I never run any programme as root unless it's to install new software, but
apparently, I did.
And apparently, it's a ClamAv issue, rather. I found this:
http://r.virscan.org/report/4621a61590b1baedba405dfe10d68675
I ran some .net programmes a friend of mine created to modify gba rom files.
I am helping him test these programmes. Apparently ClamAv detects them as
Trojans. After doing some research, it seems it wasn't a trojan. I deleted it
manually already, though...
http://r.virscan.org/report/4621a61590b1baedba405dfe10d68675