Successful API executed from a Tor exit node

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Id	0adab960-5565-4978-ba6d-044553e4acc4
Rulename	Successful API executed from a Tor exit node
Description	A successful API execution was detected from an IP address categorized as a TOR exit node by Threat Intelligence.
Severity	High
Tactics	Execution
Techniques	T1204
Required data connectors	AWS
Kind	Scheduled
Query frequency	1d
Query period	1d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Amazon Web Services/Analytic Rules/AWS_APIfromTor.yaml
Version	1.0.1
Arm template	0adab960-5565-4978-ba6d-044553e4acc4.json

KQL

let TorNodes = (
externaldata (TorIP:string)
[h@'https://firewalliplists.gypthecat.com/lists/kusto/kusto-tor-exit.csv.zip']
with (ignoreFirstRecord=true));
AWSCloudTrail
| where SourceIpAddress in (TorNodes) and isempty(ErrorCode) and isempty(ErrorMessage)
| extend UserIdentityArn = iif(isempty(UserIdentityArn), tostring(parse_json(Resources)[0].ARN), UserIdentityArn)
| extend UserName = tostring(split(UserIdentityArn, '/')[-1])
| extend AccountName = case( UserIdentityPrincipalid == "Anonymous", "Anonymous", isempty(UserIdentityUserName), UserName, UserIdentityUserName)
| extend AccountName = iif(AccountName contains "@", tostring(split(AccountName, '@', 0)[0]), AccountName),
    AccountUPNSuffix = iif(AccountName contains "@", tostring(split(AccountName, '@', 1)[0]), "")
| extend timestamp = TimeGenerated

YAML

status: Available
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Amazon Web Services/Analytic Rules/AWS_APIfromTor.yaml
query: |
  let TorNodes = (
  externaldata (TorIP:string)
  [h@'https://firewalliplists.gypthecat.com/lists/kusto/kusto-tor-exit.csv.zip']
  with (ignoreFirstRecord=true));
  AWSCloudTrail
  | where SourceIpAddress in (TorNodes) and isempty(ErrorCode) and isempty(ErrorMessage)
  | extend UserIdentityArn = iif(isempty(UserIdentityArn), tostring(parse_json(Resources)[0].ARN), UserIdentityArn)
  | extend UserName = tostring(split(UserIdentityArn, '/')[-1])
  | extend AccountName = case( UserIdentityPrincipalid == "Anonymous", "Anonymous", isempty(UserIdentityUserName), UserName, UserIdentityUserName)
  | extend AccountName = iif(AccountName contains "@", tostring(split(AccountName, '@', 0)[0]), AccountName),
      AccountUPNSuffix = iif(AccountName contains "@", tostring(split(AccountName, '@', 1)[0]), "")
  | extend timestamp = TimeGenerated  
requiredDataConnectors:
- dataTypes:
  - AWSCloudTrail
  connectorId: AWS
tactics:
- Execution
name: Successful API executed from a Tor exit node
relevantTechniques:
- T1204
severity: High
entityMappings:
- fieldMappings:
  - identifier: Name
    columnName: AccountName
  - identifier: UPNSuffix
    columnName: AccountUPNSuffix
  - identifier: CloudAppAccountId
    columnName: RecipientAccountId
  entityType: Account
- fieldMappings:
  - identifier: Address
    columnName: SourceIpAddress
  entityType: IP
kind: Scheduled
queryFrequency: 1d
description: |
    'A successful API execution was detected from an IP address categorized as a TOR exit node by Threat Intelligence.'
triggerThreshold: 0
triggerOperator: gt
version: 1.0.1
queryPeriod: 1d
id: 0adab960-5565-4978-ba6d-044553e4acc4

ARM