1Password-GroupMembership

Event	Title	Channel	Sample	Rule
any	Group membership (catch-all)	_catch_all	N	Y
gm-join	Join Group	gm-join	Y	Y
gm-leave	Leave Group	gm-leave	Y	N
gm-role	Change Group Membership Role	gm-role	N	N

any: Group membership (catch-all)

Description

Catch-all entry for 1Password rules that match group membership events without naming a specific action.

Fields #

Name	Description	Rules
`uuid`	The unique identifier for the event.
`timestamp`	When the action was performed.
`actor_uuid`	The unique identifier for the team member who performed the action.
`actor_details.uuid`	The details of the team member who performed the action (including their UUID, name, and email address).
`actor_details.name`	Full name
`actor_details.email`	The details of the team member who performed the action (including their UUID, name, and email address).
`actor_type`
`actor_account_uuid`
`account_uuid`
`action`	The type of action that was performed.
`object_type`	The type of object that the action was performed on.	1 detection rule
`object_uuid`	The unique identifier for the object the action was performed on.
`object_details.uuid`	The details of the team member who is the object of the action (including their UUID, name, and email address). This property is only returned for events where the object of the action is a team member.
`object_details.name`	Full name
`object_details.email`	The details of the team member who is the object of the action (including their UUID, name, and email address). This property is only returned for events where the object of the action is a team member.
`aux_id`	The identifier that relates to additional information about the activity.
`aux_uuid`	The unique identifier that relates to additional information about the activity.
`aux_details.uuid`	The details of the team member who relates to the additional information about the activity (including their UUID, name, and email address). This property is only returned for events where the additional information about an activity relates to a team member.
`aux_details.name`	Full name
`aux_details.email`	The details of the team member who relates to the additional information about the activity (including their UUID, name, and email address). This property is only returned for events where the additional information about an activity relates to a team member.
`aux_info`	Additional information about the activity.	2 detection rules
`session.uuid`	The information about the session, including the date and time the client signed in and started the session, the unique identifier of the device that signed into the session, and the IP address used.
`session.login_time`	The information about the session, including the date and time the client signed in and started the session, the unique identifier of the device that signed into the session, and the IP address used.
`session.device_uuid`	The information about the session, including the date and time the client signed in and started the session, the unique identifier of the device that signed into the session, and the IP address used.
`session.ip`	The information about the session, including the date and time the client signed in and started the session, the unique identifier of the device that signed into the session, and the IP address used.
`location.country`	The geolocation information of the client based on their IP address at the time the event was performed.
`location.region`	The geolocation information of the client based on their IP address at the time the event was performed.
`location.city`	The geolocation information of the client based on their IP address at the time the event was performed.
`location.longitude`	The geolocation information of the client based on their IP address at the time the event was performed.
`location.latitude`	The geolocation information of the client based on their IP address at the time the event was performed.

Common Indicators #

Field/value combinations most frequently checked by detection rules targeting this event, derived from cross-vendor predicate analysis.

Field	Kind	Value	Rules	Vendors
`log_source` (kusto rule field)	eq	`auditevents`	1 rule	kusto
`object_type` (kusto rule field)	eq	`gm`	1 rule	kusto

Detection Rules #

Full rule details for this event, including ATT&CK technique mappings and native queries →

Kusto #

1Password - Potential insider privilege escalation via group source medium: This will alert when an actor grants, or updates their own permissions via a group. Once this analytics rule is triggered it will group all related future alerts for upto an hour when all related entities are the same. Ref: https://1password.com/ Ref: https://github.com/securehats/T1078

gm-join: Join Group

Description

A user joined a group.

Fields #

Name	Description	Rules
`uuid`	The unique identifier for the event.
`timestamp`	When the action was performed.
`actor_uuid`	The unique identifier for the team member who performed the action.
`actor_details.uuid`	The details of the team member who performed the action (including their UUID, name, and email address).
`actor_details.name`	Full name
`actor_details.email`	The details of the team member who performed the action (including their UUID, name, and email address).
`actor_type`
`actor_account_uuid`
`account_uuid`
`action`	The type of action that was performed.	1 detection rule
`object_type`	The type of object that the action was performed on.	1 detection rule
`object_uuid`	The unique identifier for the object the action was performed on.
`object_details.uuid`	The details of the team member who is the object of the action (including their UUID, name, and email address). This property is only returned for events where the object of the action is a team member.
`object_details.name`	Full name
`object_details.email`	The details of the team member who is the object of the action (including their UUID, name, and email address). This property is only returned for events where the object of the action is a team member.
`aux_id`	The identifier that relates to additional information about the activity.
`aux_uuid`	The unique identifier that relates to additional information about the activity.
`aux_details.uuid`	The details of the team member who relates to the additional information about the activity (including their UUID, name, and email address). This property is only returned for events where the additional information about an activity relates to a team member.
`aux_details.name`	Full name
`aux_details.email`	The details of the team member who relates to the additional information about the activity (including their UUID, name, and email address). This property is only returned for events where the additional information about an activity relates to a team member.
`aux_info`	Additional information about the activity.	2 detection rules
`session.uuid`	The information about the session, including the date and time the client signed in and started the session, the unique identifier of the device that signed into the session, and the IP address used.
`session.login_time`	The information about the session, including the date and time the client signed in and started the session, the unique identifier of the device that signed into the session, and the IP address used.
`session.device_uuid`	The information about the session, including the date and time the client signed in and started the session, the unique identifier of the device that signed into the session, and the IP address used.
`session.ip`	The information about the session, including the date and time the client signed in and started the session, the unique identifier of the device that signed into the session, and the IP address used.
`location.country`	The geolocation information of the client based on their IP address at the time the event was performed.
`location.region`	The geolocation information of the client based on their IP address at the time the event was performed.
`location.city`	The geolocation information of the client based on their IP address at the time the event was performed.
`location.longitude`	The geolocation information of the client based on their IP address at the time the event was performed.
`location.latitude`	The geolocation information of the client based on their IP address at the time the event was performed.

Example Event #

{
  "uuid": "7IEPLBPSJX3N473UMJVQGS2UGW",
  "timestamp": "12/15/2023, 10:54:41.356 AM",
  "location": {
    "country": "The Netherlands",
    "region": "North Holland",
    "city": "Amsterdam",
    "latitude": 52.3759,
    "longitude": 4.8975
  },
  "actor_uuid": "AVHAFAP4PRDF5K3724I67N3CEU",
  "actor_details": {
    "uuid": "AVHAFAP4PRDF5K3724I67N3CEU",
    "name": "Automated User Provisioning",
    "email": "zkv4c3mauxjbw@1passwordserviceaccounts.com"
  },
  "action": "join",
  "object_type": "gm",
  "object_uuid": "l4oh2ghravchmzkuactjffwieu",
  "aux_id": "11848060",
  "aux_uuid": "AVHAFAP4PRDF5K3724I67N3CEU",
  "aux_details": {
    "uuid": "AVHAFAP4PRDF5K3724I67N3CEU",
    "name": "Automated User Provisioning",
    "email": "zkv4c3mauxjbw@1passwordserviceaccounts.com"
  },
  "aux_info": "A",
  "session": {
    "uuid": "TPEFXHZ62ZGTHCHMSNEMLLDPMA",
    "login_time": "2023-12-14T11:39:44.9931456Z",
    "device_uuid": "pjleru42mvdhql4nl7mab6ympm",
    "ip": "4.175.88.205"
  }
}

Common Indicators #

Field/value combinations most frequently checked by detection rules targeting this event, derived from cross-vendor predicate analysis.

Field	Kind	Value	Rules	Vendors
`object_type` (kusto rule field)	eq	`gm`	1 rule	kusto
`object_uuid` (kusto rule field)	eq	`watchlist`	1 rule	kusto

Detection Rules #

Full rule details for this event, including ATT&CK technique mappings and native queries →

Kusto #

1Password - User added to privileged group source medium: This will alert when a user is added to a privileged group which has been implemented by an actor that was not the target user account. Once the analytics rule is triggered it will group all related future alerts for upto 30 minutes when all related entities are the same. Ref: https://1password.com/ Ref: https://github.com/securehats/T1098

gm-leave: Leave Group

Description

A user left a group.

Fields #

Name	Description
`uuid`	The unique identifier for the event.
`timestamp`	When the action was performed.
`actor_uuid`	The unique identifier for the team member who performed the action.
`actor_details.uuid`	The details of the team member who performed the action (including their UUID, name, and email address).
`actor_details.name`	Full name
`actor_details.email`	The details of the team member who performed the action (including their UUID, name, and email address).
`actor_type`
`actor_account_uuid`
`account_uuid`
`action`	The type of action that was performed.
`object_type`	The type of object that the action was performed on.
`object_uuid`	The unique identifier for the object the action was performed on.
`object_details.uuid`	The details of the team member who is the object of the action (including their UUID, name, and email address). This property is only returned for events where the object of the action is a team member.
`object_details.name`	Full name
`object_details.email`	The details of the team member who is the object of the action (including their UUID, name, and email address). This property is only returned for events where the object of the action is a team member.
`aux_id`	The identifier that relates to additional information about the activity.
`aux_uuid`	The unique identifier that relates to additional information about the activity.
`aux_details.uuid`	The details of the team member who relates to the additional information about the activity (including their UUID, name, and email address). This property is only returned for events where the additional information about an activity relates to a team member.
`aux_details.name`	Full name
`aux_details.email`	The details of the team member who relates to the additional information about the activity (including their UUID, name, and email address). This property is only returned for events where the additional information about an activity relates to a team member.
`aux_info`	Additional information about the activity.
`session.uuid`	The information about the session, including the date and time the client signed in and started the session, the unique identifier of the device that signed into the session, and the IP address used.
`session.login_time`	The information about the session, including the date and time the client signed in and started the session, the unique identifier of the device that signed into the session, and the IP address used.
`session.device_uuid`	The information about the session, including the date and time the client signed in and started the session, the unique identifier of the device that signed into the session, and the IP address used.
`session.ip`	The information about the session, including the date and time the client signed in and started the session, the unique identifier of the device that signed into the session, and the IP address used.
`location.country`	The geolocation information of the client based on their IP address at the time the event was performed.
`location.region`	The geolocation information of the client based on their IP address at the time the event was performed.
`location.city`	The geolocation information of the client based on their IP address at the time the event was performed.
`location.longitude`	The geolocation information of the client based on their IP address at the time the event was performed.
`location.latitude`	The geolocation information of the client based on their IP address at the time the event was performed.

Example Event #

{
  "uuid": "CFHE6GAZKDOAEBV7JGVF7EJBFG",
  "timestamp": "1/3/2024, 1:16:09.412 PM",
  "location": {
    "country": "The Netherlands",
    "region": "North Brabant",
    "city": "Rijen",
    "latitude": 51.5923,
    "longitude": 4.9218
  },
  "actor_uuid": "QD3Q2WVSVZFHZMC3O6HY3VSC6Y",
  "actor_details": {
    "uuid": "QD3Q2WVSVZFHZMC3O6HY3VSC6Y",
    "name": "Walter White",
    "email": "walter.white@securehats.nl"
  },
  "action": "leave",
  "object_type": "gm",
  "object_uuid": "mewjxg24s7mdhmel2akm73bway",
  "aux_id": "11935842",
  "aux_uuid": "Q3IELCBNUFAYXAECYF6FHCLXXQ",
  "aux_details": {
    "uuid": "Q3IELCBNUFAYXAECYF6FHCLXXQ",
    "name": "Nigel Powers",
    "email": "nigel.powers@securehats.nl"
  },
  "session": {
    "uuid": "2JERYZS455CLZJFLYPUPLCAWYE",
    "login_time": "2024-01-03T13:14:12.2688730Z",
    "device_uuid": "uh7t35mrsnycrf4vz6wbdhs4y4",
    "ip": "76.75.244.76"
  }
}

gm-role: Change Group Membership Role

Description

A user's group membership role was changed.

Fields #

Name	Description
`uuid`	The unique identifier for the event.
`timestamp`	When the action was performed.
`actor_uuid`	The unique identifier for the team member who performed the action.
`actor_details.uuid`	The details of the team member who performed the action (including their UUID, name, and email address).
`actor_details.name`	Full name
`actor_details.email`	The details of the team member who performed the action (including their UUID, name, and email address).
`actor_type`
`actor_account_uuid`
`account_uuid`
`action`	The type of action that was performed.
`object_type`	The type of object that the action was performed on.
`object_uuid`	The unique identifier for the object the action was performed on.
`object_details.uuid`	The details of the team member who is the object of the action (including their UUID, name, and email address). This property is only returned for events where the object of the action is a team member.
`object_details.name`	Full name
`object_details.email`	The details of the team member who is the object of the action (including their UUID, name, and email address). This property is only returned for events where the object of the action is a team member.
`aux_id`	The identifier that relates to additional information about the activity.
`aux_uuid`	The unique identifier that relates to additional information about the activity.
`aux_details.uuid`	The details of the team member who relates to the additional information about the activity (including their UUID, name, and email address). This property is only returned for events where the additional information about an activity relates to a team member.
`aux_details.name`	Full name
`aux_details.email`	The details of the team member who relates to the additional information about the activity (including their UUID, name, and email address). This property is only returned for events where the additional information about an activity relates to a team member.
`aux_info`	Additional information about the activity.
`session.uuid`	The information about the session, including the date and time the client signed in and started the session, the unique identifier of the device that signed into the session, and the IP address used.
`session.login_time`	The information about the session, including the date and time the client signed in and started the session, the unique identifier of the device that signed into the session, and the IP address used.
`session.device_uuid`	The information about the session, including the date and time the client signed in and started the session, the unique identifier of the device that signed into the session, and the IP address used.
`session.ip`	The information about the session, including the date and time the client signed in and started the session, the unique identifier of the device that signed into the session, and the IP address used.
`location.country`	The geolocation information of the client based on their IP address at the time the event was performed.
`location.region`	The geolocation information of the client based on their IP address at the time the event was performed.
`location.city`	The geolocation information of the client based on their IP address at the time the event was performed.
`location.longitude`	The geolocation information of the client based on their IP address at the time the event was performed.
`location.latitude`	The geolocation information of the client based on their IP address at the time the event was performed.

1Password-GroupMembership

any: Group membership (catch-all)

Description

Fields #

Common Indicators #

Detection Rules #

Kusto #

gm-join: Join Group

Description

Fields #

Example Event #

Common Indicators #

Detection Rules #

Kusto #

gm-leave: Leave Group

Description

Fields #

Example Event #

gm-role: Change Group Membership Role

Description

Fields #

References #