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7c89ed7 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | #!/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 https://mozilla.org/MPL/2.0/.
# Copyright (c) 2017 Mozilla Corporation
from lib.alerttask import AlertTask
from mozdef_util.query_models import SearchQuery, TermMatch, PhraseMatch
class AlertHTTPErrors(AlertTask):
def main(self):
self.parse_config('http_errors.conf', ['url', 'severity'])
search_query = SearchQuery(minutes=15)
search_query.add_must([
TermMatch('category', 'bro'),
TermMatch('source', 'notice'),
PhraseMatch('details.note', 'MozillaHTTPErrors::Excessive_HTTP_Errors_Attacker')
])
self.filtersManual(search_query)
# Search events
self.searchEventsSimple()
self.walkEvents()
# Set alert properties
def onEvent(self, event):
category = 'httperrors'
tags = ['http']
severity = self.config.severity
hostname = event['_source']['hostname']
url = self.config.url
# 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=severity, url=url)
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