I don’t remember installing it, everything about it seems “legitimate” grepping through the logs the installation date seems to be 21st January. There was always some slow down when I initially started firefox and today I had HTOP open just to see what was happening and Clamav and ClamAV freshclam process was there. How do I check if it is compromised or which user if any installed it?
SSH is disabled.
to answer this question: if you’re on a dpkg-based system, check
/var/log/dpkg.log(or/var/log/dpkg.log.2.gzto get logs from January, if your system rotates them once a month).