Malicious Node Runtime Spawning Shell to Download Python Payload via Axios Compromise

ATT&CK techniques

Initial Access → Execution

Recon
Resource Dev
Initial Access
- T1195.002Compromise Software Supply Chain
Execution
- T1059.004Unix Shell
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects a Node or Bun runtime spawning a shell that uses curl to fetch a Python loader into tmp and launches it with nohup as observed in the Axios npm supply chain compromise. A JavaScript package executing curl and python3 in sequence indicates malicious postinstall behavior staging a backdoor on the developer host.

Reporting behind it

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Malicious Node Runtime Spawning Shell to Download Python Payload via Axios Compromise

Pivot detection · T1059.004 · 9 related

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

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