Hi there, I suddenly have "Installer" running on my Mac every time I start it up (even from sleep). I recently installed CC Cleaner on the machine (before the issue started) Is it possible that It could have been installed with the cleaner?
I don't think it's anything which came down with CCleaner, but there is an adware program called "genieo" which has been around for a number of years, and in various guises, and can run a process called "Installer".
Although this may not be the issue, it's the first thing to check out just in case.
That article was written in 2013, and updated in 2015, and apparently this adware is still around.
To be absolutely safe, can I suggest you follow the advice given and download "Malwarebytes Anti-Malware for Mac" (free), which will scan and remove any adware you may have inadvertently downloaded onto your computer.