Hypocala deflorata

Inner wing : Similar to Hypocala deflorata Fabricius, 1794 – Variable Yellow Underwing , but the black band on the end
wasn't so thick. It was thin and a bit waved. Have attached it for reference only. It could still be this as the specimen recorded in Agasthiyamalai also isnt as black banded as the ones in MOI. I referred to this paper : Moth diversity (Lepidoptera: Heterocera) of Shendurney and Ponmudi in Agastyamalai Biosphere Reserve, Kerala, India, with notes on new records Yash Sondhi, Sanjay Sondhi, Shashank Rajendra Pathour, and Krushnamegh Kunte

Checked moths of thailand : Doesnt match Hypocala guttiventri.
Checked other sources : H.biaccurata doesnt have a spot , hence it is not that either

Will keep updating as I read up