System Security Removal

Ok so my sister just got off the computer and somehow System Security malware is installed..

I'm aware that there is this guide out there

But this guide doesn't help seeing as how I can't install malwarebytes because the malware won't let me, saying its infected..

so, what to do?

Please download Hijack This from here:
http://www.sendspace.com/pro/dl/932rpd

Run and do a system scan with logfile, copy and paste the log back here.

Hey!

I have the same problem, but the thing is, I can't open anything except explorer (by clicking on their "Support" button). When I try to start it, it sometime opens for a sec, but then shut down immediatly... What to do, there's got to be another way than formatting?! Thx!

PS: My computer often just freeze at start and I can't do anything, I can do some stuff when I'm lucky... :con:

Do you have a USB stick you can use to transfer the file from another machine?

Yeah! And I have another computer that I can use to download anything

Okay, use the other machine to download Hijack This from this link:
http://www.sendspace.com/pro/dl/932rpd

I have been able to download it on my computer, the thing is, I can't execute it, it shuts down, with a little error message saying the file is infected...

The winlogon.exe file?

Yes! I can open it for like half a second, but then it just shut down...

Hello.
Your log was pushed back because of the flood of traffic, still need help?

No thx, I formated my comp... Couldn't get it off