Malor's Strongbox can be found in Scarlet side Stratholme, by Willey Hopebreaker.
It formerly contained the 
[Medallion of Faith] which was a quest objective for 
[60] The Medallion of Faith. It now only contains a small amount of gold.
Patch changes[]
Patch 4.0.3a (2010-11-23): Contents changed: Medallion of Faith removed, now contains gold.
