mirror of https://github.com/infosecn1nja/HELK.git
136 lines
3.3 KiB
Plaintext
136 lines
3.3 KiB
Plaintext
{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"# Account Tampering - Suspicious Failed Logon Reasons\n",
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"This method uses uncommon error codes on failed logons to determine suspicious activity and tampering with accounts that have been disabled or somehow restricted."
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Rule Content\n",
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"```\n",
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"- title: Account Tampering - Suspicious Failed Logon Reasons\n",
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" id: 9eb99343-d336-4020-a3cd-67f3819e68ee\n",
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" description: This method uses uncommon error codes on failed logons to determine\n",
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" suspicious activity and tampering with accounts that have been disabled or somehow\n",
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" restricted.\n",
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" author: Florian Roth\n",
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" modified: 2019/03/01\n",
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" references:\n",
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" - https://twitter.com/SBousseaden/status/1101431884540710913\n",
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" tags:\n",
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" - attack.persistence\n",
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" - attack.privilege_escalation\n",
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" - attack.t1078\n",
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" logsource:\n",
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" product: windows\n",
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" service: security\n",
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" category: null\n",
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" detection:\n",
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" selection:\n",
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" EventID:\n",
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" - 4625\n",
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" - 4776\n",
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" Status:\n",
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" - '0xC0000072'\n",
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" - '0xC000006F'\n",
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" - '0xC0000070'\n",
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" - '0xC0000413'\n",
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" - '0xC000018C'\n",
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" - '0xC000015B'\n",
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" condition: selection\n",
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" falsepositives:\n",
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" - User using a disabled account\n",
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" level: high\n",
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"\n",
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"```"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Querying Elasticsearch"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Import Libraries"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"from elasticsearch import Elasticsearch\n",
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"from elasticsearch_dsl import Search\n",
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"import pandas as pd"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Initialize Elasticsearch client"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"es = Elasticsearch(['http://helk-elasticsearch:9200'])\n",
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"searchContext = Search(using=es, index='logs-endpoint-winevent-security-*', doc_type='doc')"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Run Elasticsearch Query"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"s = searchContext.query('query_string', query='(event_id:(\"4625\" OR \"4776\") AND event_status:(\"0xC0000072\" OR \"0xC000006F\" OR \"0xC0000070\" OR \"0xC0000413\" OR \"0xC000018C\" OR \"0xC000015B\"))')\n",
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"response = s.execute()\n",
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"if response.success():\n",
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" df = pd.DataFrame((d.to_dict() for d in s.scan()))"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Show Results"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"df.head()"
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]
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}
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],
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"metadata": {},
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"nbformat": 4,
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"nbformat_minor": 4
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}
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