Pathlock TDnR - Kerberos Keytab Changes

Status: available
Severity: high
Time window: 1h
Source: github.com/Azure/Azure-Sentinel

Detects changes to Kerberos keytab configuration in SAP, forwarded by Pathlock Threat Detection and Response. Modifications to Kerberos settings may indicate credential theft, SSO bypass attempts, or persistent access mechanisms leveraging Kerberos delegation.

MITRE ATT&CK coverage

Tactic	Techniques
Persistence	`T1098` Account Manipulation
Credential Access	`T1558` Steal or Forge Kerberos Tickets

Rule body

id: 2a3b4c5d-6e7f-4a0b-8c1d-2e3f4a5b6c12
name: Pathlock TDnR - Kerberos Keytab Changes
kind: Scheduled
description: >-
  Detects changes to Kerberos keytab configuration in SAP, forwarded by Pathlock Threat Detection
  and Response. Modifications to Kerberos settings may indicate credential theft, SSO bypass
  attempts, or persistent access mechanisms leveraging Kerberos delegation.
severity: High
status: Available
requiredDataConnectors:
  - connectorId: Pathlock_TDnR
    dataTypes:
      - Pathlock_TDnR_CL
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
  - CredentialAccess
  - Persistence
relevantTechniques:
  - T1558
  - T1098
query: |
  Pathlock_TDnR_CL
  | where DataSource == "CHANGEDOC_KERBEROS"
  | project TimeGenerated, Sysid, DataSource, Eventid, Instance, Hostname, Bname,
            Tcode, Report, Area, Subid, SrcIp, DestIp, AffectedUser, LogLine,
            MsgType, MsgId, MsgNo, MessageV1, MessageV2, MessageV3, MessageV4, CentralTs
entityMappings:
  - entityType: Account
    fieldMappings:
      - identifier: Name
        columnName: Bname
  - entityType: Host
    fieldMappings:
      - identifier: HostName
        columnName: Hostname
  - entityType: IP
    fieldMappings:
      - identifier: Address
        columnName: SrcIp
eventGroupingSettings:
  aggregationKind: SingleAlert
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    enabled: true
    reopenClosedIncident: false
    lookbackDuration: 5h
    matchingMethod: AnyAlert
    groupByEntities: []
    groupByAlertDetails: []
    groupByCustomDetails: []
suppressionDuration: 5h
suppressionEnabled: false
version: 1.0.0

Stages and Predicates

Stage 1: `source`

Pathlock_TDnR_CL

Stage 2: `where`

| where DataSource == "CHANGEDOC_KERBEROS"

Stage 3: `project`

| project TimeGenerated, Sysid, DataSource, Eventid, Instance, Hostname, Bname,
          Tcode, Report, Area, Subid, SrcIp, DestIp, AffectedUser, LogLine,
          MsgType, MsgId, MsgNo, MessageV1, MessageV2, MessageV3, MessageV4, CentralTs

Indicators

These rows show field, operator, and value matches.

Field	Kind	Values	Search
`DataSource`	eq	`CHANGEDOC_KERBEROS`	`field:"DataSource" kind:eq value:"CHANGEDOC_KERBEROS"`

Output fields

These fields are emitted when the rule matches.

Field	Source
`AffectedUser`	`project`
`Area`	`project`
`Bname`	`project`
`CentralTs`	`project`
`DataSource`	`project`
`DestIp`	`project`
`Eventid`	`project`
`Hostname`	`project`
`Instance`	`project`
`LogLine`	`project`
`MessageV1`	`project`
`MessageV2`	`project`
`MessageV3`	`project`
`MessageV4`	`project`
`MsgId`	`project`
`MsgNo`	`project`
`MsgType`	`project`
`Report`	`project`
`SrcIp`	`project`
`Subid`	`project`
`Sysid`	`project`
`Tcode`	`project`
`TimeGenerated`	`project`