{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Bitsadmin Download\n",
    "Detects usage of bitsadmin downloading a file"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Rule Content\n",
    "```\n",
    "- title: Bitsadmin Download\n",
    "  id: d059842b-6b9d-4ed1-b5c3-5b89143c6ede\n",
    "  status: experimental\n",
    "  description: Detects usage of bitsadmin downloading a file\n",
    "  references:\n",
    "  - https://blog.netspi.com/15-ways-to-download-a-file/#bitsadmin\n",
    "  - https://isc.sans.edu/diary/22264\n",
    "  tags:\n",
    "  - attack.defense_evasion\n",
    "  - attack.persistence\n",
    "  - attack.t1197\n",
    "  - attack.s0190\n",
    "  date: 2017/03/09\n",
    "  modified: 2019/12/06\n",
    "  author: Michael Haag\n",
    "  logsource:\n",
    "    category: process_creation\n",
    "    product: windows\n",
    "    service: null\n",
    "  detection:\n",
    "    selection1:\n",
    "      Image:\n",
    "      - '*\\bitsadmin.exe'\n",
    "      CommandLine:\n",
    "      - '* /transfer *'\n",
    "    selection2:\n",
    "      CommandLine:\n",
    "      - '*copy bitsadmin.exe*'\n",
    "    condition: selection1 or selection2\n",
    "  fields:\n",
    "  - CommandLine\n",
    "  - ParentCommandLine\n",
    "  falsepositives:\n",
    "  - Some legitimate apps use this, but limited.\n",
    "  level: medium\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='((process_path.keyword:(*\\\\bitsadmin.exe) AND process_command_line.keyword:(*\\ \\/transfer\\ *)) OR process_command_line.keyword:(*copy\\ bitsadmin.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
}