Somewhat difficult to respond with so little information.
But the main question is in your title "Is it possible to hijack Avast."
I would never say never, but very difficult with all of the different components and the Avast Self-Defence module.
However there is no stopping users being their own weak link, recently I have recently seen topics in the forum about Avast detecting vulnerable drivers/programs etc. these old drivers, etc. have vulnerabilities that can be exploited, but users seem not to want to do anything about it.
But just looking at your screenshot of Avast:
1 your Avast program version 'is' out of date (23.3 being the latest, but I don't know if Windows 7 is supported in that).
2 your virus definitions are a little out of date, mine - 230408-0.
3. you say you are using "Using Windows 7 32" (bit) but you don't say what its build number is, so it is very possible that too is out of date. However I don't know if there are any Microsoft updates for win7 32bit as that may have reached end of life/support. So I would advise checking if there is a windows update for your version.
So with all of the above, it is quite possible these warnings, from where ever they originate could be correct, but without screenshots of the warnings it is almost impossible to say.
