зеркало из https://github.com/mozilla/MozDef.git
44 строки
1.5 KiB
Python
44 строки
1.5 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) 2014 Mozilla Corporation
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#
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# This code alerts on every successfully opened session on any of the host from a given list
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from lib.alerttask import AlertTask
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from mozdef_util.query_models import SearchQuery, TermMatch, PhraseMatch
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class TraceAudit(AlertTask):
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def main(self):
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self.parse_config('trace_audit.conf', ['hostfilter'])
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search_query = SearchQuery(minutes=5)
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search_query.add_must([
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TermMatch('details.processname', 'strace'),
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])
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for host in self.config.hostfilter.split():
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search_query.add_must_not(PhraseMatch('hostname', host))
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self.filtersManual(search_query)
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self.searchEventsAggregated('details.originaluser', samplesLimit=10)
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self.walkAggregations(threshold=1)
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def onAggregation(self, aggreg):
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category = 'trace'
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severity = 'WARNING'
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tags = ['audit']
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hosts = set([event['_source']['hostname'] for event in aggreg['events']])
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summary = '{0} instances of Strace or Ptrace executed by {1} on {2}'.format(
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aggreg['count'],
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aggreg['value'],
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','.join(hosts)
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)
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return self.createAlertDict(summary, category, tags, aggreg['events'], severity)
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