ail-framework/bin/trackers/Tracker_Yara.py

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#!/usr/bin/env python3
# -*-coding:UTF-8 -*
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"""
The Tracker_Yara trackers module
===================
"""
##################################
# Import External packages
##################################
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import os
import sys
import time
import yara
sys.path.append(os.environ['AIL_BIN'])
##################################
# Import Project packages
##################################
from modules.abstract_module import AbstractModule
from lib.objects import ail_objects
from lib import Tracker
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from exporter.MailExporter import MailExporterTracker
from exporter.WebHookExporter import WebHookExporterTracker
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class Tracker_Yara(AbstractModule):
"""
Tracker_Yara module for AIL framework
"""
def __init__(self, queue=True):
super(Tracker_Yara, self).__init__(queue=queue)
self.pending_seconds = 5
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# Load Yara rules
self.rules = Tracker.get_tracked_yara_rules()
self.last_refresh = time.time()
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self.obj = None
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# Exporter
self.exporters = {'mail': MailExporterTracker(),
'webhook': WebHookExporterTracker()}
self.redis_logger.info(f"Module: {self.module_name} Launched")
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def compute(self, obj_id, obj_type='item', subtype=''):
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# refresh YARA list
if self.last_refresh < Tracker.get_tracker_last_updated_by_type('yara'):
self.rules = Tracker.get_tracked_yara_rules()
self.last_refresh = time.time()
self.redis_logger.debug('Tracked set refreshed')
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print('Tracked set refreshed')
self.obj = ail_objects.get_object(obj_type, subtype, obj_id)
obj_type = self.obj.get_type()
# Object Filter
if obj_type not in self.rules:
return None
content = self.obj.get_content(r_str=True)
try:
yara_match = self.rules[obj_type].match(data=content, callback=self.yara_rules_match,
which_callbacks=yara.CALLBACK_MATCHES, timeout=60)
if yara_match:
self.redis_logger.warning(f'tracker yara: new match {self.obj.get_id()}: {yara_match}')
print(f'{self.obj.get_id()}: {yara_match}')
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except yara.TimeoutError:
print(f'{self.obj.get_id()}: yara scanning timed out')
self.redis_logger.info(f'{self.obj.get_id()}: yara scanning timed out')
def yara_rules_match(self, data):
tracker_name = data['namespace']
obj_id = self.obj.get_id()
for tracker_uuid in Tracker.get_trackers_by_tracked_obj_type('yara', self.obj.get_type(), tracker_name):
tracker = Tracker.Tracker(tracker_uuid)
# Filter Object
filters = tracker.get_filters()
if ail_objects.is_filtered(self.obj, filters):
continue
if self.obj.get_type() == 'item':
date = self.obj.get_date()
else:
date = None
tracker.add(self.obj.get_type(), self.obj.get_subtype(r_str=True), obj_id, date=date)
# Tags
for tag in tracker.get_tags():
if self.obj.get_type() == 'item':
msg = f'{tag};{obj_id}'
self.add_message_to_queue(msg, 'Tags')
else:
self.obj.add_tag(tag)
# Mails
if tracker.mail_export():
# TODO add matches + custom subjects
self.exporters['mail'].export(tracker, self.obj)
# Webhook
if tracker.webhook_export():
self.exporters['webhook'].export(tracker, self.obj)
return yara.CALLBACK_CONTINUE
if __name__ == '__main__':
module = Tracker_Yara()
module.run()
# module.compute('archive/gist.github.com/2023/04/13/chipzoller_d8d6d2d737d02ad4fe9d30a897170761.gz')