зеркало из https://github.com/mozilla/MozDef.git
46 строки
1.7 KiB
Python
46 строки
1.7 KiB
Python
# 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) 2017 Mozilla Corporation
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from lib.alerttask import AlertTask
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from mozdef_util.query_models import SearchQuery, TermMatch, ExistsMatch, PhraseMatch
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class AlertDuoAuthFail(AlertTask):
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def main(self):
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self.parse_config('duo_authfail.conf', ['url'])
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search_query = SearchQuery(minutes=15)
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search_query.add_must([
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TermMatch('category', 'authentication'),
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ExistsMatch('details.sourceipaddress'),
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ExistsMatch('details.username'),
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PhraseMatch('details.result', 'fraud')
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])
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self.filtersManual(search_query)
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self.searchEventsSimple()
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self.walkEvents()
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# Set alert properties
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def onEvent(self, event):
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category = 'duosecurity'
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tags = ['duosecurity', 'duosecuritypagerduty']
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severity = 'WARNING'
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url = self.config.url
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sourceipaddress = 'unknown'
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user = 'unknown'
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x = event['_source']
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if 'details' in x:
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if 'sourceipaddress' in x['details']:
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sourceipaddress = x['details']['sourceipaddress']
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if 'username' in x['details']:
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user = x['details']['username']
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summary = 'Duo Authentication Failure: user {1} rejected and marked a Duo Authentication attempt from {0} as fraud'.format(sourceipaddress, user)
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# Create the alert object based on these properties
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return self.createAlertDict(summary, category, tags, [event], severity, url)
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