Malicious Credential Exfiltration to webhook.site

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 curl posting data to a webhook.site endpoint, the exfiltration channel used by the Shai-Hulud worm to send harvested secrets to attacker-controlled webhooks. The worm labels these requests to correlate stolen data from each compromised host.

Reporting behind it

Related detections9 linkedT1567.002 — drag to rearrange

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Suspicious Cloud Exfiltration via Rclone

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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)

Malicious Credential Exfiltration to webhook.site

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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