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# Copyright (C) 2012 Martin Holste
#
# You can copy, redistribute or modify this Program under the terms of
# the GNU General Public License version 2 as published by the Free
# Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# version 2 along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
#
package Processor;
use Moose;
use Data::Dumper;
use Module::Pluggable search_path => qw(Processor), sub_name => 'processors';
use Module::Pluggable search_path => qw(Action), sub_name => 'actions';
use Log::Log4perl;
use JSON;
has 'conf' => (is => 'rw', isa => 'HashRef', required => 1);
has 'log' => (is => 'rw', isa => 'Object', required => 1);
has 'json' => (is => 'ro', isa => 'JSON', required => 1, default => sub { return JSON->new->pretty->allow_blessed });
sub BUILD {
my $self = shift;
foreach my $processor_plugin ($self->processors){
next unless exists $self->conf->{processors}->{$processor_plugin};
eval qq{require $processor_plugin};
$self->log->info('Using processor plugin ' . $processor_plugin->description);
}
foreach my $action_plugin ($self->actions){
next unless exists $self->conf->{actions}->{$action_plugin};
eval qq{require $action_plugin};
$self->log->info('Using action plugin ' . $action_plugin->description);
}
}
sub process {
my $self = shift;
my $line = shift;
#$self->log->debug('got line ' . $line);
eval {
my $data = $self->json->decode($line);
$data->{processors} = {};
if($data->{md5}){
foreach my $processor_plugin ($self->processors){
next unless exists $self->conf->{processors}->{$processor_plugin};
my $processor = $processor_plugin->new(conf => $self->conf, log => $self->log, md5 => $data->{md5});
$self->log->debug('processing with plugin ' . $processor->description);
$data->{processors}->{ $processor->name } = $processor->process();
}
}
#$self->log->debug('data: ' . Dumper($data));
foreach my $action_plugin ($self->actions){
next unless exists $self->conf->{actions}->{$action_plugin};
my $action = $action_plugin->new(conf => $self->conf, log => $self->log, data => $data);
$self->log->debug('performing action with plugin ' . $action->description);
$action->perform();
}
};
if ($@){
$self->log->error('Error: ' . $@ . ', processing line: ' . $line);
}
}
package main;
use strict;
use Getopt::Std;
use FindBin;
use Config::JSON;
use File::Tail;
# Include the directory this script is in
use lib $FindBin::Bin;
my %Opts;
getopts('c:', \%Opts);
my $conf_file = $Opts{c} ? $Opts{c} : '/etc/suricata/file_processor.conf';
my $Conf = {
logdir => '/tmp',
debug_level => 'TRACE',
actions => {
'Action::Log' => 1,
'Action::Syslog' => 1,
},
processors => {
'Processor::Anubis' => 1,
'Processor::Malwr' => 1,
'Processor::ThreatExpert' => 1,
}
};
if (-f $conf_file){
$Conf = Config::JSON->new( $conf_file );
$Conf = $Conf->{config}; # native hash is 10x faster than using Config::JSON->get()
}
# Setup logger
my $logdir = $Conf->{logdir} ? $Conf->{logdir} : '/var/log/suricata';
my $debug_level = $Conf->{debug_level} ? $Conf->{debug_level} : 'TRACE';
my $l4pconf = qq(
log4perl.category.App = $debug_level, File, Screen
log4perl.appender.File = Log::Log4perl::Appender::File
log4perl.appender.File.filename = $logdir/file_processor.log
log4perl.appender.File.syswrite = 1
log4perl.appender.File.recreate = 1
log4perl.appender.File.layout = Log::Log4perl::Layout::PatternLayout
log4perl.appender.File.layout.ConversionPattern = * %p [%d] %F (%L) %M %P %m%n
log4perl.filter.ScreenLevel = Log::Log4perl::Filter::LevelRange
log4perl.filter.ScreenLevel.LevelMin = $debug_level
log4perl.filter.ScreenLevel.LevelMax = ERROR
log4perl.filter.ScreenLevel.AcceptOnMatch = true
log4perl.appender.Screen = Log::Log4perl::Appender::Screen
log4perl.appender.Screen.Filter = ScreenLevel
log4perl.appender.Screen.stderr = 1
log4perl.appender.Screen.layout = Log::Log4perl::Layout::PatternLayout
log4perl.appender.Screen.layout.ConversionPattern = * %p [%d] %F (%L) %M %P %m%n
);
Log::Log4perl::init( \$l4pconf ) or die("Unable to init logger\n");
my $Log = Log::Log4perl::get_logger('App') or die("Unable to init logger\n");
my $processor = new Processor(conf => $Conf, log => $Log);
my $file = $Conf->{file} ? $Conf->{file} : '/var/log/suricata/files-json.log';
my $tail = new File::Tail(name => $file, maxinterval => 1);
while (my $line = $tail->read){
$processor->process($line);
}
__END__
Example config file /etc/suricata/file_processor.conf
{
"logdir": "/var/log/suricata",
"debug_level": "INFO",
"virustotal_apikey": "xxx"
"actions": {
"Action::Log": 1
},
"processors": {
"Processor::Anubis": 1,
"Processor::Malwr": 1,
"Processor::ThreatExpert": 1,
"Processor::VirusTotal": 1
}
}
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