cti-python-stix2/stix2/v20/observables.py

823 lines
35 KiB
Python

"""STIX 2.0 Cyber Observable Objects.
Embedded observable object types, such as Email MIME Component, which is
embedded in Email Message objects, inherit from ``_STIXBase20`` instead of
_Observable and do not have a ``_type`` attribute.
"""
from collections import OrderedDict
import itertools
from ..custom import _custom_extension_builder, _custom_observable_builder
from ..exceptions import AtLeastOnePropertyError, DependentPropertiesError
from ..properties import (
BinaryProperty, BooleanProperty, DictionaryProperty,
EmbeddedObjectProperty, EnumProperty, ExtensionsProperty, FloatProperty,
HashesProperty, HexProperty, IntegerProperty, ListProperty,
ObjectReferenceProperty, StringProperty, TimestampProperty, TypeProperty,
)
from .base import _Extension, _Observable, _STIXBase20
from .vocab import HASHING_ALGORITHM
class Artifact(_Observable):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716219>`__.
""" # noqa
_type = 'artifact'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('mime_type', StringProperty()),
('payload_bin', BinaryProperty()),
('url', StringProperty()),
('hashes', HashesProperty(HASHING_ALGORITHM, spec_version='2.0')),
('extensions', ExtensionsProperty(spec_version='2.0')),
])
def _check_object_constraints(self):
super(Artifact, self)._check_object_constraints()
self._check_mutually_exclusive_properties(['payload_bin', 'url'])
self._check_properties_dependency(['hashes'], ['url'])
class AutonomousSystem(_Observable):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716221>`__.
""" # noqa
_type = 'autonomous-system'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('number', IntegerProperty(required=True)),
('name', StringProperty()),
('rir', StringProperty()),
('extensions', ExtensionsProperty(spec_version='2.0')),
])
class Directory(_Observable):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716223>`__.
""" # noqa
_type = 'directory'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('path', StringProperty(required=True)),
('path_enc', StringProperty()),
# these are not the created/modified timestamps of the object itself
('created', TimestampProperty()),
('modified', TimestampProperty()),
('accessed', TimestampProperty()),
('contains_refs', ListProperty(ObjectReferenceProperty(valid_types=['file', 'directory']))),
('extensions', ExtensionsProperty(spec_version='2.0')),
])
class DomainName(_Observable):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716225>`__.
""" # noqa
_type = 'domain-name'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('value', StringProperty(required=True)),
('resolves_to_refs', ListProperty(ObjectReferenceProperty(valid_types=['ipv4-addr', 'ipv6-addr', 'domain-name']))),
('extensions', ExtensionsProperty(spec_version='2.0')),
])
class EmailAddress(_Observable):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716227>`__.
""" # noqa
_type = 'email-addr'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('value', StringProperty(required=True)),
('display_name', StringProperty()),
('belongs_to_ref', ObjectReferenceProperty(valid_types='user-account')),
('extensions', ExtensionsProperty(spec_version='2.0')),
])
class EmailMIMEComponent(_STIXBase20):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716231>`__.
""" # noqa
_properties = OrderedDict([
('body', StringProperty()),
('body_raw_ref', ObjectReferenceProperty(valid_types=['artifact', 'file'])),
('content_type', StringProperty()),
('content_disposition', StringProperty()),
])
def _check_object_constraints(self):
super(EmailMIMEComponent, self)._check_object_constraints()
self._check_at_least_one_property(['body', 'body_raw_ref'])
class EmailMessage(_Observable):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716229>`__.
""" # noqa
_type = 'email-message'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('is_multipart', BooleanProperty(required=True)),
('date', TimestampProperty()),
('content_type', StringProperty()),
('from_ref', ObjectReferenceProperty(valid_types='email-addr')),
('sender_ref', ObjectReferenceProperty(valid_types='email-addr')),
('to_refs', ListProperty(ObjectReferenceProperty(valid_types='email-addr'))),
('cc_refs', ListProperty(ObjectReferenceProperty(valid_types='email-addr'))),
('bcc_refs', ListProperty(ObjectReferenceProperty(valid_types='email-addr'))),
('subject', StringProperty()),
('received_lines', ListProperty(StringProperty)),
('additional_header_fields', DictionaryProperty(spec_version='2.0')),
('body', StringProperty()),
('body_multipart', ListProperty(EmbeddedObjectProperty(type=EmailMIMEComponent))),
('raw_email_ref', ObjectReferenceProperty(valid_types='artifact')),
('extensions', ExtensionsProperty(spec_version='2.0')),
])
def _check_object_constraints(self):
super(EmailMessage, self)._check_object_constraints()
self._check_properties_dependency(['is_multipart'], ['body_multipart'])
if self.get('is_multipart') is True and self.get('body'):
# 'body' MAY only be used if is_multipart is false.
raise DependentPropertiesError(self.__class__, [('is_multipart', 'body')])
class ArchiveExt(_Extension):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716235>`__.
""" # noqa
_type = 'archive-ext'
_properties = OrderedDict([
('contains_refs', ListProperty(ObjectReferenceProperty(valid_types='file'), required=True)),
('version', StringProperty()),
('comment', StringProperty()),
])
class AlternateDataStream(_STIXBase20):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716239>`__.
""" # noqa
_properties = OrderedDict([
('name', StringProperty(required=True)),
('hashes', HashesProperty(HASHING_ALGORITHM, spec_version="2.0")),
('size', IntegerProperty()),
])
class NTFSExt(_Extension):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716237>`__.
""" # noqa
_type = 'ntfs-ext'
_properties = OrderedDict([
('sid', StringProperty()),
('alternate_data_streams', ListProperty(EmbeddedObjectProperty(type=AlternateDataStream))),
])
class PDFExt(_Extension):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716241>`__.
""" # noqa
_type = 'pdf-ext'
_properties = OrderedDict([
('version', StringProperty()),
('is_optimized', BooleanProperty()),
('document_info_dict', DictionaryProperty(spec_version='2.0')),
('pdfid0', StringProperty()),
('pdfid1', StringProperty()),
])
class RasterImageExt(_Extension):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716243>`__.
""" # noqa
_type = 'raster-image-ext'
_properties = OrderedDict([
('image_height', IntegerProperty()),
('image_width', IntegerProperty()),
('bits_per_pixel', IntegerProperty()),
('image_compression_algorithm', StringProperty()),
('exif_tags', DictionaryProperty(spec_version='2.0')),
])
class WindowsPEOptionalHeaderType(_STIXBase20):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716248>`__.
""" # noqa
_properties = OrderedDict([
('magic_hex', HexProperty()),
('major_linker_version', IntegerProperty()),
('minor_linker_version', IntegerProperty()),
('size_of_code', IntegerProperty()),
('size_of_initialized_data', IntegerProperty()),
('size_of_uninitialized_data', IntegerProperty()),
('address_of_entry_point', IntegerProperty()),
('base_of_code', IntegerProperty()),
('base_of_data', IntegerProperty()),
('image_base', IntegerProperty()),
('section_alignment', IntegerProperty()),
('file_alignment', IntegerProperty()),
('major_os_version', IntegerProperty()),
('minor_os_version', IntegerProperty()),
('major_image_version', IntegerProperty()),
('minor_image_version', IntegerProperty()),
('major_subsystem_version', IntegerProperty()),
('minor_subsystem_version', IntegerProperty()),
('win32_version_value_hex', HexProperty()),
('size_of_image', IntegerProperty()),
('size_of_headers', IntegerProperty()),
('checksum_hex', HexProperty()),
('subsystem_hex', HexProperty()),
('dll_characteristics_hex', HexProperty()),
('size_of_stack_reserve', IntegerProperty()),
('size_of_stack_commit', IntegerProperty()),
('size_of_heap_reserve', IntegerProperty()),
('size_of_heap_commit', IntegerProperty()),
('loader_flags_hex', HexProperty()),
('number_of_rva_and_sizes', IntegerProperty()),
('hashes', HashesProperty(HASHING_ALGORITHM, spec_version="2.0")),
])
def _check_object_constraints(self):
super(WindowsPEOptionalHeaderType, self)._check_object_constraints()
self._check_at_least_one_property()
class WindowsPESection(_STIXBase20):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716250>`__.
""" # noqa
_properties = OrderedDict([
('name', StringProperty(required=True)),
('size', IntegerProperty()),
('entropy', FloatProperty()),
('hashes', HashesProperty(HASHING_ALGORITHM, spec_version="2.0")),
])
class WindowsPEBinaryExt(_Extension):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716245>`__.
""" # noqa
_type = 'windows-pebinary-ext'
_properties = OrderedDict([
('pe_type', StringProperty(required=True)), # open_vocab
('imphash', StringProperty()),
('machine_hex', HexProperty()),
('number_of_sections', IntegerProperty()),
('time_date_stamp', TimestampProperty(precision='second')),
('pointer_to_symbol_table_hex', HexProperty()),
('number_of_symbols', IntegerProperty()),
('size_of_optional_header', IntegerProperty()),
('characteristics_hex', HexProperty()),
('file_header_hashes', HashesProperty(HASHING_ALGORITHM, spec_version="2.0")),
('optional_header', EmbeddedObjectProperty(type=WindowsPEOptionalHeaderType)),
('sections', ListProperty(EmbeddedObjectProperty(type=WindowsPESection))),
])
class File(_Observable):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716233>`__.
""" # noqa
_type = 'file'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('hashes', HashesProperty(HASHING_ALGORITHM, spec_version="2.0")),
('size', IntegerProperty()),
('name', StringProperty()),
('name_enc', StringProperty()),
('magic_number_hex', HexProperty()),
('mime_type', StringProperty()),
# these are not the created/modified timestamps of the object itself
('created', TimestampProperty()),
('modified', TimestampProperty()),
('accessed', TimestampProperty()),
('parent_directory_ref', ObjectReferenceProperty(valid_types='directory')),
('is_encrypted', BooleanProperty()),
('encryption_algorithm', StringProperty()),
('decryption_key', StringProperty()),
('contains_refs', ListProperty(ObjectReferenceProperty)),
('content_ref', ObjectReferenceProperty(valid_types='artifact')),
('extensions', ExtensionsProperty(spec_version='2.0')),
])
def _check_object_constraints(self):
super(File, self)._check_object_constraints()
self._check_properties_dependency(['is_encrypted'], ['encryption_algorithm', 'decryption_key'])
self._check_at_least_one_property(['hashes', 'name'])
class IPv4Address(_Observable):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716252>`__.
""" # noqa
_type = 'ipv4-addr'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('value', StringProperty(required=True)),
('resolves_to_refs', ListProperty(ObjectReferenceProperty(valid_types='mac-addr'))),
('belongs_to_refs', ListProperty(ObjectReferenceProperty(valid_types='autonomous-system'))),
('extensions', ExtensionsProperty(spec_version='2.0')),
])
class IPv6Address(_Observable):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716254>`__.
""" # noqa
_type = 'ipv6-addr'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('value', StringProperty(required=True)),
('resolves_to_refs', ListProperty(ObjectReferenceProperty(valid_types='mac-addr'))),
('belongs_to_refs', ListProperty(ObjectReferenceProperty(valid_types='autonomous-system'))),
('extensions', ExtensionsProperty(spec_version='2.0')),
])
class MACAddress(_Observable):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716256>`__.
""" # noqa
_type = 'mac-addr'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('value', StringProperty(required=True)),
('extensions', ExtensionsProperty(spec_version='2.0')),
])
class Mutex(_Observable):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716258>`__.
""" # noqa
_type = 'mutex'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('name', StringProperty(required=True)),
('extensions', ExtensionsProperty(spec_version='2.0')),
])
class HTTPRequestExt(_Extension):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716262>`__.
""" # noqa
_type = 'http-request-ext'
_properties = OrderedDict([
('request_method', StringProperty(required=True)),
('request_value', StringProperty(required=True)),
('request_version', StringProperty()),
('request_header', DictionaryProperty(spec_version='2.0')),
('message_body_length', IntegerProperty()),
('message_body_data_ref', ObjectReferenceProperty(valid_types='artifact')),
])
class ICMPExt(_Extension):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716264>`__.
""" # noqa
_type = 'icmp-ext'
_properties = OrderedDict([
('icmp_type_hex', HexProperty(required=True)),
('icmp_code_hex', HexProperty(required=True)),
])
class SocketExt(_Extension):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716266>`__.
""" # noqa
_type = 'socket-ext'
_properties = OrderedDict([
(
'address_family', EnumProperty(
allowed=[
"AF_UNSPEC",
"AF_INET",
"AF_IPX",
"AF_APPLETALK",
"AF_NETBIOS",
"AF_INET6",
"AF_IRDA",
"AF_BTH",
], required=True,
),
),
('is_blocking', BooleanProperty()),
('is_listening', BooleanProperty()),
(
'protocol_family', EnumProperty(
allowed=[
"PF_INET",
"PF_IPX",
"PF_APPLETALK",
"PF_INET6",
"PF_AX25",
"PF_NETROM",
],
),
),
('options', DictionaryProperty(spec_version='2.0')),
(
'socket_type', EnumProperty(
allowed=[
"SOCK_STREAM",
"SOCK_DGRAM",
"SOCK_RAW",
"SOCK_RDM",
"SOCK_SEQPACKET",
],
),
),
('socket_descriptor', IntegerProperty()),
('socket_handle', IntegerProperty()),
])
class TCPExt(_Extension):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716271>`__.
""" # noqa
_type = 'tcp-ext'
_properties = OrderedDict([
('src_flags_hex', HexProperty()),
('dst_flags_hex', HexProperty()),
])
class NetworkTraffic(_Observable):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716260>`__.
""" # noqa
_type = 'network-traffic'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('start', TimestampProperty()),
('end', TimestampProperty()),
('is_active', BooleanProperty()),
('src_ref', ObjectReferenceProperty(valid_types=['ipv4-addr', 'ipv6-addr', 'mac-addr', 'domain-name'])),
('dst_ref', ObjectReferenceProperty(valid_types=['ipv4-addr', 'ipv6-addr', 'mac-addr', 'domain-name'])),
('src_port', IntegerProperty()),
('dst_port', IntegerProperty()),
('protocols', ListProperty(StringProperty, required=True)),
('src_byte_count', IntegerProperty()),
('dst_byte_count', IntegerProperty()),
('src_packets', IntegerProperty()),
('dst_packets', IntegerProperty()),
('ipfix', DictionaryProperty(spec_version='2.0')),
('src_payload_ref', ObjectReferenceProperty(valid_types='artifact')),
('dst_payload_ref', ObjectReferenceProperty(valid_types='artifact')),
('encapsulates_refs', ListProperty(ObjectReferenceProperty(valid_types='network-traffic'))),
('encapsulates_by_ref', ObjectReferenceProperty(valid_types='network-traffic')),
('extensions', ExtensionsProperty(spec_version='2.0')),
])
def _check_object_constraints(self):
super(NetworkTraffic, self)._check_object_constraints()
self._check_at_least_one_property(['src_ref', 'dst_ref'])
class WindowsProcessExt(_Extension):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716275>`__.
""" # noqa
_type = 'windows-process-ext'
_properties = OrderedDict([
('aslr_enabled', BooleanProperty()),
('dep_enabled', BooleanProperty()),
('priority', StringProperty()),
('owner_sid', StringProperty()),
('window_title', StringProperty()),
('startup_info', DictionaryProperty(spec_version='2.0')),
])
class WindowsServiceExt(_Extension):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716277>`__.
""" # noqa
_type = 'windows-service-ext'
_properties = OrderedDict([
('service_name', StringProperty(required=True)),
('descriptions', ListProperty(StringProperty)),
('display_name', StringProperty()),
('group_name', StringProperty()),
(
'start_type', EnumProperty(
allowed=[
"SERVICE_AUTO_START",
"SERVICE_BOOT_START",
"SERVICE_DEMAND_START",
"SERVICE_DISABLED",
"SERVICE_SYSTEM_ALERT",
],
),
),
('service_dll_refs', ListProperty(ObjectReferenceProperty(valid_types='file'))),
(
'service_type', EnumProperty(
allowed=[
"SERVICE_KERNEL_DRIVER",
"SERVICE_FILE_SYSTEM_DRIVER",
"SERVICE_WIN32_OWN_PROCESS",
"SERVICE_WIN32_SHARE_PROCESS",
],
),
),
(
'service_status', EnumProperty(
allowed=[
"SERVICE_CONTINUE_PENDING",
"SERVICE_PAUSE_PENDING",
"SERVICE_PAUSED",
"SERVICE_RUNNING",
"SERVICE_START_PENDING",
"SERVICE_STOP_PENDING",
"SERVICE_STOPPED",
],
),
),
])
class Process(_Observable):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716273>`__.
""" # noqa
_type = 'process'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('is_hidden', BooleanProperty()),
('pid', IntegerProperty()),
('name', StringProperty()),
# this is not the created timestamps of the object itself
('created', TimestampProperty()),
('cwd', StringProperty()),
('arguments', ListProperty(StringProperty)),
('command_line', StringProperty()),
('environment_variables', DictionaryProperty(spec_version='2.0')),
('opened_connection_refs', ListProperty(ObjectReferenceProperty(valid_types='network-traffic'))),
('creator_user_ref', ObjectReferenceProperty(valid_types='user-account')),
('binary_ref', ObjectReferenceProperty(valid_types='file')),
('parent_ref', ObjectReferenceProperty(valid_types='process')),
('child_refs', ListProperty(ObjectReferenceProperty('process'))),
('extensions', ExtensionsProperty(spec_version='2.0')),
])
def _check_object_constraints(self):
# no need to check windows-service-ext, since it has a required property
super(Process, self)._check_object_constraints()
try:
self._check_at_least_one_property()
if 'windows-process-ext' in self.get('extensions', {}):
self.extensions['windows-process-ext']._check_at_least_one_property()
except AtLeastOnePropertyError as enclosing_exc:
if 'extensions' not in self:
raise enclosing_exc
else:
if 'windows-process-ext' in self.get('extensions', {}):
self.extensions['windows-process-ext']._check_at_least_one_property()
class Software(_Observable):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716282>`__.
""" # noqa
_type = 'software'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('name', StringProperty(required=True)),
('cpe', StringProperty()),
('languages', ListProperty(StringProperty)),
('vendor', StringProperty()),
('version', StringProperty()),
('extensions', ExtensionsProperty(spec_version='2.0')),
])
class URL(_Observable):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716284>`__.
""" # noqa
_type = 'url'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('value', StringProperty(required=True)),
('extensions', ExtensionsProperty(spec_version='2.0')),
])
class UNIXAccountExt(_Extension):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716289>`__.
""" # noqa
_type = 'unix-account-ext'
_properties = OrderedDict([
('gid', IntegerProperty()),
('groups', ListProperty(StringProperty)),
('home_dir', StringProperty()),
('shell', StringProperty()),
])
class UserAccount(_Observable):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716286>`__.
""" # noqa
_type = 'user-account'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('user_id', StringProperty(required=True)),
('account_login', StringProperty()),
('account_type', StringProperty()), # open vocab
('display_name', StringProperty()),
('is_service_account', BooleanProperty()),
('is_privileged', BooleanProperty()),
('can_escalate_privs', BooleanProperty()),
('is_disabled', BooleanProperty()),
('account_created', TimestampProperty()),
('account_expires', TimestampProperty()),
('password_last_changed', TimestampProperty()),
('account_first_login', TimestampProperty()),
('account_last_login', TimestampProperty()),
('extensions', ExtensionsProperty(spec_version='2.0')),
])
class WindowsRegistryValueType(_STIXBase20):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716293>`__.
""" # noqa
_type = 'windows-registry-value-type'
_properties = OrderedDict([
('name', StringProperty(required=True)),
('data', StringProperty()),
(
'data_type', EnumProperty(
allowed=[
"REG_NONE",
"REG_SZ",
"REG_EXPAND_SZ",
"REG_BINARY",
"REG_DWORD",
"REG_DWORD_BIG_ENDIAN",
"REG_LINK",
"REG_MULTI_SZ",
"REG_RESOURCE_LIST",
"REG_FULL_RESOURCE_DESCRIPTION",
"REG_RESOURCE_REQUIREMENTS_LIST",
"REG_QWORD",
"REG_INVALID_TYPE",
],
),
),
])
class WindowsRegistryKey(_Observable):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716291>`__.
""" # noqa
_type = 'windows-registry-key'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('key', StringProperty(required=True)),
('values', ListProperty(EmbeddedObjectProperty(type=WindowsRegistryValueType))),
# this is not the modified timestamps of the object itself
('modified', TimestampProperty()),
('creator_user_ref', ObjectReferenceProperty(valid_types='user-account')),
('number_of_subkeys', IntegerProperty()),
('extensions', ExtensionsProperty(spec_version='2.0')),
])
class X509V3ExtensionsType(_STIXBase20):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716298>`__.
""" # noqa
_type = 'x509-v3-extensions-type'
_properties = OrderedDict([
('basic_constraints', StringProperty()),
('name_constraints', StringProperty()),
('policy_constraints', StringProperty()),
('key_usage', StringProperty()),
('extended_key_usage', StringProperty()),
('subject_key_identifier', StringProperty()),
('authority_key_identifier', StringProperty()),
('subject_alternative_name', StringProperty()),
('issuer_alternative_name', StringProperty()),
('subject_directory_attributes', StringProperty()),
('crl_distribution_points', StringProperty()),
('inhibit_any_policy', StringProperty()),
('private_key_usage_period_not_before', TimestampProperty()),
('private_key_usage_period_not_after', TimestampProperty()),
('certificate_policies', StringProperty()),
('policy_mappings', StringProperty()),
])
class X509Certificate(_Observable):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part4-cyber-observable-objects/stix-v2.0-cs01-part4-cyber-observable-objects.html#_Toc496716296>`__.
""" # noqa
_type = 'x509-certificate'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('is_self_signed', BooleanProperty()),
('hashes', HashesProperty(HASHING_ALGORITHM, spec_version="2.0")),
('version', StringProperty()),
('serial_number', StringProperty()),
('signature_algorithm', StringProperty()),
('issuer', StringProperty()),
('validity_not_before', TimestampProperty()),
('validity_not_after', TimestampProperty()),
('subject', StringProperty()),
('subject_public_key_algorithm', StringProperty()),
('subject_public_key_modulus', StringProperty()),
('subject_public_key_exponent', IntegerProperty()),
('x509_v3_extensions', EmbeddedObjectProperty(type=X509V3ExtensionsType)),
('extensions', ExtensionsProperty(spec_version='2.0')),
])
def CustomObservable(type='x-custom-observable', properties=None):
"""Custom STIX Cyber Observable Object type decorator.
Example:
>>> from stix2.v20 import CustomObservable
>>> from stix2.properties import IntegerProperty, StringProperty
>>> @CustomObservable('x-custom-observable', [
... ('property1', StringProperty(required=True)),
... ('property2', IntegerProperty()),
... ])
... class MyNewObservableType():
... pass
"""
def wrapper(cls):
_properties = list(
itertools.chain.from_iterable([
[('type', TypeProperty(type, spec_version='2.0'))],
properties,
[('extensions', ExtensionsProperty(spec_version='2.0'))],
]),
)
return _custom_observable_builder(cls, type, _properties, '2.0', _Observable)
return wrapper
def CustomExtension(type='x-custom-observable-ext', properties=None):
"""Decorator for custom extensions to STIX Cyber Observables.
"""
def wrapper(cls):
return _custom_extension_builder(cls, type, properties, '2.0', _Extension)
return wrapper