RAT
IceRat
According to Karsten Hahn, this malware is actually written in JPHP, but can be treated similar to .class files produced by Java.
IceRat is a Java rat.
Background
Karsten Hahn notes that this malware is actually built in JPHP, yet it can be handled much like the .class files Java generates. IceRat has been seen performing both information theft and cryptomining.
Source: Malpedia (Fraunhofer FKIE).