Suspicious osascript Spawning Shell curl to External Host on macOS (via process_creation)

ATT&CK techniques

Execution → C2

Recon
Resource Dev
Initial Access
Execution
- T1059.002AppleScript
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1105Ingress Tool Transfer
Exfiltration
Impact

What it detects

This rule detects osascript spawning a shell that runs curl on macOS. The BlueNoroff backdoor decrypts an embedded AppleScript that launches a shell and uses curl to reach its command-and-control server and pull further stages, so this parent-child chain indicates scripted download activity from a document-borne implant.

Reporting behind it

Related detections9 linkedT1105 — drag to rearrange

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Suspicious osascript Spawning Shell curl to External Host on macOS (via process_creation)

Pivot detection · T1105 · 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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