mirror of https://github.com/MISP/misp-rfc
337 lines
11 KiB
Plaintext
Executable File
337 lines
11 KiB
Plaintext
Executable File
|
||
|
||
|
||
|
||
Network Working Group A. Dulaunoy
|
||
Internet-Draft A. Iklody
|
||
Intended status: Informational D. Servili
|
||
Expires: October 3, 2018 CIRCL
|
||
April 1, 2018
|
||
|
||
|
||
MISP galaxy format
|
||
draft-dulaunoy-misp-galaxy-format
|
||
|
||
Abstract
|
||
|
||
This document describes the MISP galaxy format which describes a
|
||
simple JSON format to represent galaxies and clusters that can be
|
||
attached to MISP events or attributes. A public directory of MISP
|
||
galaxies is available and relies on the MISP galaxy format. MISP
|
||
galaxies are used to add further informations on a MISP event. MISP
|
||
galaxy is a public repository [MISP-G] of known malware, threats
|
||
actors and various other collections of data that can be used to
|
||
mark, classify or label data in threat information sharing.
|
||
|
||
Status of This Memo
|
||
|
||
This Internet-Draft is submitted in full conformance with the
|
||
provisions of BCP 78 and BCP 79.
|
||
|
||
Internet-Drafts are working documents of the Internet Engineering
|
||
Task Force (IETF). Note that other groups may also distribute
|
||
working documents as Internet-Drafts. The list of current Internet-
|
||
Drafts is at http://datatracker.ietf.org/drafts/current/.
|
||
|
||
Internet-Drafts are draft documents valid for a maximum of six months
|
||
and may be updated, replaced, or obsoleted by other documents at any
|
||
time. It is inappropriate to use Internet-Drafts as reference
|
||
material or to cite them other than as "work in progress."
|
||
|
||
This Internet-Draft will expire on October 3, 2018.
|
||
|
||
Copyright Notice
|
||
|
||
Copyright (c) 2018 IETF Trust and the persons identified as the
|
||
document authors. All rights reserved.
|
||
|
||
This document is subject to BCP 78 and the IETF Trust's Legal
|
||
Provisions Relating to IETF Documents
|
||
(http://trustee.ietf.org/license-info) in effect on the date of
|
||
publication of this document. Please review these documents
|
||
carefully, as they describe your rights and restrictions with respect
|
||
|
||
|
||
|
||
Dulaunoy, et al. Expires October 3, 2018 [Page 1]
|
||
|
||
Internet-Draft MISP galaxy format April 2018
|
||
|
||
|
||
to this document. Code Components extracted from this document must
|
||
include Simplified BSD License text as described in Section 4.e of
|
||
the Trust Legal Provisions and are provided without warranty as
|
||
described in the Simplified BSD License.
|
||
|
||
Table of Contents
|
||
|
||
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
|
||
1.1. Conventions and Terminology . . . . . . . . . . . . . . . 2
|
||
2. Format . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
|
||
2.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . 3
|
||
2.2. values . . . . . . . . . . . . . . . . . . . . . . . . . 3
|
||
2.3. meta . . . . . . . . . . . . . . . . . . . . . . . . . . 3
|
||
3. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 4
|
||
4. References . . . . . . . . . . . . . . . . . . . . . . . . . 4
|
||
4.1. Normative References . . . . . . . . . . . . . . . . . . 4
|
||
4.2. Informative References . . . . . . . . . . . . . . . . . 5
|
||
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 5
|
||
|
||
1. Introduction
|
||
|
||
Sharing threat information became a fundamental requirements on the
|
||
Internet, security and intelligence community at large. Threat
|
||
information can include indicators of compromise, malicious file
|
||
indicators, financial fraud indicators or even detailed information
|
||
about a threat actor. Some of these informations, such as malware or
|
||
threat actors are common to several security events. MISP galaxy is
|
||
a public repository [MISP-G] of known malware, threats actors and
|
||
various other collections of data that can be used to mark, classify
|
||
or label data in threat information sharing.
|
||
|
||
In the MISP galaxy context, clusters help analysts to give more
|
||
informations about their cybersecurity events, indicators or threats.
|
||
MISP galaxies can be used for classification, filtering, triggering
|
||
actions or visualisation depending on their use in threat
|
||
intelligence platforms such as MISP [MISP-P].
|
||
|
||
1.1. Conventions and Terminology
|
||
|
||
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
|
||
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
|
||
document are to be interpreted as described in RFC 2119 [RFC2119].
|
||
|
||
2. Format
|
||
|
||
A cluster is composed of a value (MUST), a description (OPTIONAL) and
|
||
metadata (OPTIONAL).
|
||
|
||
|
||
|
||
|
||
Dulaunoy, et al. Expires October 3, 2018 [Page 2]
|
||
|
||
Internet-Draft MISP galaxy format April 2018
|
||
|
||
|
||
Clusters are represented as a JSON [RFC4627] dictionary.
|
||
|
||
2.1. Overview
|
||
|
||
The MISP galaxy format uses the JSON [RFC4627] format. Each galaxy
|
||
is represented as a JSON object with meta information including the
|
||
following fields: name, uuid, description, version, type, authors,
|
||
source, values.
|
||
|
||
name defines the name of the galaxy. The name is represented as a
|
||
string and MUST be present. The uuid represents the Universally
|
||
Unique IDentifier (UUID) [RFC4122] of the object reference. The uuid
|
||
MUST be preserved. For any updates or transfer of the same object
|
||
reference. UUID version 4 is RECOMMENDED when assigning it to a new
|
||
object reference and MUST be present. The description is represented
|
||
as a string and MUST be present. The uuid is represented as a string
|
||
and MUST be present. The version is represented as a decimal and
|
||
MUST be present. The source is represented as a string and MUST be
|
||
present. Authors are represented as an array containing one or more
|
||
author and MUST be present.
|
||
|
||
Values are represented as an array containing one or more value and
|
||
MUST be present. Values defines all values available in the galaxy.
|
||
|
||
2.2. values
|
||
|
||
The values array contains one or more JSON objects which represents
|
||
all the possible values in the galaxy. The JSON object contains four
|
||
fields: value, description, uuid and meta. The value is represented
|
||
as a string and MUST be present. The description is represented as a
|
||
string and SHOULD be present. The meta or metadata is represented as
|
||
a JSON list and SHOULD be present. The uuid represents the
|
||
Universally Unique IDentifier (UUID) [RFC4122] of the value
|
||
reference. The uuid SHOULD can be present and MUST be preserved.
|
||
|
||
2.3. meta
|
||
|
||
Meta contains a list of custom defined JSON key value pairs. Users
|
||
SHOULD reuse commonly used keys such as 'properties, complexity,
|
||
effectiveness, country, possible_issues, colour, motive, impact,
|
||
refs, synonyms, derivated_from, status, date, encryption, extensions,
|
||
ransomnotes' wherever applicable.
|
||
|
||
properties is used to provide clusters with additional properties.
|
||
Properties are represented as an array containing one or more strings
|
||
ans MAY be present.
|
||
|
||
|
||
|
||
|
||
|
||
Dulaunoy, et al. Expires October 3, 2018 [Page 3]
|
||
|
||
Internet-Draft MISP galaxy format April 2018
|
||
|
||
|
||
complexity, effectiveness, impact, possible_issues MAY be used to
|
||
give further information in preventive-measure galaxy. complexity is
|
||
represented by an enumerated value from a fixed vocabulary and SHALL
|
||
be present. effectiveness is represented by an enumerated value from
|
||
a fixed vocabulary and SHALL be present. impact is represented by an
|
||
enumerated value from a fixed vocabulary and SHALL be present.
|
||
possible_issues is represented as a string and SHOULD be present.
|
||
|
||
country, motive MAY be used to give further information in threat-
|
||
actor galaxy. country is represented as a string and SHOULD be
|
||
present. motive is represented as a string and SHOULD be present.
|
||
|
||
colour fields MAY be used at predicates or values level to set a
|
||
specify colour that MAY be used by the implementation. The colour
|
||
field is described as an RGB colour fill in hexadecimal
|
||
representation.
|
||
|
||
encryption, extensions, ransomnotes MAY be used to give further
|
||
information in ransomware galaxy. encryption is represented as a
|
||
string and SHALL be present. extensions is represented as an array
|
||
containing one or more strings and SHALL be present. ransomnotes is
|
||
represented as an array containing one or more strings ans SHALL be
|
||
present.
|
||
|
||
date, status MAY be used to give time information about an cluster.
|
||
date is represented as a string describing a time or period and SHALL
|
||
be present. status is represented as a string describing the current
|
||
status of the clusters. It MAY also describe a time or period and
|
||
SHALL be present.
|
||
|
||
derivated_from, refs, synonyms SHALL be used to give further
|
||
informations. refs is represented as an containing one or ore string
|
||
and SHALL be present. synonyms is represented as an containing one or
|
||
ore string and SHALL be present. derivated_from is represented as an
|
||
containing one or ore string and SHALL be present.
|
||
|
||
3. Acknowledgements
|
||
|
||
The authors wish to thank all the MISP community who are supporting
|
||
the creation of open standards in threat intelligence sharing.
|
||
|
||
4. References
|
||
|
||
4.1. Normative References
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
Dulaunoy, et al. Expires October 3, 2018 [Page 4]
|
||
|
||
Internet-Draft MISP galaxy format April 2018
|
||
|
||
|
||
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
|
||
Requirement Levels", BCP 14, RFC 2119,
|
||
DOI 10.17487/RFC2119, March 1997, <https://www.rfc-
|
||
editor.org/info/rfc2119>.
|
||
|
||
[RFC4122] Leach, P., Mealling, M., and R. Salz, "A Universally
|
||
Unique IDentifier (UUID) URN Namespace", RFC 4122,
|
||
DOI 10.17487/RFC4122, July 2005, <https://www.rfc-
|
||
editor.org/info/rfc4122>.
|
||
|
||
[RFC4627] Crockford, D., "The application/json Media Type for
|
||
JavaScript Object Notation (JSON)", RFC 4627,
|
||
DOI 10.17487/RFC4627, July 2006, <https://www.rfc-
|
||
editor.org/info/rfc4627>.
|
||
|
||
4.2. Informative References
|
||
|
||
[MISP-G] MISP, , "MISP Galaxy -", <https://github.com/MISP/misp-
|
||
galaxy>.
|
||
|
||
[MISP-P] MISP, , "MISP Project - Malware Information Sharing
|
||
Platform and Threat Sharing", <https://github.com/MISP>.
|
||
|
||
Authors' Addresses
|
||
|
||
Alexandre Dulaunoy
|
||
Computer Incident Response Center Luxembourg
|
||
16, bd d'Avranches
|
||
Luxembourg L-1611
|
||
Luxembourg
|
||
|
||
Phone: +352 247 88444
|
||
Email: alexandre.dulaunoy@circl.lu
|
||
|
||
|
||
Andras Iklody
|
||
Computer Incident Response Center Luxembourg
|
||
16, bd d'Avranches
|
||
Luxembourg L-1611
|
||
Luxembourg
|
||
|
||
Phone: +352 247 88444
|
||
Email: andras.iklody@circl.lu
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
Dulaunoy, et al. Expires October 3, 2018 [Page 5]
|
||
|
||
Internet-Draft MISP galaxy format April 2018
|
||
|
||
|
||
Deborah Servili
|
||
Computer Incident Response Center Luxembourg
|
||
16, bd d'Avranches
|
||
Luxembourg L-1611
|
||
Luxembourg
|
||
|
||
Phone: +352 247 88444
|
||
Email: deborah.servili@circl.lu
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
Dulaunoy, et al. Expires October 3, 2018 [Page 6]
|