mirror of https://github.com/infosecn1nja/HELK.git
147 lines
3.5 KiB
Plaintext
147 lines
3.5 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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"# CreateMiniDump Hacktool\n",
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"Detects the use of CreateMiniDump hack tool used to dump the LSASS process memory for credential extraction on the attacker's machine"
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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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"- action: global\n",
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" title: CreateMiniDump Hacktool\n",
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" id: 36d88494-1d43-4dc0-b3fa-35c8fea0ca9d\n",
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" description: Detects the use of CreateMiniDump hack tool used to dump the LSASS\n",
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" process memory for credential extraction on the attacker's machine\n",
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" author: Florian Roth\n",
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" references:\n",
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" - https://ired.team/offensive-security/credential-access-and-credential-dumping/dumping-lsass-passwords-without-mimikatz-minidumpwritedump-av-signature-bypass\n",
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" date: 2019/12/22\n",
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" tags:\n",
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" - attack.credential_access\n",
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" - attack.t1003\n",
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" falsepositives:\n",
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" - Unknown\n",
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" level: high\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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" detection:\n",
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" selection1:\n",
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" Image|contains: \\CreateMiniDump.exe\n",
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" selection2:\n",
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" Imphash: 4a07f944a83e8a7c2525efa35dd30e2f\n",
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" condition: 1 of them\n",
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"- logsource:\n",
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" product: windows\n",
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" service: sysmon\n",
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" detection:\n",
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" selection:\n",
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" EventID: 11\n",
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" TargetFileName|contains: '*\\lsass.dmp'\n",
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" condition: 1 of them\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:*\\\\CreateMiniDump.exe* OR hash_imphash:\"4a07f944a83e8a7c2525efa35dd30e2f\")')\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": "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='(event_id:\"11\" AND TargetFileName.keyword:*\\\\lsass.dmp*)')\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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