mirror of https://github.com/infosecn1nja/HELK.git
146 lines
3.9 KiB
Plaintext
146 lines
3.9 KiB
Plaintext
{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"# Windows Processes Suspicious Parent Directory\n",
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"Detect suspicious parent processes of well-known Windows processes"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Rule Content\n",
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"```\n",
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"- title: Windows Processes Suspicious Parent Directory\n",
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" id: 96036718-71cc-4027-a538-d1587e0006a7\n",
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" status: experimental\n",
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" description: Detect suspicious parent processes of well-known Windows processes\n",
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" author: vburov\n",
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" references:\n",
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" - https://securitybytes.io/blue-team-fundamentals-part-two-windows-processes-759fe15965e2\n",
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" - https://www.carbonblack.com/2014/06/10/screenshot-demo-hunt-evil-faster-than-ever-with-carbon-black/\n",
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" - https://www.13cubed.com/downloads/windows_process_genealogy_v2.pdf\n",
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" - https://attack.mitre.org/techniques/T1036/\n",
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" date: 2019/02/23\n",
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" modified: 2019/08/20\n",
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" tags:\n",
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" - attack.defense_evasion\n",
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" - attack.t1036\n",
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" logsource:\n",
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" category: process_creation\n",
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" product: windows\n",
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" service: null\n",
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" detection:\n",
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" selection:\n",
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" Image:\n",
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" - '*\\svchost.exe'\n",
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" - '*\\taskhost.exe'\n",
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" - '*\\lsm.exe'\n",
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" - '*\\lsass.exe'\n",
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" - '*\\services.exe'\n",
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" - '*\\lsaiso.exe'\n",
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" - '*\\csrss.exe'\n",
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" - '*\\wininit.exe'\n",
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" - '*\\winlogon.exe'\n",
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" filter:\n",
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" ParentImage:\n",
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" - '*\\System32\\\\*'\n",
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" - '*\\SysWOW64\\\\*'\n",
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" - '*\\SavService.exe'\n",
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" - '*\\Windows Defender\\\\*\\MsMpEng.exe'\n",
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" filter_null:\n",
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" ParentImage: null\n",
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" condition: selection and not filter and not filter_null\n",
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" falsepositives:\n",
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" - Some security products seem to spawn these\n",
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" level: low\n",
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"\n",
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"```"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Querying Elasticsearch"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Import Libraries"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"from elasticsearch import Elasticsearch\n",
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"from elasticsearch_dsl import Search\n",
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"import pandas as pd"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Initialize Elasticsearch client"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"es = Elasticsearch(['http://helk-elasticsearch:9200'])\n",
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"searchContext = Search(using=es, index='logs-*', doc_type='doc')"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Run Elasticsearch Query"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"s = searchContext.query('query_string', query='((process_path.keyword:(*\\\\svchost.exe OR *\\\\taskhost.exe OR *\\\\lsm.exe OR *\\\\lsass.exe OR *\\\\services.exe OR *\\\\lsaiso.exe OR *\\\\csrss.exe OR *\\\\wininit.exe OR *\\\\winlogon.exe) AND (NOT (process_parent_path.keyword:(*\\\\System32\\\\* OR *\\\\SysWOW64\\\\* OR *\\\\SavService.exe OR *\\\\Windows\\ Defender\\\\*\\\\MsMpEng.exe)))) AND (NOT (NOT _exists_:process_parent_path)))')\n",
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"response = s.execute()\n",
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"if response.success():\n",
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" df = pd.DataFrame((d.to_dict() for d in s.scan()))"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Show Results"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"df.head()"
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]
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}
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],
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"metadata": {},
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"nbformat": 4,
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"nbformat_minor": 4
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}
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