mirror of https://github.com/infosecn1nja/HELK.git
142 lines
3.7 KiB
Plaintext
142 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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"# First time seen remote named pipe\n",
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"This detection excludes known namped pipes accessible remotely and notify on newly observed ones, may help to detect lateral movement and remote exec using named pipes"
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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: First time seen remote named pipe\n",
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" id: 52d8b0c6-53d6-439a-9e41-52ad442ad9ad\n",
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" description: This detection excludes known namped pipes accessible remotely and\n",
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" notify on newly observed ones, may help to detect lateral movement and remote\n",
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" exec using named pipes\n",
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" author: Samir Bousseaden\n",
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" references:\n",
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" - https://twitter.com/menasec1/status/1104489274387451904\n",
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" tags:\n",
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" - attack.lateral_movement\n",
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" - attack.t1077\n",
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" logsource:\n",
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" product: windows\n",
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" service: security\n",
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" description: The advanced audit policy setting \"Object Access > Audit Detailed\n",
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" File Share\" must be configured for Success/Failure\n",
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" category: null\n",
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" detection:\n",
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" selection1:\n",
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" EventID: 5145\n",
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" ShareName: \\\\*\\IPC$\n",
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" selection2:\n",
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" EventID: 5145\n",
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" ShareName: \\\\*\\IPC$\n",
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" RelativeTargetName:\n",
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" - atsvc\n",
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" - samr\n",
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" - lsarpc\n",
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" - winreg\n",
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" - netlogon\n",
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" - srvsvc\n",
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" - protected_storage\n",
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" - wkssvc\n",
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" - browser\n",
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" - netdfs\n",
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" condition: selection1 and not selection2\n",
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" falsepositives:\n",
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" - update the excluded named pipe to filter out any newly observed legit named pipe\n",
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" level: high\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-endpoint-winevent-security-*', 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='((event_id:\"5145\" AND share_name.keyword:\\\\*\\\\IPC$) AND (NOT (event_id:\"5145\" AND share_name.keyword:\\\\*\\\\IPC$ AND share_relative_target_name:(\"atsvc\" OR \"samr\" OR \"lsarpc\" OR \"winreg\" OR \"netlogon\" OR \"srvsvc\" OR \"protected_storage\" OR \"wkssvc\" OR \"browser\" OR \"netdfs\"))))')\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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