mirror of https://github.com/infosecn1nja/HELK.git
134 lines
3.0 KiB
Plaintext
134 lines
3.0 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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"# RDP over Reverse SSH Tunnel\n",
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"Detects svchost hosting RDP termsvcs communicating with the loopback address and on TCP port 3389"
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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: RDP over Reverse SSH Tunnel\n",
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" id: 5f699bc5-5446-4a4a-a0b7-5ef2885a3eb4\n",
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" status: experimental\n",
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" description: Detects svchost hosting RDP termsvcs communicating with the loopback\n",
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" address and on TCP port 3389\n",
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" references:\n",
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" - https://twitter.com/SBousseaden/status/1096148422984384514\n",
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" author: Samir Bousseaden\n",
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" date: 2019/02/16\n",
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" tags:\n",
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" - attack.defense_evasion\n",
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" - attack.command_and_control\n",
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" - attack.t1076\n",
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" - car.2013-07-002\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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" category: null\n",
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" detection:\n",
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" selection:\n",
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" EventID: 3\n",
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" Image: '*\\svchost.exe'\n",
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" Initiated: 'true'\n",
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" SourcePort: 3389\n",
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" DestinationIp:\n",
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" - 127.*\n",
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" - ::1\n",
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" condition: selection\n",
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" falsepositives:\n",
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" - unknown\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-sysmon-*', 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:\"3\" AND process_path.keyword:*\\\\svchost.exe AND network_initiated:\"true\" AND src_port:\"3389\" AND dst_ip_addr.keyword:(127.* OR \\:\\:1))')\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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