mirror of https://github.com/infosecn1nja/HELK.git
132 lines
2.9 KiB
Plaintext
132 lines
2.9 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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"# PowerShell called from an Executable Version Mismatch\n",
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"Detects PowerShell called from an executable by the version mismatch method"
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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: PowerShell called from an Executable Version Mismatch\n",
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" id: c70e019b-1479-4b65-b0cc-cd0c6093a599\n",
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" status: experimental\n",
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" description: Detects PowerShell called from an executable by the version mismatch\n",
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" method\n",
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" references:\n",
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" - https://adsecurity.org/?p=2921\n",
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" tags:\n",
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" - attack.defense_evasion\n",
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" - attack.execution\n",
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" - attack.t1086\n",
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" author: Sean Metcalf (source), Florian Roth (rule)\n",
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" logsource:\n",
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" product: windows\n",
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" service: powershell-classic\n",
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" category: null\n",
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" detection:\n",
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" selection1:\n",
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" EventID: 400\n",
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" EngineVersion:\n",
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" - 2.*\n",
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" - 4.*\n",
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" - 5.*\n",
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" HostVersion: 3.*\n",
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" condition: selection1\n",
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" falsepositives:\n",
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" - Penetration Tests\n",
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" - Unknown\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-powershell-*', 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:\"400\" AND powershell.engine.version.keyword:(2.* OR 4.* OR 5.*) AND powershell.host.version.keyword:3.*)')\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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