Suspicious macOS Quarantine Bypass via xattr and chmod After curl Download

ATT&CK techniques

Execution

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

What it detects

This rule detects a shell one liner that downloads a payload with curl then strips the com.apple.quarantine attribute and makes it executable as used by UNC5142 macOS ClickFix delivery. This behavior bypasses Gatekeeper so downloaded malware can run without user prompts.

Reporting behind it

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Suspicious macOS Quarantine Bypass via xattr and chmod After curl Download

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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