GitHub - assafmo/xioc: Extract indicators of compromise from text, including "escaped" ones.

2 min read Original article ↗

xioc

Extract indicators of compromise from text, including "escaped" ones like hxxp://banana.com, 1.1.1[.]1 and phish at malicious dot com.

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Installation

  • Download a precompiled binary from https://github.com/assafmo/xioc/releases

  • Or... Use go get:

    go get -u github.com/assafmo/xioc

  • Or... Use snap install (Ubuntu):

  • Or use Ubuntu PPA:

    curl -SsL https://assafmo.github.io/ppa/ubuntu/KEY.gpg | sudo apt-key add -
sudo curl -SsL -o /etc/apt/sources.list.d/assafmo.list https://assafmo.github.io/ppa/ubuntu/assafmo.list
sudo apt update
sudo apt install xioc

Features

  • Extract IOCs (indicators of compromise) from an input text:
    • IPv4
    • IPv6
    • Domain
    • URL
    • Email
    • MD5
    • SHA1
    • SHA256
  • Translate some kinds of "escaping"/"defanging" techniques:
    • (dot), [dot], (.), [.], {.} to ..
    • (at), [at], (@), [@], {@} to @.
    • hxxp, hzzzp, hxxxp, hXXp, h__p, h**p to http.
  • Command line interface
  • Go library

Command line usage

$ xioc -h
Usage of xioc:
  -o string
        Extract only specified types.
        Types must be comma seperated. E.g: xioc -o "ip4,domain,url,md5"
        Available types:
                - ip4
                - ip6
                - domain
                - url
                - email
                - md5
                - sha1
                - sha256
  -v    Print version and exit
$ REPORT="https://unit42.paloaltonetworks.com/digital-quartermaster-scenario-demonstrated-in-attacks-against-the-mongolian-government/"
$ lynx -dump "$REPORT" | xioc
sha256  5beb50d95c1e720143ca0004f5172cb8881d75f6c9f434ceaff59f34fa1fe378
domain  energy.gov.mn
email   altangadas@energy.gov.mn
sha256  10090692ff40758a08bd66f806e0f2c831b4b9742bbf3d19c250e778de638f57
# ...
$ REPORT="https://unit42.paloaltonetworks.com/digital-quartermaster-scenario-demonstrated-in-attacks-against-the-mongolian-government/"
$ lynx -dump "$REPORT" | xioc -o email,sha256
sha256  5beb50d95c1e720143ca0004f5172cb8881d75f6c9f434ceaff59f34fa1fe378
email   altangadas@energy.gov.mn
sha256  10090692ff40758a08bd66f806e0f2c831b4b9742bbf3d19c250e778de638f57
email   ganbat_g@bpo.gov.mn
# ...

Library usage

Full API:
GoDoc

package main

import (
	"fmt"

	"github.com/assafmo/xioc/xioc"
)

func main() {
	input := `e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
	banana.com
	hxxp://i.robot.com/robots.txt
	1.2.3.4
	1.1.1[.]1
	info at gmail dot com
	hxxps://m.twitter[dot]com/`

	fmt.Println(xioc.ExtractDomains(input)) // => [i.robot.com m.twitter.com gmail.com banana.com]
	fmt.Println(xioc.ExtractSHA256s(input)) // => [e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855]
	fmt.Println(xioc.ExtractMD5s(input))    // => []
	fmt.Println(xioc.ExtractIPv4s(input))   // => [1.2.3.4 1.1.1.1]
	fmt.Println(xioc.ExtractURLs(input))    // => [http://i.robot.com/robots.txt https://m.twitter.com/]
	fmt.Println(xioc.ExtractEmails(input))  // => [info@gmail.com]
}

Sources