Data Types

CaptionNameDescription
Booleanboolean_t

Boolean value. One of true or false.

Byte Stringbytestring_t

(Base: string_t)

Base64 encoded immutable byte sequence.

Datetimedatetime_t

(Base: string_t)

The Internet Date/Time format as defined in RFC-3339.
For example:
2024-09-10T23:20:50.520Z,
2024-09-10 23:20:50.520789Z

Constraints

    • Regex: ^\d{4}-\d{2}-\d{2}[Tt]\d{2}:\d{2}:\d{2}(?:\.\d+)?([Zz]|[\+-]\d{2}:\d{2})?$
Email Addressemail_t

(Base: string_t)

Email address. For example:
[email protected]

Constraints

    • Regex: ^[a-zA-Z0-9!#$%&'*+\-/=?^_\`{|}~.]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$
Hashfile_hash_t

(Base: string_t)

Hash. A unique value that corresponds to the content of the file, image, ja3_hash, or hassh found in the schema.
For example:
MD5: 3172ac7e2b55cbb81f04a6e65855a628

Constraints

  • Regex: ^[a-fA-F0-9]+$
File Namefile_name_t

(Base: string_t)

File name. For example:
text-file.txt.

Floatfloat_t

Real floating-point value. For example:
3.14.

Hostnamehostname_t

(Base: string_t)

Unique name assigned to a device connected to a computer network. It may be a fully qualified domain name (FQDN). For example:
r2-d2.example.com.,
mx.example.com

Integerinteger_t

Signed integer value.

IP Addressip_t

(Base: string_t)

Internet Protocol address (IP address), in either IPv4 or IPv6 format. For example:
192.168.200.24,
2001:0db8:85a3:0000:0000:8a2e:0370:7334.

Constraints

  • Max Length: 40

  • Regex: ((^\s*((([0-9]|[1-9][0-9]|1[0-9]2|2[0-4][0-9]|25[0-5]).)3([0-9]|[1-9][0-9]|1[0-9]2|2[0-4][0-9]|25[0-5]))\s*$)|(^\s*((([0-9A-Fa-f]4:)7([0-9A-Fa-f]4|:))|(([0-9A-Fa-f]4:)6(:[0-9A-Fa-f]4|((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d))3)|:))|(([0-9A-Fa-f]4:)5(((:[0-9A-Fa-f]4)2)|:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d))3)|:))|(([0-9A-Fa-f]4:)4(((:[0-9A-Fa-f]4)3)|((:[0-9A-Fa-f]4)?:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d))3))|:))|(([0-9A-Fa-f]4:)3(((:[0-9A-Fa-f]4)4)|((:[0-9A-Fa-f]4)2:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d))3))|:))|(([0-9A-Fa-f]4:)2(((:[0-9A-Fa-f]4)5)|((:[0-9A-Fa-f]4)3:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d))3))|:))|(([0-9A-Fa-f]4:)1(((:[0-9A-Fa-f]4)6)|((:[0-9A-Fa-f]4)4:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d))3))|:))|(:(((:[0-9A-Fa-f]4)7)|((:[0-9A-Fa-f]4)5:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d))3))|:)))(%.+)?\s*$))
JSONjson_t

Embedded JSON value. A value can be a string, or a number, or true or false or null, or an object or an array. These structures can be nested. See www.json.org.

Longlong_t

8-byte long, signed integer value.

MAC Addressmac_t

(Base: string_t)

Media Access Control (MAC) address. For example:
18:36:F3:98:4F:9A.

Constraints

  • Max Length: 32

  • Regex: ^([0-9A-Fa-f]2[:-])5([0-9A-Fa-f]2)$
Portport_t

(Base: integer_t)

The TCP/UDP port number. For example:
80,
22.

Constraints

  • Between 0 and 65535

Process Nameprocess_name_t

(Base: string_t)

Process name. For example:
Notepad.

Resource UIDresource_uid_t

(Base: string_t)

Resource unique identifier. For example, S3 Bucket name or EC2 Instance ID.

Stringstring_t

UTF-8 encoded byte sequence.

Subnetsubnet_t

(Base: string_t)

The subnet represented in a CIDR notation, using the format network_address/prefix_length. The network_address can be in either IPv4 or IPv6 format. The prefix length indicates the number of bits used for the network portion, and the remaining bits are available for host addresses within that subnet. For example:
192.168.1.0/24,
2001:0db8:85a3:0000::/64

Constraints

  • Max Length: 42

Timestamptimestamp_t

(Base: long_t)

The timestamp format is the number of milliseconds since the Epoch 01/01/1970 00:00:00 UTC. For example:
1618524549901.

URL Stringurl_t

(Base: string_t)

Uniform Resource Locator (URL) string. For example:
http://www.example.com/download/trouble.exe.

User Nameusername_t

(Base: string_t)

User name. For example:
john_doe.

UUIDuuid_t

(Base: string_t)

128-bit universal unique identifier. For example:
123e4567-e89b-12d3-a456-42661417400.

Constraints

  • Regex: [0-9a-fA-F]8-[0-9a-fA-F]4-[0-9a-fA-F]4-[0-9a-fA-F]4-[0-9a-fA-F]12

This page describes ocsf-1.4.0