Suspicious Cloud Exfiltration via Rclone

ATT&CK techniques

Exfiltration

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
- T1567.002Exfiltration to Cloud Storage
Impact

What it detects

This rule detects execution of the rclone cloud sync utility with copy or sync operations, a data-exfiltration technique used by the Karakurt extortion actor to push staged files to attacker-controlled cloud storage. Bulk transfer of internal data to an external cloud provider is a strong sign of exfiltration ahead of extortion.

Reporting behind it

Related detections9 linkedT1567.002 — drag to rearrange

Suspicious Rclone Cloud Sync Execution for Data Exfiltration via Command Line

Suspicious Data Exfiltration via MEGAsync (via process_creation)

Malicious Data Exfiltration via MinIO Client from Windows Temp

Suspicious Data Exfiltration to Backblaze B2 via rclone (via process_creation)

Suspicious Rclone Exfiltration via Masqueraded svchost Process Creation

Malicious Snowflake Bulk Data Exfiltration via External Stage COPY INTO (via cloud)

Possible C2 via Google Sheets API Using Formula Render Option by GRIDTIDE

Suspicious Rclone Data Transfer to Cloud Storage (via process_creation)

Suspicious Microsoft 365 File Download with Scripting User Agent and Spoofed Office Client (via m365)

Suspicious Cloud Exfiltration via Rclone

Pivot detection · T1567.002 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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