TENCENT QQ Trojan on Mac

I did not do a clean install. I followed your advice by zeroing my hard drive. Now things seem to be fine. It is an unfortunate result for a trojan since I lost just about everything except documents and music which I had backed, but I guess I can look at it as I'm starting fresh with a new computer. If anyone finds any other information about this trojan, please post. I'm the only one who got it for the Mac, but the trojan is on almost all of our study abroad students' PCs.

Sorry- I am re-opening the thread. Although I zeroed the drive, the trojan is still very much present and invasive. I did a CLEAN install of Mac OS X. What could be wrong??

It only happens online though. It embeds itself into the site. I brought over VERY VERY little, and inspected it carefully. Literally a handful of documents, and then I used SENUTI for my music, so I didn't actually bring the files over. The only suspicious thing was that there was a document in my documents that did not look familiar. It was HTML and brought me to a screensaver download site. Could this have something to do with it?

Senuti is the reverse of iTunes (hence the name, iTunes backwards). It ***** the music off your iPod and puts them in iTunes. I mention this to affirm that it did not come with my music. I haven't updated my iPod in awhile and it was well before this problem started. Also, my last document back-up was before the problem started.

Sorry for being vague. The exact symptoms are: the machine was running fine until one day I started receiving QQ ads. They are very invasive and could pop up on any website. If they do embed themselves, the website usually stops functioning and you have to quit Safari and start again. As of before my re-install, this was happening on all 3 of my browsers (Safari, Firefox, Camino). Sometimes, sites that I know exist do not load. I need to go back to the site before it, empty the cache, and try again. This usually works.

Another detail that may be useful. Our dorm network (in China) on Thursday began having major problems. Our internet connection became unstable and is still not fixed. Everyone that I've talked to (but all PC users) complained about the start of this problem all on Thursday or Friday. We've been promised by the school that within a week, the network will be fixed and is having major problems right now. Could this be a network issue and something that will go away when the network is fixed? I assumed it was all a coincidence, but maybe not... I only have one other Mac-using friend and he hasn't complained about anything like this yet. Maybe it's not me...

Thanks again for all your support and attention.

That would be comforting, but why aren't the other Mac users affected? I just talked to one more who says he doesn't have it. At the time, I was a Tencent QQ user and used the instant messenger regularly, though, and they do not. The PC users who have the problem were not QQ users.

Thanks so much.

It's very late here in China and I need to go to bed. I will check back tomorrow. Any additional advice or information would be greatly appreciated.

Thanks so much again. I'm glad that the Mac community works so well together (especially considering the "Geniuses" would charge us an arm and a leg per call to guess, too).