I am sorry, but this now the second answer that is not helpful and does not answer my question.
I know about virustotal, I did it in the first place! However, I need a reference checksum because I did not create the rescue disc by myself and have currently no machine to create another one.
So please, if anyone has the current version of Avast, please let me know any checksum (md5, sha-1, sha-256) of aswPEAntivirus.exe (either from the installed program or the rescue disc - assuming both executables are the same)
Thanks!