HELK/docker/helk-jupyter/notebooks/sigma/win_mal_service_installs.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Malicious Service Installations\n",
    "Detects known malicious service installs that only appear in cases of lateral movement, credential dumping and other suspicious activity"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Rule Content\n",
    "```\n",
    "- title: Malicious Service Installations\n",
    "  id: 5a105d34-05fc-401e-8553-272b45c1522d\n",
    "  description: Detects known malicious service installs that only appear in cases\n",
    "    of lateral movement, credential dumping and other suspicious activity\n",
    "  author: Florian Roth\n",
    "  tags:\n",
    "  - attack.persistence\n",
    "  - attack.privilege_escalation\n",
    "  - attack.t1050\n",
    "  - car.2013-09-005\n",
    "  logsource:\n",
    "    product: windows\n",
    "    service: system\n",
    "    category: null\n",
    "  detection:\n",
    "    selection:\n",
    "      EventID: 7045\n",
    "    malsvc_wce:\n",
    "      ServiceName:\n",
    "      - WCESERVICE\n",
    "      - WCE SERVICE\n",
    "    malsvc_paexec:\n",
    "      ServiceFileName: '*\\PAExec*'\n",
    "    malsvc_winexe:\n",
    "      ServiceFileName: winexesvc.exe*\n",
    "    malsvc_pwdumpx:\n",
    "      ServiceFileName: '*\\DumpSvc.exe'\n",
    "    malsvc_wannacry:\n",
    "      ServiceName: mssecsvc2.0\n",
    "    malsvc_persistence:\n",
    "      ServiceFileName: '* net user *'\n",
    "    malsvc_others:\n",
    "      ServiceName:\n",
    "      - pwdump*\n",
    "      - gsecdump*\n",
    "      - cachedump*\n",
    "    condition: selection and 1 of malsvc_*\n",
    "  falsepositives:\n",
    "  - Penetration testing\n",
    "  level: critical\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-system-*', 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:\"7045\" AND (service_name:(\"WCESERVICE\" OR \"WCE\\ SERVICE\") OR service_image_path.keyword:*\\\\PAExec* OR service_image_path.keyword:winexesvc.exe* OR service_image_path.keyword:*\\\\DumpSvc.exe OR service_name:\"mssecsvc2.0\" OR service_image_path.keyword:*\\ net\\ user\\ * OR service_name.keyword:(pwdump* OR gsecdump* OR cachedump*)))')\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()"
   ]
  }
 ],
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 "nbformat": 4,
 "nbformat_minor": 4
}