зеркало из https://github.com/mozilla/MozDef.git
48 строки
1.8 KiB
Python
48 строки
1.8 KiB
Python
#!/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) 2018 Mozilla Corporation
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from lib.alerttask import AlertTask, add_hostname_to_ip
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from mozdef_util.query_models import SearchQuery, TermMatch, QueryStringMatch, PhraseMatch
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class NSMScanAddress(AlertTask):
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def __init__(self):
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AlertTask.__init__(self)
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self._config = self.parse_json_alert_config('nsm_scan_address.json')
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def main(self):
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search_query = SearchQuery(minutes=1)
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search_query.add_must([
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TermMatch('category', 'bro'),
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TermMatch('source', 'notice'),
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PhraseMatch('details.note', 'Scan::Address_Scan'),
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QueryStringMatch('details.sourceipaddress: {}'.format(self._config['sourcemustmatch']))
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])
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search_query.add_must_not([
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QueryStringMatch('details.sourceipaddress: {}'.format(self._config['sourcemustnotmatch']))
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])
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self.filtersManual(search_query)
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self.searchEventsAggregated('details.sourceipaddress', samplesLimit=10)
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self.walkAggregations(threshold=1)
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def onAggregation(self, aggreg):
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category = 'nsm'
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severity = 'NOTICE'
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tags = ['nsm', "bro", 'addressscan']
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indicators = 'unknown'
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x = aggreg['events'][0]['_source']
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if 'details' in x:
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if 'indicators' in x['details']:
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indicators = x['details']['sourceipaddress']
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indicators_info = add_hostname_to_ip(indicators, '{0} ({1})', require_internal=False)
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summary = 'Address scan from {}'.format(indicators_info)
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return self.createAlertDict(summary, category, tags, aggreg['events'], severity)
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