SIGNAL - Okta SSO to AWS

Severity: informational
Log types: Okta.SystemLog
Source: github.com/panther-labs/panther-analysis

Rules detecting the same action

Other rules on this platform that filter on the same API call or operation.

First Occurrence of Okta User Session Started via Proxy (Elastic)
Okta AiTM Session Cookie Replay (Elastic)
Okta Multiple Failed Requests To Access Applications (YARA-L)
Okta Multiple Failed Requests to Access Applications (Splunk)
Okta Potentially Stolen Session (Panther)
Potentially Successful Okta MFA Bombing via Push Notifications (Elastic)
Successful Application SSO from Rare Unknown Client Device (Elastic)

Rule body yaml

AnalysisType: rule
Filename: okta_sso_to_aws.py
RuleID: "Okta.SSO.to.AWS"
DisplayName: "SIGNAL - Okta SSO to AWS"
Enabled: true
CreateAlert: false
LogTypes:
    - Okta.SystemLog
Severity: Info
DedupPeriodMinutes: 60
Threshold: 1
Tests:
    - Name: AWS SSO via Okta
      ExpectedResult: true
      Log:
        displayMessage: User single sign on to app
        eventType: user.authentication.sso
        legacyEventType: app.auth.sso
        outcome:
            result: SUCCESS
        securityContext: {}
        severity: INFO
        target:
            - alternateId: AWS Production
              detailEntry:
                signOnModeType: SAML_2_0
              displayName: AWS IAM Identity Center
              id: 0oaua5ldoougycQAO696
              type: AppInstance
            - alternateId: aardvark
              displayName: aardvark
              id: 0ua8aardvarkD697
              type: AppUser
        transaction:
            detail: {}
            id: 1a3852fc0d172ecdad0e2447e47fbc98
            type: WEB
        uuid: 35cae732-21bd-11ef-a011-dd05aa53a11a
        version: "0"
    - Name: AWS SSO via Okta without app name
      ExpectedResult: false
      Log:
        displayMessage: User single sign on to app
        eventType: user.authentication.sso
        legacyEventType: app.auth.sso
        outcome:
            result: SUCCESS
        securityContext: {}
        severity: INFO
        target:
            - alternateId: aardvark
              id: 0ua8aardvarkD697
              type: AppUser
        transaction:
            detail: {}
            id: 1a3852fc0d172ecdad0e2447e47fbc98
            type: WEB
        uuid: 35cae732-21bd-11ef-a011-dd05aa53a11a
        version: "0"

Detection logic

Condition

eventType eq "user.authentication.sso"
outcome.result eq "SUCCESS"
target.displayName contains "AWS IAM Identity Center"

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

Field	Kind	Values
`eventType`	eq	`user.authentication.sso`
`outcome.result`	eq	`SUCCESS`
`target.displayName`	contains	`AWS IAM Identity Center`

`j` / `k`	Scroll down / up
`d` / `u`	Half-page down / up
`gg` / `G`	Top / bottom
`h` / `l`	History back / forward
`f`	Follow link (`Shift` = new tab)
`/`	Focus search
`?`	Toggle this help
`↑` / `↓`	Navigate search results
`Enter`	Open highlighted result
`Esc`	Close results / dialog

`type:`	`events` / `rules` / `providers`
`vendor:`	`sigma` / `elastic` / `splunk` / `kusto` / `chronicle` (vendor name alone also works: `sigma:`, `kql:`, `secops:`…)
`tactic:`	TA-id, slug, or name: `credential_access`, `TA0006`
`technique:`	technique or sub-technique ID: `T1003`, `T1003.001` (alias `tech:`)
`severity:`	`critical` / `high` / `medium` / `low` / `informational` (alias `sev:`)
`risk_score`	Numeric comparison on the Elastic risk score (0 to 100): `risk_score>50`, `risk_score<=20`, `risk_score=99` (alias `risk`; Elastic rules only)
`stages:`	Rules with exactly N pipeline stages
`correlation:`	`single_event` / `sequence` / `alternatives` / `alternatives_cross_log` / `all_required` / `correlated`
`with:`	Co-occurrence event-id; stacks (`with:4624 with:4769`) to require all, while a comma list in one occurrence (`with:4624,4769`) is an either-or group. Implies multi-event
`like:`	Structural neighbors of a rule slug (equivalents + subsumption stricter / broader): `like:comsvcs_lsass_memory_dump-splunk-sysmon`
`groupby:`	Entity-grouping substring match against `group_by_keys`: `groupby:user`, `groupby:host`
`uses:`	Rules whose predicate tree touches the field (any kind, any value): `uses:CommandLine`
`excludes:`	Rules with top-level `not()` clauses on the field (FP whitelists): `excludes:ParentImage`
`field:` / `value:`	Predicate search; narrows rule cards to those with a matching leaf and drives the indicator tier. Unquoted = substring, wildcards allowed (`value:mimikatz`)
`indicator:`	Shorthand for `field:F value:V`: `indicator:Image=*\powershell.exe`
`kind:`	Filter by predicate kind. Narrows rule cards to those carrying a matching predicate leaf (`vendor:elastic kind:cidr_match`) and drives the indicator tier: `contains` / `starts_with` / `ends_with` / `regex` / `cidr` / `eq` / `in` … (operator aliases `op:`/`match:`)
`has:` / `no:`	`sample`, `field`, `notes`, `refs`, `trace`, `thirdparty`, `rule`, `pattern`, `timewindow`, `threshold`, `newterms`, `sigma`/`elastic`/`splunk`/`kusto`/`chronicle`
`-op:val`	Exclude matches; works on most operators but not `type:`/`like:`/`has:`/`no:` (use `no:<flag>` to exclude a rule flag): `tactic:execution -vendor:splunk`. Standalone `-kind:`/`-field:`/`-value:` drop every rule carrying a matching predicate leaf (`type:rules -kind:is_null`)
`field:"…"` / `value:"…"`	Quoted value = anchored exact match (also allows spaces): `value:"net user"`
`a,b`	Comma = OR inside one operator (`vendor:sigma,elastic`, `severity:high,critical`); repeating a facet merges the same way. `field:`/`value:` never split (literal commas)
`vendors:` / `stage:`	Singular and plural spellings fold to the canonical operator and value: `tactics:` = `tactic:`, `type:event` = `type:events`, `correlation:sequences` = `correlation:sequence`, `has:thresholds` = `has:threshold`
`"quoted phrase"`	Exact-match a multi-word phrase (free text)