Rather than starting with a conclusion, I’d prefer some information around the situation, issues and symptoms.
What are the “possible driver corruptions” reportedly being encountered?
Any diagnostics or error messages?
Which iMac model year?
HDD or SSD or Fusion?
Are current and complete backups available? If not, go get those backups now.
But… The “trojan virus” phrasing common in advertisements; in various ads, pop-ups, and probably also text and email. Probably also in some sketchy add-on security apps.
In many if not most cases, mention of ”trojan virus” is probably an advertisement: Virus Warning! What to do! - Apple Community
Lots of scams around, too: Scam Pop-ups, Scam Viruses, Scam Receipts… - Apple Community