mirror of https://github.com/infosecn1nja/HELK.git
158 lines
3.7 KiB
Plaintext
158 lines
3.7 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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"# PsExec Tool Execution\n",
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"Detects PsExec service installation and execution events (service and Sysmon)"
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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: PsExec Tool Execution\n",
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" id: 42c575ea-e41e-41f1-b248-8093c3e82a28\n",
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" status: experimental\n",
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" description: Detects PsExec service installation and execution events (service and\n",
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" Sysmon)\n",
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" author: Thomas Patzke\n",
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" references:\n",
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" - https://www.jpcert.or.jp/english/pub/sr/ir_research.html\n",
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" - https://jpcertcc.github.io/ToolAnalysisResultSheet\n",
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" tags:\n",
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" - attack.execution\n",
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" - attack.t1035\n",
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" - attack.s0029\n",
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" detection:\n",
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" condition: 1 of them\n",
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" fields:\n",
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" - EventID\n",
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" - CommandLine\n",
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" - ParentCommandLine\n",
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" - ServiceName\n",
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" - ServiceFileName\n",
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" falsepositives:\n",
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" - unknown\n",
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" level: low\n",
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"- logsource:\n",
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" product: windows\n",
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" service: system\n",
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" detection:\n",
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" service_installation:\n",
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" EventID: 7045\n",
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" ServiceName: PSEXESVC\n",
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" ServiceFileName: '*\\PSEXESVC.exe'\n",
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" service_execution:\n",
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" EventID: 7036\n",
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" ServiceName: PSEXESVC\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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" sysmon_processcreation:\n",
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" Image: '*\\PSEXESVC.exe'\n",
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" User: NT AUTHORITY\\SYSTEM\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='(service_name:\"PSEXESVC\" AND ((event_id:\"7045\" AND service_image_path.keyword:*\\\\PSEXESVC.exe) OR event_id:\"7036\"))')\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='(process_path.keyword:*\\\\PSEXESVC.exe AND user_account:\"NT\\ AUTHORITY\\\\SYSTEM\")')\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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