Help, I have some type of Badware-Trojan!!!!

I have a MacBook Pro with OS X Lion 10.7.5 I am not currently running any anti-virus protection and I just enabled the Firewall and other built-in security. i really bought into the "Macs don't get viruses or Trojans" bit. Well, now I know.


As I was searching through my Downloads for a photo, I can across hundreds of porn .jpgs and other files that looked like drafts of websites, random .jpgs of logos for ISO, Banks, etc.etc. It totally freaked me out and I started deleting them and trying to find the source. There were literally thousands and thousands of pics in the hidden folders (maybe 50,000?) they installed on my hard drive. I have a huge HD with lots of memory so I didn't notice any performance issues at all. It looks like they accessed my gmail via IMAP settings and created hidden folders, users and I am trying to get to the access points so this cannot happen again. I regularly change my gmail password and use icloud and gmail on my iPhone. I disabled the Mail access IMAP on my laptop since I think that is how they were getting in. I think I locked it down, but now am really paranoid there is a keyword logger or something. Also, I am pretty new to Mac, so I don't know some the basics like now to get to the root level to delete folders, etc. I looked at my Activity Monitor and not sure what is necessary for the operating system or what might be malware, trojan.

I'm really upset and I use my Mac for my job, so I really need to figure this out. I've contacted Apple support and they are pretty useless.
I went on a deleting spree, but this is some of the info I did save from the .jpgs in my Downloads. How can I be sure I got everything off and it won't happen again? THANK YOU!!!!!!!!!! Mandy

My apple ID >

library >

mail >

V2 >

IMAP - (mygoogleusername here)@imap.gmail.com
[Gmai]l.mbox >

Spam.mbox >

Trash.mbox >

data

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