I got infected with a trojan. From a miner I downloaded. I lost 224k QRK. HDD on my PC got wiped, my mail info were changed.
Wtf do I do now? Is there any way I can get my QRK back?
As I remember, there was one unofficial scam edition of quark which caused so. I made the same as you, but I had good luck and did not lose any QRKs.
Try to find infected wallet.dat, import it to the new official installation folder (in username/AppData/Roamming/quarkcoin). Command repairwallet from console might help, but I am not sure. Do backup while trying to repair something.