What steps did you take to remove the infection? It likely wasn't sufficient.
The only thing I can find on it with a bit of Googling, indicates it's a variant
of this trojan...
How to Remove Zlob trojan Media-Codec Goldcodec Braincodec
Regardless what the infection is, I suggest you go through further cleaning steps
to make sure it's cleaned up. The above site has a section with preliminary cleaning
steps. After which you can post a message and get further assistance.
Blocking Unwanted Parasites with a Hosts File
