Trojan.Maljava - Keeps coming back
Hello, and as my title states I have a sticky problem. I've read up on this trojan and it seems its a keylogger(Which doesn't help my paranoia..) and with this, it keeps.. Coming back. I had a major issue with it a few weeks ago, not knowing what it was and it was crashing my computer if I ran anything LARGE(Ex, large online game). I solved that issue, and now.. I keep regetting it. Yesterday I had 55 of it. Yes, 55. I don't know how I had so many clones of it, but I thought I was good now that I had scanned and gotten rid of them all. I had a full day and night of no issues, and then shut down and slept. Today, however, I booted up my computer, ate a donut, and opened a large game, and then after a few minutes.. Loe and behold it crashes in the tale-tell way.
So, here I am doing a full scan, which will take some time, to remove it... AGAIN.. but now I am also here fishing for information.
How does it origionate? Is it indeed a keylogger? Why does it keep coming back?