MozDef/alerts/ssl_blacklist_hit.py

46 строки
1.4 KiB
Python
Исходник Обычный вид История

#!/usr/bin/env python
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
# Copyright (c) 2014 Mozilla Corporation
#
# Contributors:
# Michal Purzynski michal@mozilla.com
from lib.alerttask import AlertTask
from query_models import SearchQuery, TermMatch, ExistsMatch
class AlertSSLBlacklistHit(AlertTask):
def main(self):
search_query = SearchQuery(minutes=15)
search_query.add_must([
TermMatch('_type', 'bro'),
TermMatch('eventsource', 'nsm'),
TermMatch('category', 'brointel'),
TermMatch('details.sources', 'abuse.ch SSLBL'),
ExistsMatch('details.sourceipaddress')
])
self.filtersManual(search_query)
# Search events
self.searchEventsSimple()
self.walkEvents()
# Set alert properties
def onEvent(self, event):
category = 'correlatedalerts'
tags = ['nsm,bro,correlated']
severity = 'NOTICE'
hostname = event['_source']['hostname']
# the summary of the alert is the same as the event
summary = '{0} {1}'.format(hostname, event['_source']['summary'])
# Create the alert object based on these properties
return self.createAlertDict(summary, category, tags, [event], severity)