Mastoor
Yes. Mastoor is a real name derived from Arabic/Persian vocabulary and is attested in Pashto and South Asian Muslim naming contexts as a rare given name or literary sobriquet.
Literally it means 'hidden', 'covered', or 'veiled', derived from the Arabic root s‑t‑r (to cover/conceal).
Mastoor is traditionally used for boys in recorded usage, though the lexical meaning is neutral and could be chosen as unisex in modern contexts; classical usage is masculine.
The exact personal name 'Mastoor' does not appear as a proper name in the Qur'an or major Hadith collections. The verbal/root forms of s‑t‑r (to cover/protect) do occur in Islamic literature.
Pronounced mas-TOOR (IPA /masˈtuːr/), with a long vowel on the final syllable in classical pronunciation.