Razor, Download the source and recompile those binaries and see if chkrootkit gives you the same 'INFECTED' messages. Daniel M. Spielman On Fri, 21 May 2004, RazorOnFreeBSD wrote: > Hi, > > I have a 4.9-STABLE FreeBSD box apparently hacked! > Yesterday I ran chkrootkit-0.41 and I don't like some of the outputs. > Those are: > chfn ... INFECTED > chsh ... INFECTED > date ... INFECTED > ls ... INFECTED > ps ... INFECTED > > But all the rest is NOT PROMISC, NOT INFECTED, NOTHING FOUND, NOTHING DELETED, or NOTHING DETECTED. > I know by the FreeBSD-Security archives that chkrootkit isn't perfect with FreeBSD versions 5.x > But I'm not in that case. So I'm a little bit afraid and as a newbie I don't really know what to do.... > I tried "truss ls" to find something strange and here are the outputs with something... suspicious for me: > > ioctl(1,TIOCGETA,0xbfbff534) = 0 (0x0) > ioctl(1,TIOCGWINSZ,0xbfbff5a8) = 0 (0x0) > getuid() = 0 (0x0) > readlink("etc/malloc.conf",0xbfbff490,63) ERR#2 'No such file or directory' #SUSPICIOUS > mmap(0x0,4096,0x3,0x1002,-1,0x0) = 671666176 (0x2808d000) > break(0x809b000) = 0 (0x0) > break(0x809c000) = 0 (0x0) > break(0x809d000) = 0 (0x0) > break(0x809e000) = 0 (0x0) > ...........................................................................................and so on! > > And if I am an intrusion victim.... what can I do ? How can I restore those files? and how can I find out how this cracker did to break my firewall? I mean where is the security hole? > PS: After verification on other commands declared not infected I found out this ERR#2 is common.... maybe I have another problem here! > > Thanks everyone! > razor. > _______________________________________________ > [email protected] mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-security > To unsubscribe, send any mail to "[email protected]" > _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-security To unsubscribe, send any mail to "[email protected]"