentials, and no cure. AdwCleaner log shows 'yourtango.com' which I know nothing about. Malwarebytes quarantined 'hijack.host'.
Edited by jerryc, 13 August 2015 - 06:42 AM.