mirror of
https://github.com/Security-Onion-Solutions/securityonion.git
synced 2025-12-06 17:22:49 +01:00
108 lines
4.5 KiB
Python
108 lines
4.5 KiB
Python
# -*- coding: utf-8 -*-
|
|
# HiveAlerter modified from original at: https://raw.githubusercontent.com/Nclose-ZA/elastalert_hive_alerter/master/elastalert_hive_alerter/hive_alerter.py
|
|
|
|
import uuid
|
|
|
|
from elastalert.alerts import Alerter
|
|
from thehive4py.api import TheHiveApi
|
|
from thehive4py.models import Alert, AlertArtifact, CustomFieldHelper
|
|
|
|
|
|
class TheHiveAlerter(Alerter):
|
|
"""
|
|
Use matched data to create alerts containing observables in an instance of TheHive
|
|
"""
|
|
|
|
required_options = set(['hive_connection', 'hive_alert_config'])
|
|
|
|
def get_aggregation_summary_text(self, matches):
|
|
text = super(TheHiveAlerter, self).get_aggregation_summary_text(matches)
|
|
if text:
|
|
text = '```\n{0}```\n'.format(text)
|
|
return text
|
|
|
|
def create_artifacts(self, match):
|
|
artifacts = []
|
|
context = {'rule': self.rule, 'match': match}
|
|
for mapping in self.rule.get('hive_observable_data_mapping', []):
|
|
for observable_type, match_data_key in mapping.items():
|
|
try:
|
|
artifacts.append(AlertArtifact(dataType=observable_type, data=match_data_key.format(**context)))
|
|
except KeyError as e:
|
|
print(('format string {} fail cause no key {} in {}'.format(e, match_data_key, context)))
|
|
return artifacts
|
|
|
|
def create_alert_config(self, match):
|
|
context = {'rule': self.rule, 'match': match}
|
|
alert_config = {
|
|
'artifacts': self.create_artifacts(match),
|
|
'sourceRef': str(uuid.uuid4())[0:6],
|
|
'title': '{rule[name]}'.format(**context)
|
|
}
|
|
|
|
alert_config.update(self.rule.get('hive_alert_config', {}))
|
|
|
|
for alert_config_field, alert_config_value in alert_config.items():
|
|
if alert_config_field == 'customFields':
|
|
custom_fields = CustomFieldHelper()
|
|
for cf_key, cf_value in alert_config_value.items():
|
|
try:
|
|
func = getattr(custom_fields, 'add_{}'.format(cf_value['type']))
|
|
except AttributeError:
|
|
raise Exception('unsupported custom field type {}'.format(cf_value['type']))
|
|
value = cf_value['value'].format(**context)
|
|
func(cf_key, value)
|
|
alert_config[alert_config_field] = custom_fields.build()
|
|
elif isinstance(alert_config_value, str):
|
|
alert_config[alert_config_field] = alert_config_value.format(**context)
|
|
elif isinstance(alert_config_value, (list, tuple)):
|
|
formatted_list = []
|
|
for element in alert_config_value:
|
|
try:
|
|
formatted_list.append(element.format(**context))
|
|
except (AttributeError, KeyError, IndexError):
|
|
formatted_list.append(element)
|
|
alert_config[alert_config_field] = formatted_list
|
|
|
|
return alert_config
|
|
|
|
def send_to_thehive(self, alert_config):
|
|
connection_details = self.rule['hive_connection']
|
|
api = TheHiveApi(
|
|
connection_details.get('hive_host', ''),
|
|
connection_details.get('hive_apikey', ''),
|
|
proxies=connection_details.get('hive_proxies', {'http': '', 'https': ''}),
|
|
cert=connection_details.get('hive_verify', False))
|
|
|
|
alert = Alert(**alert_config)
|
|
response = api.create_alert(alert)
|
|
|
|
if response.status_code != 201:
|
|
raise Exception('alert not successfully created in TheHive\n{}'.format(response.text))
|
|
|
|
def alert(self, matches):
|
|
if self.rule.get('hive_alert_config_type', 'custom') != 'classic':
|
|
for match in matches:
|
|
alert_config = self.create_alert_config(match)
|
|
self.send_to_thehive(alert_config)
|
|
else:
|
|
alert_config = self.create_alert_config(matches[0])
|
|
artifacts = []
|
|
for match in matches:
|
|
artifacts += self.create_artifacts(match)
|
|
if 'related_events' in match:
|
|
for related_event in match['related_events']:
|
|
artifacts += self.create_artifacts(related_event)
|
|
|
|
alert_config['artifacts'] = artifacts
|
|
alert_config['title'] = self.create_title(matches)
|
|
alert_config['description'] = self.create_alert_body(matches)
|
|
self.send_to_thehive(alert_config)
|
|
|
|
def get_info(self):
|
|
|
|
return {
|
|
'type': 'hivealerter',
|
|
'hive_host': self.rule.get('hive_connection', {}).get('hive_host', '')
|
|
}
|