Suspicious ESXi Management Agent Stop via vpxa init Script (via process_creation)

PremiumReviewedSigma · Medium · v1
Product
linux
Category
process_creation
Author
HuntRule
Published
2026-10-21
Updated
2026-10-21

ATT&CK techniques

  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. C2

  13. Exfiltration

  14. Impact

What it detects

This rule detects stopping the ESXi vpxa management agent through its init.d script, an evasion step in the RansomHouse MrAgent playbook that severs vCenter oversight before ransomware runs. Disabling vpxa blinds central management while the host is encrypted.

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Malicious WinRing0 Vulnerable Driver Load for Coin Mining
Windows Security Log: Defendnot scheduled task (defendnot) persistence via --from-autorun
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Suspicious ESXi Management Agent Stop via vpxa init Script (via process_creation)
Pivot detection · T1685 · 9 related

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