- W32.Plage.Worm is a memory resident worm discovered on Jan 13, 2000. The worm replies on MAPI32 and propagates by replying to unread email with the following message body: Ill try to reply as soon as possible. Take a look to the attachment and send me your opinion! ...www.symantec.com/avcenter/venc/data/w32.plage.worm.html