Malicious Keyhunter Worker Systemd Unit File Creation

PremiumReviewedSigma · High · v1
Product
linux
Category
file_event
Author
HuntRule
Published
2026-07-17
Updated
2026-08-28

ATT&CK techniques

Persistence → Priv Esc
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Defense Evasion

  6. Cred Access

  7. Discovery

  8. Lateral Movement

  9. Collection

  10. C2

  11. Exfiltration

  12. Impact

What it detects

This rule detects creation of the keyhunter-worker systemd unit file dropped by the NATS-as-C2 credential harvesting campaign. The unit establishes persistence for a worker that connects to an attacker NATS broker and exfiltrates cloud and AI API keys. A unit file with this name is a strong indicator of compromise.

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Pivot detection · T1543.002 · 9 related

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