зеркало из https://github.com/mozilla/MozDef.git
56 строки
2.3 KiB
Python
56 строки
2.3 KiB
Python
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#!/usr/bin/env python
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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# Copyright (c) 2014 Mozilla Corporation
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#
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# Contributors:
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# Jeff Bryner jbryner@mozilla.com
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from lib.alerttask import AlertTask
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import pyes
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class AlertAccountCreations(AlertTask):
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def main(self):
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# look for events in last X mins
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date_timedelta = dict(minutes=10)
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# Configure filters using pyes
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must = [
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pyes.TermFilter('_type', 'event'),
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pyes.TermFilter('tags', 'firefoxaccounts'),
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pyes.QueryFilter(pyes.MatchQuery('details.path','/v1/account/create','phrase'))
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]
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#ignore test accounts and attempts to create accounts that already exist.
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must_not = [
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pyes.QueryFilter(pyes.WildcardQuery(field='details.email',value='*restmail.net')),
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pyes.TermFilter('details.code','429')
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]
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self.filtersManual(date_timedelta, must=must, must_not=must_not)
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# Search aggregations on field 'sourceipv4address', keep X samples of events at most
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self.searchEventsAggregated('details.sourceipv4address', samplesLimit=10)
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# alert when >= X matching events in an aggregation
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self.walkAggregations(threshold=10)
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# Set alert properties
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def onAggregation(self, aggreg):
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# aggreg['count']: number of items in the aggregation, ex: number of failed login attempts
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# aggreg['value']: value of the aggregation field, ex: toto@example.com
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# aggreg['events']: list of events in the aggregation
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category = 'fxa'
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tags = ['fxa']
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severity = 'INFO'
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summary = ('{0} fxa account creation attempts by {1}'.format(aggreg['count'], aggreg['value']))
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emails = self.mostCommon(aggreg['allevents'],'_source.details.email')
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#did they try to create more than one email account?
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#or just retry an existing one
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if len(emails) > 1:
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for i in emails[:5]:
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summary += ' {0} ({1} hits)'.format(i[0], i[1])
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# Create the alert object based on these properties
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return self.createAlertDict(summary, category, tags, aggreg['events'], severity)
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