ioc-extractor

IoC extractor

IoC extractor is an npm package for extracting common IoC (Indicator of Compromise) from a block of text.

Note: the package is highly influenced by cacador.

Installation

npm install -g ioc-extractor
# or if you want to use ioc-extractor as a library in your JS/TS project
npm install ioc-extractor

Usage

As a CLI

$ ioc-extractor --help
Usage: ioc-extractor [options]

Options:
  --no-strict            Disable strict option
  --no-refang            Disable refang option
  --no-sort              Disable sort option
  -p, --punycode         Enable punycode option
  -o, --only <types...>  Show only specific IoC types
  -h, --help             display help for command

$ echo "1.1.1.1 8.8.8.8 example.com" | ioc-extractor | jq
{
  "asns": [],
  "btcs": [],
  "cves": [],
  "domains": [
    "example.com"
  ],
  "emails": [],
  "eths": [],
  "gaPubIDs": [],
  "gaTrackIDs": [],
  "ipv4s": [
    "1.1.1.1",
    "8.8.8.8"
  ],
  "ipv6s": [],
  "macAddresses": [],
  "md5s": [],
  "sha1s": [],
  "sha256s": [],
  "sha512s": [],
  "ssdeeps": [],
  "urls": [],
  "xmrs": []
}

$ echo "1.1.1.1 8.8.8.8" | ioc-extractor --only ipv4s | jq
{
  "ipv4s": [
    "1.1.1.1",
    "8.8.8.8"
  ]
}

As a Library

import { extractIOC } from "ioc-extractor";

const input = "1.1.1[.]1 google(.)com f6f8179ac71eaabff12b8c024342109b";
const ioc = extractIOC(input);
console.log(ioc.md5s);
// => ['f6f8179ac71eaabff12b8c024342109b']
console.log(ioc.ipv4s);
// => ['1.1.1.1']
console.log(ioc.domains);
// => ['google.com']

extractIOC takes the following options:

• punycode
• refang
• sort
• strict

If you want to extract a specific type of IoC, you can use an extract function by IoC type.

import {
  refang,
  extractDomains,
  extractIPv4s,
  extractMD5s,
} from "ioc-extractor";

const input = "1.1.1[.]1 google(.)com f6f8179ac71eaabff12b8c024342109b";
const refanged = refang(input);
// => 1.1.1.1 google.com f6f8179ac71eaabff12b8c024342109b

const ipv4s = extractIPv4s(refanged);
// => ['1.1.1.1']

const domains = extractDomains(refanged);
// => ['google.com']

const md5s = extractMD5s(refanged);
// => ['f6f8179ac71eaabff12b8c024342109b']

Network related extract functions (e.g. extractDomains) can take the following options:

• sort
• strict

See docs for more details.

Alternatively, if you want to extract a list of specific IoC types at once, you can use partialExtractIOC.

import { partialExtractIOC } from "ioc-extractor";

const input = "1.1.1[.]1 google(.)com f6f8179ac71eaabff12b8c024342109b";
const ioc = partialExtractIOC(input, ["ipv4s", "domains"]);
console.log(ioc);
// => {"ipv4s":["1.1.1.1"],"domains":["google.com"]}

IoC Types

This package supports the following IoCs:

• Hashes: MD5, SHA1, SHA256, SHA512, SSDEEP
• Networks: domain, email, IPv4, IPv6, URL, ASN
• Hardwares: MAC address
• Utilities: CVE (CVE ID)
• Cryptocurrencies: BTC (BTC address), ETH (ETH address), XMR (XMR address)
• Trackers: GA track ID (Google Analytics tracking ID), GA pub ID (Google Adsense Publisher ID)

Refang Techniques

For Networks IoCs, the following refang techniques are supported:

Techniques	Defanged	Refanged
. in spaces	1.1.1 . 1	1.1.1.1
. in brackets, parentheses, etc.	1.1.1[.]1	1.1.1.1
dot in brackets, parentheses, etc.	example[dot]com	example.com
Back slash before .	example\.com	example.com
/ in brackets, parentheses, etc.	http://example.com[/]path	http://example.com/path
:// in brackets, parentheses, etc.	http[://]example.com	http://example.com
: in brackets, parentheses, etc.	http[:]//example.com	http://example.com
@ in brackets, parentheses, etc.	test[@]example.com	[e-mail]
at in brackets, parentheses, etc.	test[at]example.com	[e-mail]
hxxp	hxxps://example.com	https://example.com
Partial	1.1.1[.1	1.1.1.1
Any combination	hxxps[:]//test\.example[.)com[/]path	https://test.example.com/path

Options

strict

Whether to do strict TLD matching or not. Defaults to true.

refang

Whether to do refang or not. Defaults to false.

punycode

Whether to do Punycode conversion or not. Defaults to false.

sort

Whether to sort values or not. Defaults to true.

Alternatives

• cmu-sei/cyobstract
• fhightower/ioc-finder
• InQuest/python-iocextract
• sroberts/cacador