Malicious Data Exfiltration to MEGA 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 the rclone utility copying data to a remote with a high multi thread stream count as performed during the Trigona intrusion to exfiltrate files to MEGA cloud storage before encryption and this matters because bulk rclone transfers to cloud remotes are a common precursor to double extortion ransomware and are uncommon in normal endpoint activity.

Reporting behind it

Related detections9 linkedT1567.002 — drag to rearrange

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Suspicious Lambda Function Creation Across Regions in AWS Extortion Operation

Malicious Data Exfiltration via Renamed Rclone Using Masqueraded Configuration

Suspicious Cloud Exfiltration via Rclone

Suspicious Rclone Cloud Sync Execution for Data Exfiltration via Command Line

Suspicious Data Exfiltration via MEGAsync (via process_creation)

Malicious Data Exfiltration to MEGA 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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