「」。
The password is "Muiriel".
Literal
Password [topic-は] "Muiriel" [copula-です].
Note the use of 「」 (Japanese corner brackets) to quote a specific string — the equivalent of English quotation marks. Inside the brackets, the Latin script 'Muiriel' appears unchanged. Mixed-script content like this is normal in modern Japanese, especially in technical or product contexts.