Malicious Remote Script Piped Directly to a Shell (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 or wget output piped straight into sh or bash on Linux, a one-line download-and-execute pattern used to fetch and immediately run a remote payload. Piping a downloaded script to a shell is an ingress-and-execution technique tracked in the Red Canary Threat Detection Report. Detecting this chain surfaces remote code execution as it happens.

Reporting behind it

Related detections9 linkedT1059.004 — drag to rearrange

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Suspicious Bash Dev-TCP Reverse Shell Execution

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

Suspicious Downloaded Shell Stager Made Executable Via Chmod 777

HamsaUpdate Linux Payload Download via Wget Piped to Bash (via process_creation)

Malicious Curl to Shell Dropper from Paste Site via Command Line

Malicious Remote Script Piped Directly to a Shell (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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