Cisco SE - Ransomware Activity

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Id	c9629114-0f49-4b50-9f1b-345287b2eebf
Rulename	Cisco SE - Ransomware Activity
Description	This rule is triggered when possible ransomware activity is detected on host.
Severity	High
Tactics	Impact
Techniques	T1486
Required data connectors	CiscoSecureEndpoint
Kind	Scheduled
Query frequency	15m
Query period	15m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cisco Secure Endpoint/Analytic Rules/CiscoSERansomwareActivityOnHost copy.yaml
Version	1.0.0
Arm template	c9629114-0f49-4b50-9f1b-345287b2eebf.json

KQL

CiscoSecureEndpoint
| where EventMessage has 'Suspected ransomware'
| extend HostCustomEntity = DstHostname, MalwareCustomEntity = ThreatName

YAML

version: 1.0.0
status: Available
queryPeriod: 15m
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cisco Secure Endpoint/Analytic Rules/CiscoSERansomwareActivityOnHost copy.yaml
relevantTechniques:
- T1486
description: |
    'This rule is triggered when possible ransomware activity is detected on host.'
kind: Scheduled
name: Cisco SE - Ransomware Activity
queryFrequency: 15m
id: c9629114-0f49-4b50-9f1b-345287b2eebf
requiredDataConnectors:
- connectorId: CiscoSecureEndpoint
  dataTypes:
  - CiscoSecureEndpoint
tactics:
- Impact
triggerThreshold: 0
severity: High
query: |
  CiscoSecureEndpoint
  | where EventMessage has 'Suspected ransomware'
  | extend HostCustomEntity = DstHostname, MalwareCustomEntity = ThreatName  
entityMappings:
- entityType: Host
  fieldMappings:
  - columnName: HostCustomEntity
    identifier: HostName
- entityType: Malware
  fieldMappings:
  - columnName: MalwareCustomEntity
    identifier: Name
triggerOperator: gt

ARM