{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# CACTUSTORCH Remote Thread Creation\n",
    "Detects remote thread creation from CACTUSTORCH as described in references."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Rule Content\n",
    "```\n",
    "- title: CACTUSTORCH Remote Thread Creation\n",
    "  id: 2e4e488a-6164-4811-9ea1-f960c7359c40\n",
    "  description: Detects remote thread creation from CACTUSTORCH as described in references.\n",
    "  references:\n",
    "  - https://twitter.com/SBousseaden/status/1090588499517079552\n",
    "  - https://github.com/mdsecactivebreach/CACTUSTORCH\n",
    "  status: experimental\n",
    "  author: '@SBousseaden (detection), Thomas Patzke (rule)'\n",
    "  logsource:\n",
    "    product: windows\n",
    "    service: sysmon\n",
    "    category: null\n",
    "  detection:\n",
    "    selection:\n",
    "      EventID: 8\n",
    "      SourceImage:\n",
    "      - '*\\System32\\cscript.exe'\n",
    "      - '*\\System32\\wscript.exe'\n",
    "      - '*\\System32\\mshta.exe'\n",
    "      - '*\\winword.exe'\n",
    "      - '*\\excel.exe'\n",
    "      TargetImage: '*\\SysWOW64\\\\*'\n",
    "      StartModule: null\n",
    "    condition: selection\n",
    "  tags:\n",
    "  - attack.execution\n",
    "  - attack.t1055\n",
    "  - attack.t1064\n",
    "  falsepositives:\n",
    "  - unknown\n",
    "  level: high\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-endpoint-winevent-sysmon-*', 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:\"8\" AND process_path.keyword:(*\\\\System32\\\\cscript.exe OR *\\\\System32\\\\wscript.exe OR *\\\\System32\\\\mshta.exe OR *\\\\winword.exe OR *\\\\excel.exe) AND target_process_path.keyword:*\\\\SysWOW64\\\\* AND NOT _exists_:thread_start_module)')\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
}