mirror of https://github.com/infosecn1nja/HELK.git
132 lines
3.5 KiB
Plaintext
132 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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"# Suspicious GUP Usage\n",
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"Detects execution of the Notepad++ updater in a suspicious directory, which is often used in DLL side-loading attacks"
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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: Suspicious GUP Usage\n",
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" id: 0a4f6091-223b-41f6-8743-f322ec84930b\n",
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" description: Detects execution of the Notepad++ updater in a suspicious directory,\n",
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" which is often used in DLL side-loading attacks\n",
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" status: experimental\n",
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" references:\n",
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" - https://www.fireeye.com/blog/threat-research/2018/09/apt10-targeting-japanese-corporations-using-updated-ttps.html\n",
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" tags:\n",
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" - attack.defense_evasion\n",
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" - attack.t1073\n",
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" author: Florian Roth\n",
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" date: 2019/02/06\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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" service: null\n",
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" detection:\n",
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" selection:\n",
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" Image: '*\\GUP.exe'\n",
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" filter:\n",
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" Image:\n",
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" - C:\\Users\\\\*\\AppData\\Local\\Notepad++\\updater\\gup.exe\n",
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" - C:\\Users\\\\*\\AppData\\Roaming\\Notepad++\\updater\\gup.exe\n",
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" - C:\\Program Files\\Notepad++\\updater\\gup.exe\n",
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" - C:\\Program Files (x86)\\Notepad++\\updater\\gup.exe\n",
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" condition: selection and not filter\n",
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" falsepositives:\n",
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" - Execution of tools named GUP.exe and located in folders different than Notepad++\\updater\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-*', 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:*\\\\GUP.exe AND (NOT (process_path.keyword:(C\\:\\\\Users\\\\*\\\\AppData\\\\Local\\\\Notepad\\+\\+\\\\updater\\\\gup.exe OR C\\:\\\\Users\\\\*\\\\AppData\\\\Roaming\\\\Notepad\\+\\+\\\\updater\\\\gup.exe OR C\\:\\\\Program\\ Files\\\\Notepad\\+\\+\\\\updater\\\\gup.exe OR C\\:\\\\Program\\ Files\\ \\(x86\\)\\\\Notepad\\+\\+\\\\updater\\\\gup.exe))))')\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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