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Whisper Security - Tor Exit Node Communication
Description
Identifies network traffic communicating with known Tor exit nodes. While Tor usage may be legitimate in some environments, unexpected Tor communication can indicate data exfiltration, C2 tunneling, or policy violations.
- Rule type
- Scheduled
- Version
- 1.0.0
- Declared status
- Available
- Query frequency
- 1h
- Query period
- 1d
- Trigger
- gt 0
Declared MITRE coverage
Declared sources
Metadata from the source file. No dependencies inferred from KQL.
Connectors
Data types
KQL query
Original query, unchanged.
// MITRE ATT&CK: T1090.003 - Proxy: Multi-hop Proxy
// Tactic: Command and Control
// Detects communication with Tor exit nodes using Whisper threat intelligence
let timeRange = 1d;
let torIndicators = WhisperThreatIntel_CL
| where TimeGenerated > ago(timeRange)
| where isTor == true
| project indicator, threatScore, threatLevel, feedNames, lastSeen;
let CommonSecurityLogSafe = union isfuzzy=true CommonSecurityLog, (datatable(TimeGenerated:datetime, DestinationIP:string, SourceIP:string, DeviceProduct:string, DeviceAction:string, DeviceVendor:string, Activity:string)[]);
CommonSecurityLogSafe
| where TimeGenerated > ago(timeRange)
| where isnotempty(DestinationIP)
| join kind=inner (torIndicators) on $left.DestinationIP == $right.indicator
| extend SourceIP = SourceIP, DestinationIP = DestinationIP
| project TimeGenerated, SourceIP, DestinationIP, DeviceProduct, DeviceAction, DeviceVendor, Activity, threatScore, threatLevel, feedNames
Declared entities
Related content
Links established from declared identifiers and solution manifests.
Source provenance
GitHubDisplayed values come from files in Azure/Azure-Sentinel. They describe the published template, not your workspace configuration.
- Commit
9800e51↗- Source identifier
f5567c93-91de-577a-b35e-c2807715493d
GSTEP / CATALOG TRACKING
Added to catalog : 16 Sept 2026 · 05:49 UTC
Last change observed : 16 Sept 2026 · 05:49 UTC