SAP LogServ - HANA DB - Audit Trail Policy Changes

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

Identifies changes for HANA DB audit trail policies. Source Action: Create / update existing audit policy in security definitions. Data Sources: SAP LogServ - HANA DB (Syslog)

MITRE ATT&CK coverage

Tactic	Techniques
Persistence	No specific technique
Stealth	No specific technique
Lateral Movement	No specific technique

Rule body kusto

id: e8394afb-82a7-4718-8d31-cc57ad352fa8
kind: Scheduled
name: SAP LogServ - HANA DB - Audit Trail Policy Changes
description: |
  Identifies changes for HANA DB audit trail policies.
  
  Source Action: Create / update existing audit policy in security definitions.
  
  *Data Sources: SAP LogServ - HANA DB (Syslog)*
severity: High
status: Available
requiredDataConnectors:
  - connectorId: SAPLogServ
    dataTypes:
      - SAPLogServ_CL
queryFrequency: 10m
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
  - Persistence
  - LateralMovement
  - DefenseEvasion
relevantTechniques: []
query: |
  let AuditTimeAgo = 60m;
  SAPLogServ_CL
  | where TimeGenerated >= ago(AuditTimeAgo)
  | where clz_subdir == "hanaaudit"
  | extend raw_split = split(Raw, ";")
  | extend
    event_timestamp__col_0 = tostring(raw_split[0]), 
    service_name__col_1 = tostring(raw_split[1]), 
    hostname__col_2 = tostring(raw_split[2]), 
    sid__col_3 = tostring(raw_split[3]), 
    instance_number__col_4 = tostring(raw_split[4]), 
    port_number__col_5 = tostring(raw_split[5]), 
    database_name__col_6 = tostring(raw_split[6]), 
    client_ip_address__col_7 = tostring(raw_split[7]), 
    client_name__col_8 = tostring(raw_split[8]), 
    client_process_id__col_9 = tostring(raw_split[9]), 
    client_port_number__col_10 = tostring(raw_split[10]), 
    policy_name__col_11 = tostring(raw_split[11]), 
    audit_level__col_12 = tostring(raw_split[12]), 
    audit_action__col_13 = tostring(raw_split[13]), 
    session_user__col_14 = tostring(raw_split[14]), 
    target_schema__col_15 = tostring(raw_split[15]), 
    target_object__col_16 = tostring(raw_split[16]), 
    privilege_name__col_17 = tostring(raw_split[17]), 
    grantable__col_18 = tostring(raw_split[18]), 
    role_name__col_19 = tostring(raw_split[19]), 
    target_principal__col_20 = tostring(raw_split[20]), 
    action_status__col_21 = tostring(raw_split[21]), 
    component__col_22 = tostring(raw_split[22]), 
    section__col_23 = tostring(raw_split[23]), 
    parameter__col_24 = tostring(raw_split[24]), 
    old_value__col_25 = tostring(raw_split[25]), 
    new_value__col_26 = tostring(raw_split[26]), 
    comment__col_27 = tostring(raw_split[27]), 
    executed_statement__col_28 = tostring(raw_split[28]), 
    session_id__col_29 = tostring(raw_split[29]), 
    application_user_name__col_30 = tostring(raw_split[30]), 
    role_schema_name__col_31 = tostring(raw_split[31]), 
    grantee_schema_name__col_32 = tostring(raw_split[32]), 
    origin_database_name__col_33 = tostring(raw_split[33]), 
    origin_user_name__col_34 = tostring(raw_split[34]), 
    xs_application_user_name__col_35 = tostring(raw_split[35]), 
    application_name__col_36 = tostring(raw_split[36]), 
    statement_user_name__col_37 = tostring(raw_split[37]), 
    create_time__col_38 = tostring(raw_split[38]), 
    xsa_message_ip__col_39 = tostring(raw_split[39]), 
    xsa_tenant__col_40 = tostring(raw_split[40]), 
    xsa_uuid__col_41 = tostring(raw_split[41]), 
    xsa_channel__col_42 = tostring(raw_split[42]), 
    xsa_attachment_id__col_43 = tostring(raw_split[43]), 
    xsa_attachment_name__col_44 = tostring(raw_split[44]), 
    xsa_organization_id__col_45 = tostring(raw_split[45]), 
    xsa_space_id__col_46 = tostring(raw_split[46]), 
    xsa_instance_id__col_47 = tostring(raw_split[47]), 
    xsa_binding_id__col_48 = tostring(raw_split[48]), 
    xsa_object__col_49 = tostring(raw_split[49]), 
    xsa_data_subject__col_50 = tostring(raw_split[50])
  | where audit_action__col_13 contains 'AUDIT POLICY' 
  | extend AlertRuleUniqueName = 'hanadb-audittrailpolicychanges-logserv'
eventGroupingSettings:
  aggregationKind: SingleAlert
entityMappings:
  - entityType: CloudApplication
    fieldMappings:
      - identifier: AppId
        columnName: sid__col_3
      - identifier: InstanceName
        columnName: database_name__col_6
  - entityType: Host
    fieldMappings:
      - identifier: FullName
        columnName: hostname__col_2
  - entityType: IP
    fieldMappings:
      - identifier: Address
        columnName: client_ip_address__col_7
alertDetailsOverride:
  alertDisplayNameFormat: 'SAP LogServ - HANA DB - Audit Trail Policy Change'
  alertDescriptionFormat: |
    {{comment__col_27}}
customDetails:
  SAP_User: session_user__col_14
version: 1.0.0

Stages and Predicates

Parameters

let AuditTimeAgo = 60m;

Stage 1: `source`

SAPLogServ_CL

Stage 2: `where`

| where TimeGenerated >= ago(AuditTimeAgo)

Stage 3: `where`

| where clz_subdir == "hanaaudit"

Stage 4: `extend`

| extend raw_split = split(Raw, ";")

Stage 5: `extend`

| extend
  event_timestamp__col_0 = tostring(raw_split[0]), 
  service_name__col_1 = tostring(raw_split[1]), 
  hostname__col_2 = tostring(raw_split[2]), 
  sid__col_3 = tostring(raw_split[3]), 
  instance_number__col_4 = tostring(raw_split[4]), 
  port_number__col_5 = tostring(raw_split[5]), 
  database_name__col_6 = tostring(raw_split[6]), 
  client_ip_address__col_7 = tostring(raw_split[7]), 
  client_name__col_8 = tostring(raw_split[8]), 
  client_process_id__col_9 = tostring(raw_split[9]), 
  client_port_number__col_10 = tostring(raw_split[10]), 
  policy_name__col_11 = tostring(raw_split[11]), 
  audit_level__col_12 = tostring(raw_split[12]), 
  audit_action__col_13 = tostring(raw_split[13]), 
  session_user__col_14 = tostring(raw_split[14]), 
  target_schema__col_15 = tostring(raw_split[15]), 
  target_object__col_16 = tostring(raw_split[16]), 
  privilege_name__col_17 = tostring(raw_split[17]), 
  grantable__col_18 = tostring(raw_split[18]), 
  role_name__col_19 = tostring(raw_split[19]), 
  target_principal__col_20 = tostring(raw_split[20]), 
  action_status__col_21 = tostring(raw_split[21]), 
  component__col_22 = tostring(raw_split[22]), 
  section__col_23 = tostring(raw_split[23]), 
  parameter__col_24 = tostring(raw_split[24]), 
  old_value__col_25 = tostring(raw_split[25]), 
  new_value__col_26 = tostring(raw_split[26]), 
  comment__col_27 = tostring(raw_split[27]), 
  executed_statement__col_28 = tostring(raw_split[28]), 
  session_id__col_29 = tostring(raw_split[29]), 
  application_user_name__col_30 = tostring(raw_split[30]), 
  role_schema_name__col_31 = tostring(raw_split[31]), 
  grantee_schema_name__col_32 = tostring(raw_split[32]), 
  origin_database_name__col_33 = tostring(raw_split[33]), 
  origin_user_name__col_34 = tostring(raw_split[34]), 
  xs_application_user_name__col_35 = tostring(raw_split[35]), 
  application_name__col_36 = tostring(raw_split[36]), 
  statement_user_name__col_37 = tostring(raw_split[37]), 
  create_time__col_38 = tostring(raw_split[38]), 
  xsa_message_ip__col_39 = tostring(raw_split[39]), 
  xsa_tenant__col_40 = tostring(raw_split[40]), 
  xsa_uuid__col_41 = tostring(raw_split[41]), 
  xsa_channel__col_42 = tostring(raw_split[42]), 
  xsa_attachment_id__col_43 = tostring(raw_split[43]), 
  xsa_attachment_name__col_44 = tostring(raw_split[44]), 
  xsa_organization_id__col_45 = tostring(raw_split[45]), 
  xsa_space_id__col_46 = tostring(raw_split[46]), 
  xsa_instance_id__col_47 = tostring(raw_split[47]), 
  xsa_binding_id__col_48 = tostring(raw_split[48]), 
  xsa_object__col_49 = tostring(raw_split[49]), 
  xsa_data_subject__col_50 = tostring(raw_split[50])

Stage 6: `where`

| where audit_action__col_13 contains 'AUDIT POLICY'

Stage 7: `extend`

| extend AlertRuleUniqueName = 'hanadb-audittrailpolicychanges-logserv'

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
`audit_action__col_13`	contains	`AUDIT POLICY`
`clz_subdir`	eq	`hanaaudit` transforms: `cased`

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
`raw_split`	`extend`
`action_status__col_21`	`extend`
`application_name__col_36`	`extend`
`application_user_name__col_30`	`extend`
`audit_action__col_13`	`extend`
`audit_level__col_12`	`extend`
`client_ip_address__col_7`	`extend`
`client_name__col_8`	`extend`
`client_port_number__col_10`	`extend`
`client_process_id__col_9`	`extend`
`comment__col_27`	`extend`
`component__col_22`	`extend`
`create_time__col_38`	`extend`
`database_name__col_6`	`extend`
`event_timestamp__col_0`	`extend`
`executed_statement__col_28`	`extend`
`grantable__col_18`	`extend`
`grantee_schema_name__col_32`	`extend`
`hostname__col_2`	`extend`
`instance_number__col_4`	`extend`
`new_value__col_26`	`extend`
`old_value__col_25`	`extend`
`origin_database_name__col_33`	`extend`
`origin_user_name__col_34`	`extend`
`parameter__col_24`	`extend`
`policy_name__col_11`	`extend`
`port_number__col_5`	`extend`
`privilege_name__col_17`	`extend`
`role_name__col_19`	`extend`
`role_schema_name__col_31`	`extend`
`section__col_23`	`extend`
`service_name__col_1`	`extend`
`session_id__col_29`	`extend`
`session_user__col_14`	`extend`
`sid__col_3`	`extend`
`statement_user_name__col_37`	`extend`
`target_object__col_16`	`extend`
`target_principal__col_20`	`extend`
`target_schema__col_15`	`extend`
`xs_application_user_name__col_35`	`extend`
`xsa_attachment_id__col_43`	`extend`
`xsa_attachment_name__col_44`	`extend`
`xsa_binding_id__col_48`	`extend`
`xsa_channel__col_42`	`extend`
`xsa_data_subject__col_50`	`extend`
`xsa_instance_id__col_47`	`extend`
`xsa_message_ip__col_39`	`extend`
`xsa_object__col_49`	`extend`
`xsa_organization_id__col_45`	`extend`
`xsa_space_id__col_46`	`extend`
`xsa_tenant__col_40`	`extend`
`xsa_uuid__col_41`	`extend`
`AlertRuleUniqueName`	`extend`

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`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)

SAP LogServ - HANA DB - Audit Trail Policy Changes

MITRE ATT&CK coverage

Rule body kusto

Stages and Predicates

Parameters

Stage 1: `source`

Stage 2: `where`

Stage 3: `where`

Stage 4: `extend`

Stage 5: `extend`

Stage 6: `where`

Stage 7: `extend`

Indicators

Output fields

Keyboard shortcuts

Search operators

SAP LogServ - HANA DB - Audit Trail Policy Changes

MITRE ATT&CK coverage

Rule body kusto

Stages and Predicates

Parameters

Stage 1: source

Stage 2: where

Stage 3: where

Stage 4: extend

Stage 5: extend

Stage 6: where

Stage 7: extend

Indicators

Output fields

Stage 1: `source`

Stage 2: `where`

Stage 3: `where`

Stage 4: `extend`

Stage 5: `extend`

Stage 6: `where`

Stage 7: `extend`