Suspicious Node.js Script Execution from AppData Roaming

PremiumReviewedSigma · Medium · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-09-08
Updated
2026-09-08

ATT&CK techniques

Execution → Priv Esc
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Defense Evasion

  5. Cred Access

  6. Discovery

  7. Lateral Movement

  8. Collection

  9. C2

  10. Exfiltration

  11. Impact

What it detects

This rule detects the Node.js runtime executing from a hidden node_x86 directory under user AppData Roaming. This matches the persistence footprint of a malicious Windsurf IDE extension that stages its loader outside standard install paths and communicates over the Solana blockchain.

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Suspicious Run Key Persistence Pointing to ProgramData Executable (via registry_set)
Suspicious Run Key Persistence Pointing to WScript via PhantomVAI Loader (via registry_set)
Suspicious Run Key Persistence Named Updater
Suspicious Node.js Script Execution from AppData Roaming
Pivot detection · T1547.001 · 9 related

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