Well, not always. But sometimes, a virus call other virus, and crossed scans could be helpful.
Expecially if PCs are not well protected. (Or if you whitelist suspicious files)
Grab Zemana here. And no, it's not a virus
Zemana - AntiMalware and AntiLogger Protection,
Well, if you use chrome, any exe is considered dangerous on save by default, even if it is clean.
And yes, put ublock origin in your browser; it reduces the risks on going to infected sites.
Of course, in most cases, I do:
Virustotal scan > An useful pre-check as it uses several AV engines.
AV scan (bitdefender in your case) > sometimes, other tools as MalwareBytes or Zemana sees better then regular antivirus. But basic scan is always a good practice.
Zemana and/or MalwareBytes scan.
Better scan everywhere (not just the file) both with AV and Zemana/MalwareBytes, when there is a suspect of infection.
Other tools are helpful, but usually if the infection is not spread, this will suffice.
There is even an online version of
icy tower. Don't need anything on pc
Maybe the icytower you have is softonic (known to bundle adwares)