Tool Object

Tool Tools are legitimate software that can be used by threat actors to perform attacks. Knowing how and when threat actors use such tools can be important for understanding how campaigns are executed. Unlike malware, these tools or software packages are often found on a system and have legitimate purposes for power users, system administrators, network administrators, or even normal users. Remote access tools (e.g., RDP) and network scanning tools (e.g., Nmap) are examples of Tools that may be used by a Threat Actor during an attack.

Property	Type	Description	Required?
description	MarkdownString	A description of object, which may be detailed.	✓
id	String	Globally unique URI identifying this object.	✓
labels	ToolLabelString List	The kind(s) of tool(s) being described.	✓
schema_version	String	CTIM schema version for this entity.	✓
short_description	MedStringString	A single line, short summary of the object.	✓
title	ShortStringString	A short title for this object, used as primary display and reference value.	✓
type	ToolTypeIdentifierString		✓
external_ids	String List	It is used to store a list of external identifiers that can be linked to the incident, providing a reliable and manageable way to correlate and group related events across multiple data sources. It is especially useful in larger organizations that rely on multiple security information and event management (SIEM) systems to detect security incidents. For instance, it can be used to track events across different network sensors, intrusion detection and prevention systems (IDPS), or log management platforms. The field can also be used to facilitate automation and orchestration workflows, where additional information can be shared among incident management systems. It can be used to cross-reference with other external tools such as threat intelligence feeds and vulnerability scanners.
external_references	ExternalReference Object List	Specifies a list of external references which refers to non-CTIM information. Similar to external_ids field with major differences: - external_ids field is used to store a list of external identifiers that can be used to link entities across different data sources. These identifiers are typically standardized and well-known, such as CVE IDs, US-CERT advisories, or other industry-standard threat intelligence feeds. The external_ids field can be used to facilitate automation and orchestration workflows, where additional information can be shared among incident management systems. - external_references field, on the other hand, is used to provide a more general mechanism for linking entities to external sources of information. The external_references field can include references to blog posts, articles, external documents, threat intelligence reports, and other sources of information that may not have a standardized format or identifier.
kill_chain_phases	KillChainPhase Object List	The list of kill chain phases for which this Tool can be used.
language	ShortStringString	The language field is used to specify the primary language of the affected system or the target of an attack. It can be used to provide additional context and information about the entity. The primary purpose of this field is to help analysts filter and prioritize entities based on their knowledge and expertise of different languages. For example, if an incident involves an attack on a system in a country where a specific language is predominant, the language field can be used to indicate that language, which can help analysts to quickly identify and respond to incidents that may be geographically or culturally relevant. This information can be used to prioritize incidents based on their potential impact. The language field can also be used to help with correlation of incidents across different systems and regions, as well as to help with data analysis and reporting.
revision	Integer	A monotonically increasing revision, incremented each time the object is changed.
source	MedStringString	Represents the source of the intelligence that led to the creation of the entity.
source_uri	String	URI of the source of the intelligence that led to the creation of the entity.
timestamp	Inst (Date)	The time this object was created at, or last modified.
tlp	TLPString	TLP stands for Traffic Light Protocol, which indicates precisely how a resource is intended to be shared, replicated, copied, etc. It is used to indicate the sensitivity of the information contained within the message. This allows recipients to determine the appropriate handling and dissemination of the information based on their clearance level and need-to-know. For example, an entity containing information about a critical vulnerability in a widely-used software might be marked as red, indicating that it should only be shared with a small group of highly trusted individuals who need to know in order to take appropriate action. On the other hand, a message containing more general information about security threats might be marked as amber or green, indicating that it can be shared more broadly within an organization.
tool_version	ShortStringString	The version identifier associated with the Tool.
x_mitre_aliases	ShortStringString List	ATT&CK Software.aliases.

• Reference: Tool

Property description ∷ MarkdownString

A description of object, which may be detailed.

• This entry is required

  • Markdown Markdown string with at most 5000 characters.

Property external_ids ∷ String List

It is used to store a list of external identifiers that can be linked to the incident, providing a reliable and manageable way to correlate and group related events across multiple data sources. It is especially useful in larger organizations that rely on multiple security information and event management (SIEM) systems to detect security incidents. For instance, it can be used to track events across different network sensors, intrusion detection and prevention systems (IDPS), or log management platforms. The field can also be used to facilitate automation and orchestration workflows, where additional information can be shared among incident management systems. It can be used to cross-reference with other external tools such as threat intelligence feeds and vulnerability scanners.

• This entry is optional
• This entry's type is sequential (allows zero or more values)

Property external_references ∷ ExternalReference Object List

Specifies a list of external references which refers to non-CTIM information.

Similar to external_ids field with major differences:

• external_ids field is used to store a list of external identifiers that can be used to link entities across different data sources. These identifiers are typically standardized and well-known, such as CVE IDs, US-CERT advisories, or other industry-standard threat intelligence feeds. The external_ids field can be used to facilitate automation and orchestration workflows, where additional information can be shared among incident management systems.

• external_references field, on the other hand, is used to provide a more general mechanism for linking entities to external sources of information. The external_references field can include references to blog posts, articles, external documents, threat intelligence reports, and other sources of information that may not have a standardized format or identifier.

• This entry is optional
• This entry's type is sequential (allows zero or more values)

• ExternalReference Object Value
  • Details: ExternalReference Object

Property id ∷ String

Globally unique URI identifying this object.

• This entry is required

  • IDs are URIs, for example https://www.domain.com/ctia/judgement/judgement-de305d54-75b4-431b-adb2-eb6b9e546014 for a Judgement. This ID type compares to the STIX id field. The optional STIX idref field is not used.

Property kill_chain_phases ∷ KillChainPhase Object List

The list of kill chain phases for which this Tool can be used.

• This entry is optional
• This entry's type is sequential (allows zero or more values)

• KillChainPhase Object Value
  • Details: KillChainPhase Object

Property labels ∷ ToolLabelString List

The kind(s) of tool(s) being described.

• This entry is required

• This entry's type is sequential (allows zero or more values)

  • ToolLabel Tool labels describe the categories of tools that can be used to perform attacks.
  • Allowed Values:
    • credential-exploitation
    • denial-of-service
    • exploitation
    • information-gathering
    • network-capture
    • remote-access
    • vulnerability-scanning
  • Reference: Tool Label

Property language ∷ ShortStringString

The language field is used to specify the primary language of the affected system or the target of an attack. It can be used to provide additional context and information about the entity. The primary purpose of this field is to help analysts filter and prioritize entities based on their knowledge and expertise of different languages.

For example, if an incident involves an attack on a system in a country where a specific language is predominant, the language field can be used to indicate that language, which can help analysts to quickly identify and respond to incidents that may be geographically or culturally relevant. This information can be used to prioritize incidents based on their potential impact. The language field can also be used to help with correlation of incidents across different systems and regions, as well as to help with data analysis and reporting.

• This entry is optional

  • ShortString String with at most 1024 characters.

Property revision ∷ Integer

A monotonically increasing revision, incremented each time the object is changed.

• This entry is optional

  • Zero, or a positive integer.

Property schema_version ∷ String

CTIM schema version for this entity.

• This entry is required

  • A semantic version matching the CTIM version against which this object should be valid.

Property short_description ∷ MedStringString

A single line, short summary of the object.

• This entry is required

  • MedString String with at most 2048 characters.

Property source ∷ MedStringString

Represents the source of the intelligence that led to the creation of the entity.

• This entry is optional

  • MedString String with at most 2048 characters.

Property source_uri ∷ String

URI of the source of the intelligence that led to the creation of the entity.

• This entry is optional

  • A URI

Property timestamp ∷ Inst (Date)

The time this object was created at, or last modified.

• This entry is optional

  • ISO8601 Timestamp Schema definition for all date or timestamp values. Serialized as a string, the field should follow the rules of the ISO8601 standard.

Property title ∷ ShortStringString

A short title for this object, used as primary display and reference value.

• This entry is required

  • ShortString String with at most 1024 characters.

Property tlp ∷ TLPString

TLP stands for Traffic Light Protocol, which indicates precisely how a resource is intended to be shared, replicated, copied, etc.

It is used to indicate the sensitivity of the information contained within the message. This allows recipients to determine the appropriate handling and dissemination of the information based on their clearance level and need-to-know.

For example, an entity containing information about a critical vulnerability in a widely-used software might be marked as red, indicating that it should only be shared with a small group of highly trusted individuals who need to know in order to take appropriate action. On the other hand, a message containing more general information about security threats might be marked as amber or green, indicating that it can be shared more broadly within an organization.

• This entry is optional

  • Allowed Values:
    • amber
    • green
    • red
    • white

Property tool_version ∷ ShortStringString

The version identifier associated with the Tool.

• This entry is optional

  • ShortString String with at most 1024 characters.

Property type ∷ ToolTypeIdentifierString

• This entry is required

  • Must equal: "tool"

Property x_mitre_aliases ∷ ShortStringString List

ATT&CK Software.aliases.

• This entry is optional

• This entry's type is sequential (allows zero or more values)

  • ShortString String with at most 1024 characters.

ExternalReference Object

ExternalReference External references are used to describe pointers to information represented outside of CTIM. For example, a Malware object could use an external reference to indicate an ID for that malware in an external database or a report could use references to represent source material.

Property	Type	Description	Required?
source_name	MedStringString	The source within which the external-reference is defined (system, registry, organization, etc.)	✓
description	MarkdownString
external_id	String	An identifier for the external reference content.
hashes	String List	Specifies a dictionary of hashes for the contents of the url.
url	String	A URL reference to an external resource.

• Reference: External Reference

Property description ∷ MarkdownString

• This entry is optional

  • Markdown Markdown string with at most 5000 characters.

Property external_id ∷ String

An identifier for the external reference content.

• This entry is optional

Property hashes ∷ String List

Specifies a dictionary of hashes for the contents of the url.

• This entry is optional
• This entry's type is sequential (allows zero or more values)

Property source_name ∷ MedStringString

The source within which the external-reference is defined (system, registry, organization, etc.)

• This entry is required

  • MedString String with at most 2048 characters.

Property url ∷ String

A URL reference to an external resource.

• This entry is optional

  • A URI

KillChainPhase Object

KillChainPhase The kill-chain-phase represents a phase in a kill chain, which describes the various phases an attacker may undertake in order to achieve their objectives.

Property	Type	Description	Required?
kill_chain_name	String	The name of the kill chain.	✓
phase_name	String	The name of the phase in the kill chain.	✓

• Reference: Kill Chain Phase

Property kill_chain_name ∷ String

The name of the kill chain.

• This entry is required

  • SHOULD be all lowercase (where lowercase is defined by the locality conventions) and SHOULD use hyphens instead of spaces or underscores as word separators.
  • Must equal: "lockheed-martin-cyber-kill-chain"
  • Reference: Open Vocabulary

Property phase_name ∷ String

The name of the phase in the kill chain.

• This entry is required

  • SHOULD be all lowercase (where lowercase is defined by the locality conventions) and SHOULD use hyphens instead of spaces or underscores as word separators.
  • Allowed Values:
    • actions-on-objective
    • command-and-control
    • delivery
    • exploitation
    • installation
    • reconnaissance
    • weaponization
  • Reference: Open Vocabulary