So, without a word list this could be a long process using a Linux cracker such as HashCat. 

Luckily, one of the of the hash tables online have the answer you're looking for.

Try one of these:

https://crackstation.net/

https://hashes.com/en/decrypt/hash
     
  277c14a1a4dc564494571a1257da8504  
 
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