These: > > s00p 67431 4.0 0.1 4660 2828 pd S 7:56PM 0:00.05 _su (tcsh) > > s00p 67438 0.0 0.0 1420 908 pd R+ 7:56PM 0:00.00 ps aux
do not fit the criteria of the grep commands: >> spark# ps aux | grep psybnc | grep s00p which will only list entries containing psybnc and s00p, in that order. -------------- Original message ---------------------- From: Chuck Swiger <[EMAIL PROTECTED]> > Ofloo wrote: > > Can someone explain me this !? > > > > spark# ps aux | grep psybnc | grep s00p > > s00p 8777 0.0 0.3 43096 5716 p1- S Fri06PM 4:30.25 ./psybnc > > > > spark# su s00p > > -([EMAIL PROTECTED])-(19:56:45) > > > > -(~/)-> ps aux > > USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND > > s00p 67431 4.0 0.1 4660 2828 pd S 7:56PM 0:00.05 _su (tcsh) > > s00p 67438 0.0 0.0 1420 908 pd R+ 7:56PM 0:00.00 ps aux > > psybnc is an IRC relay agent; unless someone normally runs such things, > having > one of these processes appear but be "invisible" to top or normal invocations > of ps is a possible indication that the system has been hacked. > > A typical pattern involves a user having their account password sniffed via > wireless when reading email or whatever, and the attacker gains shell access > to their email server (assuming it's a Unix system), and runs this. It > includes a generic remote filesharing capability and some kind of port > redirector ala netcat or SSH port forwarding, so the hacked machine can be > used as a remote control channel to drive other compromised machines... > > > This came after a complaint from the user, who couldn't kill his process, > > because it wasn't visible in his session, and he didn't su !? > > However, I'm not sure whether the above is relevant, if your user was trying > to run this IRC agent. :-) > > -- > -Chuck > > > _______________________________________________ > email@example.com mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "[EMAIL PROTECTED]" _______________________________________________ firstname.lastname@example.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"