This is Veera Anjaneya. This form/iconography dates to the Vijayanagar period (14th-16th century). In Karnataka and Telugu speaking areas this is the most frequently occurring iconography of Anjaneya.
Here Anjaneya is seen striding with his right hand raised. A folkish rendition and an unusual depiction. His legs, feet and face are pointing to his left indicating the direction in which he is moving. But his torso is facing us.
The aggressive/threatening gesture with his right hand can also be interpreted as Abhaya mudra. Since Vijayanagar period the martial side of Hanuman became prominent as compared to devotion and humility in the earlier periods.
This Vigraha is about 10 cm in height, and it is from Karnataka. Other than the subject matter, the physical features lead to the regional attribution. This Vigraha may date prior to 1850 CE.
To clean or not to clean: This is a case where I would not clean, except for dusting. The accumulated ingredients used for worship, layers of coloration and the graded ‘patina’ highlighting the contours add charm to the Vigraha. It is trying to tell us something about its journey so far.
Some of my collector friends who specialize in Buddhist artifacts frown upon cleaning and their view is cleaning removes the aura that is accumulated over decades of worship. In this case, you can feel that aura.

