maybe you sould - grep the 4.9-STABLE sources of chfn,chsh,date,ls,ps build it and diff/md5 the builded stuff - ktrace(dump) the (current)ls, etc. with the (fresh) cvs version (rev for 4.9-S) - just reinstall the system :) R> Hi, R> I have a 4.9-STABLE FreeBSD box apparently hacked! R> Yesterday I ran chkrootkit-0.41 and I don't like some of the outputs. R> Those are: R> chfn ... INFECTED R> chsh ... INFECTED R> date ... INFECTED R> ls ... INFECTED R> ps ... INFECTED R> But all the rest is NOT PROMISC, NOT INFECTED, NOTHING FOUND, NOTHING DELETED, or NOTHING DETECTED. R> I know by the FreeBSD-Security archives that chkrootkit isn't perfect with FreeBSD versions 5.x R> 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.... R> I tried "truss ls" to find something strange and here are the outputs with something... suspicious for me: R> ioctl(1,TIOCGETA,0xbfbff534) = 0 (0x0) R> ioctl(1,TIOCGWINSZ,0xbfbff5a8) = 0 (0x0) R> getuid() = 0 (0x0) R> readlink("etc/malloc.conf",0xbfbff490,63) ERR#2 'No such file or directory' #SUSPICIOUS R> mmap(0x0,4096,0x3,0x1002,-1,0x0) = 671666176 (0x2808d000) R> break(0x809b000) = 0 (0x0) R> break(0x809c000) = 0 (0x0) R> break(0x809d000) = 0 (0x0) R> break(0x809e000) = 0 (0x0) R> ...........................................................................................and so on! R> And if I am an intrusion victim.... what can I do ? How can I restore R> those files? and how can I find out how this cracker did to break my R> firewall? I mean where is the security hole? R> PS: After verification on other commands declared not infected I found R> out this ERR#2 is common.... maybe I have another problem here! R> Thanks everyone! R> razor. R> _______________________________________________ R> [email protected] mailing list R> http://lists.freebsd.org/mailman/listinfo/freebsd-security R> 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]"