It is possible, but will take a longer time.
The time could take hundreds of years, if not thousands, or millions.
https://stackoverflow.com/questions/11807869/how-to-crack-aes-128-encryption-used-in-winrarThe idea is that the encryption does not actually store the password that any brute force can find out.
Decryption thru brute force will not work in reasonable time.
There was an article I found many days ago about how encrypted .rar file is way much more secure than encrypted .zip file, I tried to find it but can't.
Edit:
The article explained well why a good password-protected .rar file cannot be cracked/decrypted by brute force or any software program.
With the software they use, they can do it much quicker. However, even assuming they can't, they have ways to obtain your private keys and other information once you use the relevant password to open the .rar file. It is not safe. A hardware wallet such as Trezor is more secure.