Malicious Remote Script Piped to Shell via Curl (via process_creation)

ATT&CK techniques

Execution → C2

Recon
Resource Dev
Initial Access
Execution
- T1059.004Unix Shell
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1105Ingress Tool Transfer
Exfiltration
Impact

What it detects

This rule detects curl fetching a remote script and piping it directly into a shell interpreter, a common Linux and container compromise technique. Observed in the Elastic Security Labs TeamPCP container attack scenario where curl -fsSL of proxy.sh piped to bash bootstraps the intrusion and downloads further tooling.

Reporting behind it

Related detections9 linkedT1059.004 — drag to rearrange

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Suspicious Remote Script Execution via curl Piped to bash with nohup on macOS (via process_creation)

Suspicious Botnet Payload Drop to Hidden Xdiag Temp Path

Malicious Remote Payload Piped to Shell via wget on PAN-OS

Suspicious Remote Script Downloaded via curl and Piped to Shell (via process_creation)

Malicious Remote Script Piped to Shell via Curl (via process_creation)

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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