mirror of https://github.com/infosecn1nja/HELK.git
136 lines
3.3 KiB
Plaintext
136 lines
3.3 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 HWP Sub Processes\n",
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"Detects suspicious Hangul Word Processor (Hanword) sub processes that could indicate an exploitation"
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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 HWP Sub Processes\n",
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" id: 023394c4-29d5-46ab-92b8-6a534c6f447b\n",
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" description: Detects suspicious Hangul Word Processor (Hanword) sub processes that\n",
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" could indicate an exploitation\n",
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" status: experimental\n",
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" references:\n",
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" - https://www.securitynewspaper.com/2016/11/23/technical-teardown-exploit-malware-hwp-files/\n",
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" - https://www.hybrid-analysis.com/search?query=context:74940dcc5b38f9f9b1a0fea760d344735d7d91b610e6d5bd34533dd0153402c5&from_sample=5db135000388385a7644131f&block_redirect=1\n",
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" - https://twitter.com/cyberwar_15/status/1187287262054076416\n",
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" - https://blog.alyac.co.kr/1901\n",
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" - https://en.wikipedia.org/wiki/Hangul_(word_processor)\n",
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" tags:\n",
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" - attack.execution\n",
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" - attack.defense_evasion\n",
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" - attack.initial_access\n",
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" - attack.t1059\n",
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" - attack.t1202\n",
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" - attack.t1193\n",
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" - attack.g0032\n",
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" author: Florian Roth\n",
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" date: 2019/10/24\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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" ParentImage: '*\\Hwp.exe'\n",
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" Image: '*\\gbb.exe'\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-*', 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_parent_path.keyword:*\\\\Hwp.exe AND process_path.keyword:*\\\\gbb.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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