“The sefer Mishneh Sochir from Rabbi Yisochor Teichtal hy”d explains the meaning in the stanza with the gemora Megila 15:2 that Haman’s whole wealth was engraved on his heart. So when he was hung, his whole wealth was hung with him.”
FYI – As I stated earlier, I looked up the Yalkut Ma’am Loaz and he brings this very pshat in the name of Rabeinu Dovid HaNagid (ben R Avrohom ben haRambam)…