Suspicious Shell Script Download and Execution via curl Piped to Bash on Linux (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 bash one-liner that curls a remote shell script, grants it execute permission and runs it, the Linux ClickFix behavior in the APT36 campaign delivering mapeal.sh. Adversaries leverage a pasted terminal command from a lure page to fetch and immediately execute the second-stage script.

Reporting behind it

Related detections9 linkedT1059.004 — drag to rearrange

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Malicious Linux Payload Download and Execution Chain via Wget and Chmod (via process_creation)

Suspicious Shell Script Download and Execution via curl Piped to Bash on Linux (via process_creation)

Pivot detection · T1059.004 · 9 related

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