Detection rules › Kusto

CiscoISE - Attempt to delete local store logs

Status
available
Severity
medium
Time window
5m
Source
github.com/Azure/Azure-Sentinel

'Detects when attempt to delete local store logs failed.'

MITRE ATT&CK coverage

TacticTechniques
Stealth

Rule body

id: b6549a28-d61c-476e-b350-4404352ee427
name: CiscoISE - Attempt to delete local store logs
description: |
  'Detects when attempt to delete local store logs failed.'
severity: Medium
status: Available
requiredDataConnectors:
  - connectorId: SyslogAma
    datatypes:
      - Syslog
queryFrequency: 5m
queryPeriod: 5m
triggerOperator: gt
triggerThreshold: 0
tactics:
  - DefenseEvasion
relevantTechniques:
  - T1070
query: |
  let lbtime = 5m;
  CiscoISEEvent
  | where TimeGenerated > ago(lbtime)
  | where EventId == '59103'
  | project TimeGenerated, DvcHostname, DvcIpAddr, DstUserName
  | extend HostCustomEntity = DvcHostname
  | extend IPCustomEntity = DvcIpAddr
  | extend AccountCustomEntity = DstUserName
entityMappings:
  - entityType: Account
    fieldMappings:
      - identifier: FullName
        columnName: AccountCustomEntity
  - entityType: IP
    fieldMappings:
      - identifier: Address
        columnName: IPCustomEntity
  - entityType: Host
    fieldMappings:
      - identifier: FullName
        columnName: HostCustomEntity
version: 1.0.3
kind: Scheduled

Stages and Predicates

Parameters

let lbtime = 5m;

Stage 1: source

CiscoISEEvent

Stage 2: where

| where TimeGenerated > ago(lbtime)

Stage 3: where

| where EventId == '59103'

Stage 4: project

| project TimeGenerated, DvcHostname, DvcIpAddr, DstUserName

Stage 5: extend (3 consecutive steps)

| extend HostCustomEntity = DvcHostname
| extend IPCustomEntity = DvcIpAddr
| extend AccountCustomEntity = DstUserName

Indicators

These rows show field, operator, and value matches.

Output fields

These fields are emitted when the rule matches.

FieldSource
DstUserNameproject
DvcHostnameproject
DvcIpAddrproject
TimeGeneratedproject
HostCustomEntityextend
IPCustomEntityextend
AccountCustomEntityextend