Malicious EtherRAT C2 Exfiltration Endpoints via HTTP (via proxy)

PremiumReviewedSigma · High · v1
Category
proxy
Author
HuntRule
Published
2026-10-29
Updated
2026-10-29

ATT&CK techniques

C2 → Exfiltration
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. Impact

What it detects

This rule detects HTTP requests to the reobfuscation and crypto key endpoints used by the EtherRAT command and control infrastructure. These paths are used by the React2Shell implant to fetch payloads and exfiltrate harvested wallet and credential material. Traffic to these specific endpoints indicates active command and control communication.

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Pivot detection · T1071.001 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.