The Leech from the Vandal Destroyer will be bound to Character, so you can't transfer it to other characters on your Account.
The very easiest AND quickest way I can imagine right now, is to acquire some 2000 ZEN, buy Lock Box Keys and sell them on the Exchange.
The quickest way I know of to earn big ec, short of buying zen, would be earning and selling crafting materials. Either selling the materials directly or making superior tech upgrades work. Another solid way to earn ec is to have multiple KDF characters and run lots of marauding doff missions to pick up contraband. You can get around 3.5 to 4 million per 100.