Malicious Data Exfiltration via Renamed Rclone Using Masqueraded Configuration

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 referencing a Rclone configuration file masquerading as a Windows host process file which Conti operators use to exfiltrate data to cloud storage. Observed in NCC Group research on Conti operations after the leaks using a renamed Rclone binary with a svchost.conf configuration. Cloud exfiltration via renamed Rclone is a common ransomware pre-encryption step.

Reporting behind it

Related detections9 linkedT1567.002 — drag to rearrange

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 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)

Malicious Data Exfiltration via Renamed Rclone Using Masqueraded Configuration

Pivot detection · T1567.002 · 9 related

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