зеркало из https://github.com/mozilla/MozDef.git
49 строки
1.6 KiB
Python
49 строки
1.6 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 https://mozilla.org/MPL/2.0/.
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# Copyright (c) 2014 Mozilla Corporation
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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 AlertSFTPEvent(AlertTask):
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def main(self):
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search_query = SearchQuery(minutes=5)
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search_query.add_must([
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TermMatch('category', 'execve'),
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TermMatch('processname', 'audisp-json'),
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TermMatch('details.processname', 'ssh'),
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PhraseMatch('details.parentprocess', 'sftp')
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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 = 'execve'
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severity = 'NOTICE'
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tags = ['audisp-json, audit']
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srchost = 'unknown'
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username = 'unknown'
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directory = 'unknown'
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x = event['_source']
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if 'hostname' in x:
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srchost = x['hostname']
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if 'details' in x:
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if 'originaluser' in x['details']:
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username = x['details']['originaluser']
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if 'cwd' in x['details']:
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directory = x['details']['cwd']
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summary = 'SFTP Event by {0} from host {1} in directory {2}'.format(username, srchost, directory)
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# Create the alert object based on these properties
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return self.createAlertDict(summary, category, tags, [event], severity)
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