Unlike self-propagating worms, ransom.win32.ranmsghp.smt2.note relies on social engineering and opportunistic delivery. Primary vectors include:
Law enforcement (FBI, Europol) strongly advises . However, if payment was already made: ransom.win32.ranmsghp.smt2.note
Instead of a single paper, you can find detailed technical breakdowns of this threat through analysis reports and encyclopedia entries from security firms: Trend Micro Threat Encyclopedia technical report details the behavior of the Unlike self-propagating worms, ransom