Possible Remote Payload Download And Execution via 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 a shell invoking curl to fetch a remote payload and execute it inline on Linux hosts. This technique was used to exploit the Langflow os.popen remote code execution vulnerability to pull and run a second stage from attacker infrastructure. Inline download and execution through a shell is a common initial foothold pattern that merits investigation.

Reporting behind it

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Possible Remote Payload Download And Execution via 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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