mirror of https://github.com/infosecn1nja/HELK.git
135 lines
3.0 KiB
Plaintext
135 lines
3.0 KiB
Plaintext
{
|
|
"cells": [
|
|
{
|
|
"cell_type": "markdown",
|
|
"metadata": {},
|
|
"source": [
|
|
"# Suspicious Svchost Process\n",
|
|
"Detects a suspicious svchost process start"
|
|
]
|
|
},
|
|
{
|
|
"cell_type": "markdown",
|
|
"metadata": {},
|
|
"source": [
|
|
"## Rule Content\n",
|
|
"```\n",
|
|
"- title: Suspicious Svchost Process\n",
|
|
" id: 01d2e2a1-5f09-44f7-9fc1-24faa7479b6d\n",
|
|
" status: experimental\n",
|
|
" description: Detects a suspicious svchost process start\n",
|
|
" tags:\n",
|
|
" - attack.defense_evasion\n",
|
|
" - attack.t1036\n",
|
|
" author: Florian Roth\n",
|
|
" date: 2017/08/15\n",
|
|
" logsource:\n",
|
|
" category: process_creation\n",
|
|
" product: windows\n",
|
|
" service: null\n",
|
|
" detection:\n",
|
|
" selection:\n",
|
|
" Image: '*\\svchost.exe'\n",
|
|
" filter:\n",
|
|
" ParentImage:\n",
|
|
" - '*\\services.exe'\n",
|
|
" - '*\\MsMpEng.exe'\n",
|
|
" - '*\\Mrt.exe'\n",
|
|
" - '*\\rpcnet.exe'\n",
|
|
" - '*\\svchost.exe'\n",
|
|
" filter_null:\n",
|
|
" ParentImage: null\n",
|
|
" condition: selection and not filter and not filter_null\n",
|
|
" fields:\n",
|
|
" - CommandLine\n",
|
|
" - ParentCommandLine\n",
|
|
" falsepositives:\n",
|
|
" - Unknown\n",
|
|
" level: high\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='((process_path.keyword:*\\\\svchost.exe AND (NOT (process_parent_path.keyword:(*\\\\services.exe OR *\\\\MsMpEng.exe OR *\\\\Mrt.exe OR *\\\\rpcnet.exe OR *\\\\svchost.exe)))) AND (NOT (NOT _exists_:process_parent_path)))')\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()"
|
|
]
|
|
}
|
|
],
|
|
"metadata": {},
|
|
"nbformat": 4,
|
|
"nbformat_minor": 4
|
|
}
|