Malicious Data Exfiltration to Restic REST Server over HTTP (via process_creation)

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 restic backup utility being pointed at a remote REST endpoint over HTTP to back up file-share directories, the exfiltration channel used in the Nitrogen BlackCat intrusion to stage stolen data before ransomware. Adversaries repurpose restic as a fast deduplicating uploader to attacker-controlled REST servers, so restic writing to a rest http repository is a strong pre-encryption data-theft signal.

Reporting behind it

Related detections9 linkedT1567.002 — drag to rearrange

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Malicious Data Exfiltration to Restic REST Server over HTTP (via process_creation)

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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