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

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# OceanLotus Registry Activity\n",
    "Detects registry keys created in OceanLotus (also known as APT32) attacks"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Rule Content\n",
    "```\n",
    "- title: OceanLotus Registry Activity\n",
    "  id: 4ac5fc44-a601-4c06-955b-309df8c4e9d4\n",
    "  status: experimental\n",
    "  description: Detects registry keys created in OceanLotus (also known as APT32) attacks\n",
    "  references:\n",
    "  - https://www.welivesecurity.com/2019/03/20/fake-or-fake-keeping-up-with-oceanlotus-decoys/\n",
    "  tags:\n",
    "  - attack.t1112\n",
    "  author: megan201296\n",
    "  date: 2019/04/14\n",
    "  logsource:\n",
    "    product: windows\n",
    "    service: sysmon\n",
    "    category: null\n",
    "  detection:\n",
    "    selection:\n",
    "      EventID: 13\n",
    "      TargetObject:\n",
    "      - '*\\SOFTWARE\\Classes\\CLSID\\{E08A0F4B-1F65-4D4D-9A09-BD4625B9C5A1}\\Model'\n",
    "      - '*\\SOFTWARE\\App\\AppXbf13d4ea2945444d8b13e2121cb6b663\\Application'\n",
    "      - '*\\SOFTWARE\\App\\AppXbf13d4ea2945444d8b13e2121cb6b663\\DefaultIcon'\n",
    "      - '*\\SOFTWARE\\App\\AppX70162486c7554f7f80f481985d67586d\\Application'\n",
    "      - '*\\SOFTWARE\\App\\AppX70162486c7554f7f80f481985d67586d\\DefaultIcon'\n",
    "      - '*\\SOFTWARE\\App\\AppX37cc7fdccd644b4f85f4b22d5a3f105a\\Application'\n",
    "      - '*\\SOFTWARE\\App\\AppX37cc7fdccd644b4f85f4b22d5a3f105a\\DefaultIcon'\n",
    "    condition: selection\n",
    "  falsepositives:\n",
    "  - Unknown\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-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:\"13\" AND registry_key_path.keyword:(*\\\\SOFTWARE\\\\Classes\\\\CLSID\\\\\\{E08A0F4B\\-1F65\\-4D4D\\-9A09\\-BD4625B9C5A1\\}\\\\Model OR *\\\\SOFTWARE\\\\App\\\\AppXbf13d4ea2945444d8b13e2121cb6b663\\\\Application OR *\\\\SOFTWARE\\\\App\\\\AppXbf13d4ea2945444d8b13e2121cb6b663\\\\DefaultIcon OR *\\\\SOFTWARE\\\\App\\\\AppX70162486c7554f7f80f481985d67586d\\\\Application OR *\\\\SOFTWARE\\\\App\\\\AppX70162486c7554f7f80f481985d67586d\\\\DefaultIcon OR *\\\\SOFTWARE\\\\App\\\\AppX37cc7fdccd644b4f85f4b22d5a3f105a\\\\Application OR *\\\\SOFTWARE\\\\App\\\\AppX37cc7fdccd644b4f85f4b22d5a3f105a\\\\DefaultIcon))')\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
}