Is getting a good anti-malware or anti-virus software not cheaper and less time consuming than reloading the device os?
Well they are effective to some extent..
So if they detect it, WDYT need to be done after? Just cleaning up the file? And that’s if they detect it in the first place ..
And besides, the op didn't mention whether it was on pc or mobile device he downloaded the mentioned app/software, and as a matter of fact..
Android and IOS are typically OS , Factory resetting should clear all files..
The chances he downloaded a fake version of electrum wallet from his mobile playstore is high...
AFAIK the chance of downloading fake version of Electrum on Playstore and AppStore is actually slim but still a good practice to navigatethrough their official website, unless the app get replaced after installation..(don't know how possible that could be..). Although, there was a case of ledger live app beign replaced but on mac , the thread was on Beginners and Help recently. [Edit] Here is the link
https://bitcointalk.org/index.php?topic=5544590.0