Restic Backup Tool Exfiltration to Cloud Object Storage

ATT&CK techniques

Collection → Exfiltration

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
- T1560Archive Collected Data
C2
Exfiltration
- T1567.002Exfiltration to Cloud Storage
Impact

What it detects

This rule detects the restic backup utility or its environment variables being used together with a cloud object storage endpoint such as Backblaze B2 or Wasabi. Huntress observed operators abusing restic, sometimes renamed to dns.exe, to back up and exfiltrate victim data to attacker-controlled buckets. Pairing backup tooling with third-party object storage destinations indicates data theft rather than sanctioned backup.

Reporting behind it

Related detections9 linkedT1567.002 — drag to rearrange

Malicious Data Exfiltration via Backblaze B2 CLI

Malicious Data Exfiltration via Restic Remote Backup

Malicious Data Exfiltration to MEGA via Rclone

Suspicious Rclone Data Exfiltration with Include Filter

Suspicious Rclone Data Exfiltration to Mega Cloud Storage (via process_creation)

Suspicious CloudScout hxkz_zip Exfiltration Archive Creation via File System

Possible Gamaredon Dead-Drop C2 via Telegraph and GoFile Web Services

Suspicious Data Exfiltration via Rclone Remote Copy

Suspicious Data Exfiltration via rclone

Restic Backup Tool Exfiltration to Cloud Object Storage

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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