Detection rules › Kusto
Highly Sensitive Password Accessed
'This rule will monitor access to highly sensitive passwords. Within the Watchlist called 'LastPass' define passwords which are deemed highly sensitive (such as password to a high privileged application). When an activity is observed against such password, an incident is created.'
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Credential Access | T1555 Credentials from Password Stores |
| Discovery | T1087 Account Discovery |
Rule body kusto
id: b39e6482-ab7e-4817-813d-ec910b64b26e
name: Highly Sensitive Password Accessed
description: |
'This rule will monitor access to highly sensitive passwords.
Within the Watchlist called 'LastPass' define passwords which are deemed highly sensitive (such as password to a high privileged application).
When an activity is observed against such password, an incident is created.'
severity: Medium
status: Available
requiredDataConnectors:
- connectorId: LastPass
dataTypes:
- LastPassNativePoller_CL
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
eventGroupingSettings:
aggregationKind: AlertPerResult
tactics:
- CredentialAccess
- Discovery
relevantTechniques:
- T1555
- T1087
query: |
let watchlist = (_GetWatchlist("LastPass") | project name);
LastPassNativePoller_CL
| where Data_s in (watchlist)
| extend AccountCustomEntity = Username_s, IPCustomEntity = IP_Address_s, URLCustomEntity = Data_s
entityMappings:
- entityType: Account
fieldMappings:
- identifier: Name
columnName: AccountCustomEntity
- entityType: IP
fieldMappings:
- identifier: Address
columnName: IPCustomEntity
- entityType: URL
fieldMappings:
- identifier: Url
columnName: URLCustomEntity
version: 1.0.0
kind: Scheduled
Stages and Predicates
Let binding: watchlist
let watchlist = (_GetWatchlist("LastPass") | project name);
Stage 1: source
LastPassNativePoller_CL
Stage 2: where
| where Data_s in (watchlist)
References watchlist (defined above).
Stage 3: extend
| extend AccountCustomEntity = Username_s, IPCustomEntity = IP_Address_s, URLCustomEntity = Data_s
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 |
|---|---|---|
Data_s | in |
|
Output fields
Fields the rule emits when it matches. Chronicle authors list these in the outcome block; they appear on the detection and $risk_score drives alerting. Sentinel / Defender XDR rules build them up through project / summarize / extend stages. Sentinel maps these into alert fields via entityMappings and customDetails; Defender XDR custom detections surface them as alert fields directly.
| Field | Source |
|---|---|
AccountCustomEntity | extend |
IPCustomEntity | extend |
URLCustomEntity | extend |