Detection rules › Kusto
Objects Deleted from Malware Detection Exclusions
Detects when an object is deleted from malware detection exclusions.
Rule body kusto
id: f4cad1aa-a1e2-46dc-bf09-6cf8dc67f0ca
name: Objects Deleted from Malware Detection Exclusions
description: Detects when an object is deleted from malware detection exclusions.
severity: Informational
status: Available
requiredDataConnectors:
- connectorId: Syslog
dataTypes:
- Syslog
- connectorId: SyslogAma
dataTypes:
- Syslog
queryFrequency: 1d
queryPeriod: 1d
triggerOperator: gt
triggerThreshold: 0
eventGroupingSettings:
aggregationKind: AlertPerResult
tactics: []
relevantTechniques: []
query: "Veeam_GetSecurityEvents\n| where instanceId == 42270\n| extend RemovedObjectNames\
\ = extract(\"RemovedObjectNames=\\\"([^\\\"]*)\\\"\", 1, SyslogMessage)\n| project\n\
\ Date = format_datetime(TimeGenerated, 'dd.MM.yyyy HH:mm'),\n DataSource\
\ = original_host,\n EventId = instanceId,\n [\"User Name\"] = user,\n \
\ [\"Object Names\"] = RemovedObjectNames,\n MessageDetails = Description,\n\
\ Severity = SeverityDescription"
version: 1.0.1
kind: Scheduled
customDetails:
Date: Date
VbrHostName: DataSource
EventId: EventId
MessageDetails: MessageDetails
Severity: Severity
Stages and Predicates
Stage 1: source
Veeam_GetSecurityEvents
Stage 2: where
| where instanceId == 42270
Stage 3: extend
| extend RemovedObjectNames = extract("RemovedObjectNames=\"([^\"]*)\"", 1, SyslogMessage)
Stage 4: project
| project
Date = format_datetime(TimeGenerated, 'dd.MM.yyyy HH:mm'),
DataSource = original_host,
EventId = instanceId,
["User Name"] = user,
["Object Names"] = RemovedObjectNames,
MessageDetails = Description,
Severity = SeverityDescription
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 |
|---|---|---|
instanceId | eq |
|
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 |
|---|---|
DataSource | project |
Date | project |
EventId | project |
MessageDetails | project |
Object Names | project |
Severity | project |
User Name | project |