AIL-framework/bin/trackers/Tracker_Yara.py

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2020-08-12 09:28:36 +02:00
#!/usr/bin/env python3
# -*-coding:UTF-8 -*
##################################
# The Tracker_Yara trackers module
##################################
##################################
# Import External packages
##################################
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import os
import re
import sys
import time
import yara
import requests
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sys.path.append(os.environ['AIL_BIN'])
##################################
# Import Project packages
##################################
from modules.abstract_module import AbstractModule
from packages import Term
from packages.Item import Item
from lib import Tracker
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import NotificationHelper # # TODO: refactor
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class Tracker_Yara(AbstractModule):
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mail_body_template = "AIL Framework,\nNew YARA match: {}\nitem id: {}\nurl: {}{}"
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"""
Tracker_Yara module for AIL framework
"""
def __init__(self):
super(Tracker_Yara, self).__init__()
self.pending_seconds = 5
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self.full_item_url = self.process.config.get("Notifications", "ail_domain") + "/object/item?id="
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# Load Yara rules
self.rules = Tracker.reload_yara_rules()
self.last_refresh = time.time()
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self.item = None
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self.redis_logger.info(f"Module: {self.module_name} Launched")
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def compute(self, item_id):
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# refresh YARA list
if self.last_refresh < Tracker.get_tracker_last_updated_by_type('yara'):
self.rules = Tracker.reload_yara_rules()
self.last_refresh = time.time()
self.redis_logger.debug('Tracked set refreshed')
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print('Tracked set refreshed')
self.item = Item(item_id)
item_content = self.item.get_content()
try:
yara_match = self.rules.match(data=item_content, callback=self.yara_rules_match, which_callbacks=yara.CALLBACK_MATCHES, timeout=60)
if yara_match:
self.redis_logger.info(f'{self.item.get_id()}: {yara_match}')
print(f'{self.item.get_id()}: {yara_match}')
except yara.TimeoutError as e:
print(f'{self.item.get_id()}: yara scanning timed out')
self.redis_logger.info(f'{self.item.get_id()}: yara scanning timed out')
def yara_rules_match(self, data):
tracker_uuid = data['namespace']
item_id = self.item.get_id()
item_source = self.item.get_source()
item_date = self.item.get_date()
# Source Filtering
tracker_sources = Tracker.get_tracker_uuid_sources(tracker_uuid)
if tracker_sources and item_source not in tracker_sources:
print(f'Source Filtering: {data["rule"]}')
return yara.CALLBACK_CONTINUE
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Tracker.add_tracked_item(tracker_uuid, item_id)
# Tags
tags_to_add = Tracker.get_tracker_tags(tracker_uuid)
for tag in tags_to_add:
msg = '{};{}'.format(tag, item_id)
self.send_message_to_queue(msg, 'Tags')
# Mails
mail_to_notify = Tracker.get_tracker_mails(tracker_uuid)
if mail_to_notify:
mail_subject = Tracker.get_email_subject(tracker_uuid)
mail_body = Tracker_Yara.mail_body_template.format(data['rule'], item_id, self.full_item_url, item_id)
for mail in mail_to_notify:
self.redis_logger.debug(f'Send Mail {mail_subject}')
print(f'Send Mail {mail_subject}')
NotificationHelper.sendEmailNotification(mail, mail_subject, mail_body)
# Webhook
webhook_to_post = Term.get_term_webhook(tracker_uuid)
if webhook_to_post:
json_request = {"trackerId": tracker_uuid,
"itemId": item_id,
"itemURL": self.full_item_url + item_id,
"dataRule": data["rule"],
"itemSource": item_source,
"itemDate": item_date,
"tags": tags_to_add,
"emailNotification": f'{mail_to_notify}',
"trackerType": "yara"
}
try:
response = requests.post(webhook_to_post, json=json_request)
if response.status_code >= 400:
self.redis_logger.error(f"Webhook request failed for {webhook_to_post}\nReason: {response.reason}")
except:
self.redis_logger.error(f"Webhook request failed for {webhook_to_post}\nReason: Something went wrong")
return yara.CALLBACK_CONTINUE
if __name__ == '__main__':
module = Tracker_Yara()
module.run()