{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# CMSTP Execution\n",
    "Detects various indicators of Microsoft Connection Manager Profile Installer execution"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Rule Content\n",
    "```\n",
    "- action: global\n",
    "  title: CMSTP Execution\n",
    "  id: 9d26fede-b526-4413-b069-6e24b6d07167\n",
    "  status: stable\n",
    "  description: Detects various indicators of Microsoft Connection Manager Profile\n",
    "    Installer execution\n",
    "  tags:\n",
    "  - attack.defense_evasion\n",
    "  - attack.execution\n",
    "  - attack.t1191\n",
    "  - attack.g0069\n",
    "  - car.2019-04-001\n",
    "  author: Nik Seetharaman\n",
    "  references:\n",
    "  - http://www.endurant.io/cmstp/detecting-cmstp-enabled-code-execution-and-uac-bypass-with-sysmon/\n",
    "  detection:\n",
    "    condition: 1 of them\n",
    "  fields:\n",
    "  - CommandLine\n",
    "  - ParentCommandLine\n",
    "  - Details\n",
    "  falsepositives:\n",
    "  - Legitimate CMSTP use (unlikely in modern enterprise environments)\n",
    "  level: high\n",
    "- logsource:\n",
    "    product: windows\n",
    "    service: sysmon\n",
    "  detection:\n",
    "    selection2:\n",
    "      EventID: 12\n",
    "      TargetObject: '*\\cmmgr32.exe*'\n",
    "    selection3:\n",
    "      EventID: 13\n",
    "      TargetObject: '*\\cmmgr32.exe*'\n",
    "    selection4:\n",
    "      EventID: 10\n",
    "      CallTrace: '*cmlua.dll*'\n",
    "- logsource:\n",
    "    category: process_creation\n",
    "    product: windows\n",
    "  detection:\n",
    "    selection1:\n",
    "      ParentImage: '*\\cmstp.exe'\n",
    "\n",
    "```"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Querying Elasticsearch"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Import Libraries"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "from elasticsearch import Elasticsearch\n",
    "from elasticsearch_dsl import Search\n",
    "import pandas as pd"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Initialize Elasticsearch client"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "es = Elasticsearch(['http://helk-elasticsearch:9200'])\n",
    "searchContext = Search(using=es, index='logs-*', doc_type='doc')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Run Elasticsearch Query"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "s = searchContext.query('query_string', query='((event_id:\"12\" AND registry_key_path.keyword:*\\\\cmmgr32.exe*) OR (event_id:\"13\" AND registry_key_path.keyword:*\\\\cmmgr32.exe*) OR (event_id:\"10\" AND process_call_trace.keyword:*cmlua.dll*))')\n",
    "response = s.execute()\n",
    "if response.success():\n",
    "    df = pd.DataFrame((d.to_dict() for d in s.scan()))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "s = searchContext.query('query_string', query='process_parent_path.keyword:*\\\\cmstp.exe')\n",
    "response = s.execute()\n",
    "if response.success():\n",
    "    df = pd.DataFrame((d.to_dict() for d in s.scan()))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Show Results"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "df.head()"
   ]
  }
 ],
 "metadata": {},
 "nbformat": 4,
 "nbformat_minor": 4
}