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Add GCP SSO persistence rules #954
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dc2fabe
Creating common ancestor commit
02b4ace
Add GCP SSO persistence rules
f1c1fc7
Use deep_get for gcp_inbound_sso_profile_created_or_updated rule
a8cde95
Add Runbook and Reference for each rule
b923716
One more Runbook
8d513b1
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34 changes: 34 additions & 0 deletions
34
rules/gcp_audit_rules/gcp_inbound_sso_profile_created_or_updated.py
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,34 @@ | ||
| METHODS = [ | ||
| "google.admin.AdminService.inboundSsoProfileCreated", | ||
| "google.admin.AdminService.inboundSsoProfileUpdated", | ||
| ] | ||
|
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| def rule(event): | ||
| return event.deep_get("protoPayload", "methodName", default="") in METHODS | ||
|
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|
|
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| def title(event): | ||
| actor = event.deep_get( | ||
| "protoPayload", "authenticationInfo", "principalEmail", default="<ACTOR_NOT_FOUND>" | ||
| ) | ||
| event_name = event.deep_walk( | ||
| "protoPayload", "metadata", "event", "eventName", default="<EVENT_NAME_NOT_FOUND>" | ||
| ) | ||
|
|
||
| resource = organization_id = event.deep_walk( | ||
| "protoPayload", "resourceName", default="<RESOURCE_NOT_FOUND>" | ||
| ).split("/") | ||
|
|
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| organization_id = resource[resource.index("organizations") + 1] | ||
|
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| return f"GCP: [{actor}] performed {event_name} in organization {organization_id}" | ||
|
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|
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| def alert_context(event): | ||
| return { | ||
| "resourceName": event.deep_get( | ||
| "protoPayload", "resourceName", default="<RESOURCE_NOT_FOUND>" | ||
| ), | ||
| "serviceName": event.deep_get("protoPayload", "serviceName", default="<SERVICE_NOT_FOUND>"), | ||
| } |
136 changes: 136 additions & 0 deletions
136
rules/gcp_audit_rules/gcp_inbound_sso_profile_created_or_updated.yml
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,136 @@ | ||
| AnalysisType: rule | ||
| Filename: gcp_inbound_sso_profile_created_or_updated.py | ||
| RuleID: "GCP.Inbound.SSO.Profile.Created" | ||
| DisplayName: "GCP Inbound SSO Profile Created" | ||
| Enabled: true | ||
| LogTypes: | ||
| - GCP.AuditLog | ||
| Tags: | ||
| - Account Manipulation | ||
| - Additional Cloud Roles | ||
| - GCP | ||
| - Privilege Escalation | ||
| Reports: | ||
| MITRE ATT&CK: | ||
| - TA0003:T1136.003 | ||
| - TA0003:T1098.003 | ||
| - TA0004:T1098.003 | ||
| Severity: High | ||
| DedupPeriodMinutes: 60 | ||
| Threshold: 1 | ||
| Tests: | ||
| - Name: InboundSsoProfileDeleted-False | ||
| ExpectedResult: false | ||
| Log: | ||
| insertId: chtsf1e7iek8 | ||
| logName: organizations/325169835352/logs/cloudaudit.googleapis.com%2Factivity | ||
| protoPayload: | ||
| '@type': type.googleapis.com/google.cloud.audit.AuditLog | ||
| authenticationInfo: | ||
| principalEmail: [email protected] | ||
| metadata: | ||
| '@type': type.googleapis.com/ccc_hosted_reporting.ActivityProto | ||
| activityId: | ||
| timeUsec: "1700250882598435" | ||
| uniqQualifier: "6879748717081533837" | ||
| event: | ||
| - eventId: dd0c44e2 | ||
| eventName: INBOUND_SSO_PROFILE_DELETED | ||
| eventType: INBOUND_SSO_SETTINGS | ||
| parameter: | ||
| - label: LABEL_OPTIONAL | ||
| name: INBOUND_SSO_PROFILE_NAME | ||
| type: TYPE_STRING | ||
| value: inboundSamlSsoProfiles/01lmf7wd3jt9atc | ||
| methodName: google.admin.AdminService.inboundSsoProfileDeleted | ||
| requestMetadata: | ||
| destinationAttributes: {} | ||
| requestAttributes: {} | ||
| resourceName: organizations/123456789012/inboundSsoSettings | ||
| serviceName: admin.googleapis.com | ||
| receiveTimestamp: "2023-11-17T19:54:43.367407397Z" | ||
| resource: | ||
| labels: | ||
| method: google.admin.AdminService.inboundSsoProfileDeleted | ||
| service: admin.googleapis.com | ||
| type: audited_resource | ||
| severity: NOTICE | ||
| timestamp: "2023-11-17T19:54:42.598435Z" | ||
| - Name: InboundSsoProfileUpdated-True | ||
| ExpectedResult: true | ||
| Log: | ||
| insertId: crpr6bdcjfg | ||
| logName: organizations/123456789012/logs/cloudaudit.googleapis.com%2Factivity | ||
| protoPayload: | ||
| '@type': type.googleapis.com/google.cloud.audit.AuditLog | ||
| authenticationInfo: | ||
| principalEmail: user@@example.com | ||
| metadata: | ||
| '@type': type.googleapis.com/ccc_hosted_reporting.ActivityProto | ||
| activityId: | ||
| timeUsec: "1700250956956215" | ||
| uniqQualifier: "2009471038637356014" | ||
| event: | ||
| - eventId: bdbc47ad | ||
| eventName: INBOUND_SSO_PROFILE_UPDATED | ||
| eventType: INBOUND_SSO_SETTINGS | ||
| parameter: | ||
| - label: LABEL_OPTIONAL | ||
| name: INBOUND_SSO_PROFILE_CHANGES | ||
| type: TYPE_STRING | ||
| value: 'Display Name : { oldValue: Test Profile, newValue: Test Profile Update}' | ||
| - label: LABEL_OPTIONAL | ||
| name: INBOUND_SSO_PROFILE_NAME | ||
| type: TYPE_STRING | ||
| value: inboundSamlSsoProfiles/03vsz0843d02br4 | ||
| methodName: google.admin.AdminService.inboundSsoProfileUpdated | ||
| requestMetadata: | ||
| destinationAttributes: {} | ||
| requestAttributes: {} | ||
| resourceName: organizations/123456789012/inboundSsoSettings | ||
| serviceName: admin.googleapis.com | ||
| receiveTimestamp: "2023-11-17T19:55:57.417198068Z" | ||
| resource: | ||
| labels: | ||
| method: google.admin.AdminService.inboundSsoProfileUpdated | ||
| service: admin.googleapis.com | ||
| type: audited_resource | ||
| severity: NOTICE | ||
| timestamp: "2023-11-17T19:55:56.956215Z" | ||
| - Name: InboundSsoProfileCreated-True | ||
| ExpectedResult: true | ||
| Log: | ||
| insertId: -rqtp5gefopij | ||
| logName: organizations/123456789012/logs/cloudaudit.googleapis.com%2Factivity | ||
| protoPayload: | ||
| '@type': type.googleapis.com/google.cloud.audit.AuditLog | ||
| authenticationInfo: | ||
| principalEmail: [email protected] | ||
| metadata: | ||
| '@type': type.googleapis.com/ccc_hosted_reporting.ActivityProto | ||
| activityId: | ||
| timeUsec: "1700250924521362" | ||
| uniqQualifier: "6051731645161637785" | ||
| event: | ||
| - eventId: 637d2b33 | ||
| eventName: INBOUND_SSO_PROFILE_CREATED | ||
| eventType: INBOUND_SSO_SETTINGS | ||
| parameter: | ||
| - label: LABEL_OPTIONAL | ||
| name: INBOUND_SSO_PROFILE_NAME | ||
| type: TYPE_STRING | ||
| value: inboundSamlSsoProfiles/03vsz0843d02br4 | ||
| methodName: google.admin.AdminService.inboundSsoProfileCreated | ||
| requestMetadata: | ||
| destinationAttributes: {} | ||
| requestAttributes: {} | ||
| resourceName: organizations/123456789012/inboundSsoSettings | ||
| serviceName: admin.googleapis.com | ||
| receiveTimestamp: "2023-11-17T19:55:25.012649522Z" | ||
| resource: | ||
| labels: | ||
| method: google.admin.AdminService.inboundSsoProfileCreated | ||
| service: admin.googleapis.com | ||
| type: audited_resource | ||
| severity: NOTICE | ||
| timestamp: "2023-11-17T19:55:24.521362Z" |
32 changes: 32 additions & 0 deletions
32
rules/gcp_audit_rules/gcp_workforce_pool_created_or_updated.py
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| METHODS = [ | ||
| "google.iam.admin.v1.WorkforcePools.CreateWorkforcePool", | ||
| "google.iam.admin.v1.WorkforcePools.UpdateWorkforcePool", | ||
| ] | ||
|
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||
|
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| def rule(event): | ||
| return event.deep_get("protoPayload", "methodName", default="") in METHODS | ||
|
|
||
|
|
||
| def title(event): | ||
| actor = event.deep_get( | ||
| "protoPayload", "authenticationInfo", "principalEmail", default="<ACTOR_NOT_FOUND>" | ||
| ) | ||
| workforce_pool = event.deep_get("protoPayload", "request", "workforcePool", "name").split("/")[ | ||
| -1 | ||
| ] | ||
|
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| resource = organization_id = event.deep_get("logName", default="<LOG_NAME_NOT_FOUND>").split( | ||
| "/" | ||
| ) | ||
|
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| organization_id = resource[resource.index("organizations") + 1] | ||
|
|
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| return ( | ||
| f"GCP: [{actor}] created or updated workforce pool " | ||
| f"[{workforce_pool}] in organization [{organization_id}]" | ||
| ) | ||
|
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|
|
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| def alert_context(event): | ||
| return event.deep_get("protoPayload", "request", "workforcePool", default={}) |
154 changes: 154 additions & 0 deletions
154
rules/gcp_audit_rules/gcp_workforce_pool_created_or_updated.yml
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,154 @@ | ||
| AnalysisType: rule | ||
| Filename: gcp_workforce_pool_created_or_updated.py | ||
| RuleID: "GCP.Workforce.Pool.Created.or.Updated" | ||
| DisplayName: "GCP Workforce Pool Created or Updated" | ||
| Enabled: true | ||
| LogTypes: | ||
| - GCP.AuditLog | ||
| Tags: | ||
| - Account Manipulation | ||
| - Additional Cloud Roles | ||
| - GCP | ||
| - Privilege Escalation | ||
| Reports: | ||
| MITRE ATT&CK: | ||
| - TA0003:T1136.003 | ||
| - TA0003:T1098.003 | ||
| - TA0004:T1098.003 | ||
| Severity: High | ||
| DedupPeriodMinutes: 60 | ||
| Threshold: 1 | ||
| Tests: | ||
| - Name: DeleteWorkforcePool-False | ||
| ExpectedResult: false | ||
| Log: | ||
| insertId: 1plwiv7e2lay7 | ||
| logName: organizations/123456789012/logs/cloudaudit.googleapis.com%2Factivity | ||
| operation: | ||
| first: true | ||
| id: locations/global/workforcePools/test-pool/operations/bigar3hp32vamefaukfkaaq000000000 | ||
| producer: iam.googleapis.com | ||
| protoPayload: | ||
| '@type': type.googleapis.com/google.cloud.audit.AuditLog | ||
| authenticationInfo: | ||
| principalEmail: [email protected] | ||
| authorizationInfo: | ||
| - granted: true | ||
| permission: iam.workforcePools.delete | ||
| resource: locations/global/workforcePools/test-pool | ||
| resourceAttributes: {} | ||
| methodName: google.iam.admin.v1.WorkforcePools.DeleteWorkforcePool | ||
| request: | ||
| '@type': type.googleapis.com/google.iam.admin.v1.DeleteWorkforcePoolRequest | ||
| name: locations/global/workforcePools/test-pool | ||
| requestMetadata: | ||
| callerIp: 07da:0994:97fb:8db1:c68f:c109:fcdd:d594 | ||
| callerSuppliedUserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/119.0,gzip(gfe),gzip(gfe) | ||
| destinationAttributes: {} | ||
| requestAttributes: | ||
| auth: {} | ||
| reason: 8uSywAYQGg5Db2xpc2V1bSBGbG93cw | ||
| time: "2023-11-17T18:58:52.165673889Z" | ||
| resourceName: locations/global/workforcePools/test-pool | ||
| serviceName: iam.googleapis.com | ||
| receiveTimestamp: "2023-11-17T18:58:52.901258022Z" | ||
| resource: | ||
| labels: | ||
| method: google.iam.admin.v1.WorkforcePools.DeleteWorkforcePool | ||
| service: iam.googleapis.com | ||
| type: audited_resource | ||
| severity: NOTICE | ||
| timestamp: "2023-11-17T18:58:52.158942930Z" | ||
| - Name: UpdateWorkforcePool-True | ||
| ExpectedResult: true | ||
| Log: | ||
| insertId: 1h09dxwe33hgu | ||
| logName: organizations/123456789012/logs/cloudaudit.googleapis.com%2Factivity | ||
| operation: | ||
| first: true | ||
| id: locations/global/workforcePools/test-pool/operations/bigarg7n32vamefy6ximiaq000000000 | ||
| producer: iam.googleapis.com | ||
| protoPayload: | ||
| '@type': type.googleapis.com/google.cloud.audit.AuditLog | ||
| authenticationInfo: | ||
| principalEmail: [email protected] | ||
| authorizationInfo: | ||
| - granted: true | ||
| permission: iam.workforcePools.update | ||
| resource: locations/global/workforcePools/test-pool | ||
| resourceAttributes: {} | ||
| methodName: google.iam.admin.v1.WorkforcePools.UpdateWorkforcePool | ||
| request: | ||
| '@type': type.googleapis.com/google.iam.admin.v1.UpdateWorkforcePoolRequest | ||
| updateMask: description,sessionDuration,disabled,displayName | ||
| workforcePool: | ||
| description: Test pool to facilitate detection writing | ||
| displayName: Test Pool | ||
| name: locations/global/workforcePools/test-pool | ||
| sessionDuration: 43200s | ||
| requestMetadata: | ||
| callerIp: 07da:0994:97fb:8db1:c68f:c109:fcdd:d594 | ||
| callerSuppliedUserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/119.0,gzip(gfe),gzip(gfe) | ||
| destinationAttributes: {} | ||
| requestAttributes: | ||
| auth: {} | ||
| reason: 8uSywAYQGg5Db2xpc2V1bSBGbG93cw | ||
| time: "2023-11-17T18:53:15.208909504Z" | ||
| resourceName: locations/global/workforcePools/test-pool | ||
| serviceName: iam.googleapis.com | ||
| receiveTimestamp: "2023-11-17T18:53:16.523653141Z" | ||
| resource: | ||
| labels: | ||
| method: google.iam.admin.v1.WorkforcePools.UpdateWorkforcePool | ||
| service: iam.googleapis.com | ||
| type: audited_resource | ||
| severity: NOTICE | ||
| timestamp: "2023-11-17T18:53:15.200613481Z" | ||
| - Name: CreateWorkforcePool-True | ||
| ExpectedResult: true | ||
| Log: | ||
| insertId: 6432zre32u1v | ||
| logName: organizations/123456789012/logs/cloudaudit.googleapis.com%2Factivity | ||
| operation: | ||
| first: true | ||
| id: locations/global/workforcePools/test-pool/operations/bifqrwxk32vamegiyoqaoeab00000000 | ||
| producer: iam.googleapis.com | ||
| protoPayload: | ||
| '@type': type.googleapis.com/google.cloud.audit.AuditLog | ||
| authenticationInfo: | ||
| principalEmail: [email protected] | ||
| authorizationInfo: | ||
| - granted: true | ||
| permission: iam.workforcePools.create | ||
| resource: organizations/123456789012 | ||
| resourceAttributes: {} | ||
| methodName: google.iam.admin.v1.WorkforcePools.CreateWorkforcePool | ||
| request: | ||
| '@type': type.googleapis.com/google.iam.admin.v1.CreateWorkforcePoolRequest | ||
| location: locations/global | ||
| workforcePool: | ||
| description: Test pool | ||
| displayName: Test Pool | ||
| name: locations/global/workforcePools/test-pool | ||
| parent: organizations/325169835352 | ||
| sessionDuration: 3600s | ||
| state: ACTIVE | ||
| workforcePoolId: test-pool | ||
| requestMetadata: | ||
| callerIp: 07da:0994:97fb:8db1:c68f:c109:fcdd:d594 | ||
| callerSuppliedUserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/119.0,gzip(gfe),gzip(gfe) | ||
| destinationAttributes: {} | ||
| requestAttributes: | ||
| auth: {} | ||
| reason: 8uSywAYQGg5Db2xpc2V1bSBGbG93cw | ||
| time: "2023-11-17T18:47:53.284817626Z" | ||
| resourceName: organizations/325169835352 | ||
| serviceName: iam.googleapis.com | ||
| receiveTimestamp: "2023-11-17T18:47:54.138395349Z" | ||
| resource: | ||
| labels: | ||
| method: google.iam.admin.v1.WorkforcePools.CreateWorkforcePool | ||
| service: iam.googleapis.com | ||
| type: audited_resource | ||
| severity: NOTICE | ||
| timestamp: "2023-11-17T18:47:53.276929945Z" |
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The +/- in this file are from me sorting the IDs alphabetically.