Suspicious Embargo Service irnagentd Creation via Process Creation

PremiumReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-09-24
Updated
2026-09-24

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 a Windows service named irnagentd via sc.exe, a persistence and execution artifact of the Embargo ransomware written in Rust. The service is used to run the ransomware payload with elevated privileges. This indicates service-based persistence in a ransomware intrusion.

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Suspicious Embargo Service irnagentd Creation via Process Creation
Pivot detection · T1543.003 · 9 related

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