mirror of https://github.com/infosecn1nja/HELK.git
126 lines
2.7 KiB
Plaintext
126 lines
2.7 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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"# Windows PowerShell User Agent\n",
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"Detects Windows PowerShell Web Access"
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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: Windows PowerShell User Agent\n",
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" id: c8557060-9221-4448-8794-96320e6f3e74\n",
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" status: experimental\n",
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" description: Detects Windows PowerShell Web Access\n",
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" references:\n",
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" - https://msdn.microsoft.com/powershell/reference/5.1/microsoft.powershell.utility/Invoke-WebRequest\n",
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" author: Florian Roth\n",
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" logsource:\n",
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" category: proxy\n",
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" product: null\n",
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" service: null\n",
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" detection:\n",
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" selection:\n",
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" c-useragent: '* WindowsPowerShell/*'\n",
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" condition: selection\n",
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" fields:\n",
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" - ClientIP\n",
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" - c-uri\n",
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" - c-useragent\n",
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" falsepositives:\n",
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" - Administrative scripts that download files from the Internet\n",
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" - Administrative scripts that retrieve certain website contents\n",
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" level: medium\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-*', 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='c-useragent.keyword:*\\ WindowsPowerShell\\/*')\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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