Suspicious Curl Output Piped To Bash On macOS via ClickFix

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 curl download whose output is piped directly into a bash shell on macOS, matching the ClickFix social-engineering chain that tricks users into pasting a terminal command. This technique is used to deliver the Odyssey and ACR infostealers after a fake Cloudflare human-verification prompt. Fetching and executing remote code in one step lets the operator run a payload with no file written to disk beforehand.

Reporting behind it

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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)

Suspicious File Download to tmp and Quarantine Removal via curl and xattr

Suspicious Curl Output Piped To Bash On macOS via ClickFix

Pivot detection · T1059.004 · 9 related

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