HELP_DECRYPT error on my dropbox from snapshot backup

Hi There,

I have set up snap shot pro to back up my multisite network directly to dropbox automatically over the weekend.

I have come in to work monday morning and opened dropbox, in every folder i now have a HELP_DECRYPT virus oin every folder on dropbox, i looked backthrough events in Dropbox and it was dowloaded with the snapshots automatically last night. It has now spread through my Dropbox.

I will deactivate the plugin for now, but any help on this will be appreciated.

Many Thanks