Originally posted by abigsmurf
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Or so I thought.
Next time I loaded the netbook up, and clicked on firefox, it started running really slow. I thought I would maybe nip onto avg's website via google to see if there were any updates, to give everything a full, up-to-date scan. To my horror, I got redirected to a load of trash - stopzilla.com or something. I tried again, once more via google's search and link, and got redirected somewhere different. So I tried a malwarebytes link, with a redirect to a shopping page. Every time I went on a computer 'defence' site, I got redirected.
I tried to quit out of firefox, and was met with a mega-freeze. After a while I had to reset the machine, as it hung for ages with no movement. Instead of loading windows up, I was faced with a black screen, apart from a single white cursor flicking on and off in the top left corner of the screen. I reset again, and was faced with the same thing. It didn't even present the Asus load-up screen, just ... nothing.
Eventually I managed to get the netbook to jump straight into BIOS, and found the problem. My primary boot device had been set to Nothing! After resetting it as the HD, I managed to load up in safe mode with networking.
Clicking on firefox in safe mode, I entered google and searched for avg. My jaw dropped when the redirect still happened! Damn thing had infected my machine so bad that it had skanked my safe mode networking. I tried malwarebytes again, and spent hours using Hijack This to examine every startup programme and check for fake entries. Still nothing.
Then I chanced upon something. I went into firefox and entered the avg address directly into the address bar. It worked! No redirect! I tried the malwarebytes website. Success! Then I saw something that had somehow previous eluded my attention. My homepage is google. Just plain old google. Now my homepage was google featuring Mozilla, with a few firefox visuals on the screen. I'd seen this mozilla google before and it was fine, so it was familiar. But I thought it odd that I hadn't set that version of google as my homepage, and yet there it was. Coupled with the google redirects, I decided to search for this term:
'firefox redirect virus'
And there it was. Infected by a rootkit, that seemed to commandeer my google homepage with it's own ghost mozilla google homepage, redirecting anything that threatened it. I grabbed the TDSS Rootkit Removal Tool from Kaspersky, and the brilliant little programme found the rootkit within seconds and smashed it. No problems since.
So firefox hyper skanked me, with a rootkit designed specifically to exploit it.
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