HELK/docker/helk-jupyter/notebooks/sigma/apt_chafer_mar18.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Chafer Activity\n",
    "Detects Chafer activity attributed to OilRig as reported in Nyotron report in March 2018"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Rule Content\n",
    "```\n",
    "- action: global\n",
    "  title: Chafer Activity\n",
    "  id: 53ba33fd-3a50-4468-a5ef-c583635cfa92\n",
    "  description: Detects Chafer activity attributed to OilRig as reported in Nyotron\n",
    "    report in March 2018\n",
    "  references:\n",
    "  - https://nyotron.com/nyotron-discovers-next-generation-oilrig-attacks/\n",
    "  tags:\n",
    "  - attack.persistence\n",
    "  - attack.g0049\n",
    "  - attack.t1053\n",
    "  - attack.s0111\n",
    "  - attack.defense_evasion\n",
    "  - attack.t1112\n",
    "  date: 2018/03/23\n",
    "  modified: 2019/03/01\n",
    "  author: Florian Roth, Markus Neis\n",
    "  detection:\n",
    "    condition: 1 of them\n",
    "  falsepositives:\n",
    "  - Unknown\n",
    "  level: critical\n",
    "- logsource:\n",
    "    product: windows\n",
    "    service: system\n",
    "  detection:\n",
    "    selection_service:\n",
    "      EventID: 7045\n",
    "      ServiceName:\n",
    "      - SC Scheduled Scan\n",
    "      - UpdatMachine\n",
    "- logsource:\n",
    "    product: windows\n",
    "    service: security\n",
    "  detection:\n",
    "    selection_service:\n",
    "      EventID: 4698\n",
    "      TaskName:\n",
    "      - SC Scheduled Scan\n",
    "      - UpdatMachine\n",
    "- logsource:\n",
    "    product: windows\n",
    "    service: sysmon\n",
    "  detection:\n",
    "    selection_reg1:\n",
    "      EventID: 13\n",
    "      TargetObject:\n",
    "      - '*SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\UMe'\n",
    "      - '*SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\UT'\n",
    "      EventType: SetValue\n",
    "    selection_reg2:\n",
    "      EventID: 13\n",
    "      TargetObject: '*\\Control\\SecurityProviders\\WDigest\\UseLogonCredential'\n",
    "      EventType: SetValue\n",
    "      Details: DWORD (0x00000001)\n",
    "- logsource:\n",
    "    category: process_creation\n",
    "    product: windows\n",
    "  detection:\n",
    "    selection_process1:\n",
    "      CommandLine:\n",
    "      - '*\\Service.exe i'\n",
    "      - '*\\Service.exe u'\n",
    "      - '*\\microsoft\\Taskbar\\autoit3.exe'\n",
    "      - C:\\wsc.exe*\n",
    "    selection_process2:\n",
    "      Image: '*\\Windows\\Temp\\DB\\\\*.exe'\n",
    "    selection_process3:\n",
    "      CommandLine: '*\\nslookup.exe -q=TXT*'\n",
    "      ParentImage: '*\\Autoit*'\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:\"7045\" AND service_name:(\"SC\\ Scheduled\\ Scan\" OR \"UpdatMachine\"))')\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='(event_id:\"4698\" AND task_name:(\"SC\\ Scheduled\\ Scan\" OR \"UpdatMachine\"))')\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='(event_id:\"13\" AND event_type:\"SetValue\" AND (registry_key_path.keyword:(*SOFTWARE\\\\Microsoft\\\\Windows\\\\CurrentVersion\\\\UMe OR *SOFTWARE\\\\Microsoft\\\\Windows\\\\CurrentVersion\\\\UT) OR (registry_key_path.keyword:*\\\\Control\\\\SecurityProviders\\\\WDigest\\\\UseLogonCredential AND registry_key_value:\"DWORD\\ \\(0x00000001\\)\")))')\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_command_line.keyword:(*\\\\Service.exe\\ i OR *\\\\Service.exe\\ u OR *\\\\microsoft\\\\Taskbar\\\\autoit3.exe OR C\\:\\\\wsc.exe*) OR process_path.keyword:*\\\\Windows\\\\Temp\\\\DB\\\\*.exe OR (process_command_line.keyword:*\\\\nslookup.exe\\ \\-q\\=TXT* AND process_parent_path.keyword:*\\\\Autoit*))')\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
}