Malicious AppleScript Execution of curl-Fetched Shell Payload via osascript (via process_creation)

ATT&CK techniques

Execution

Recon
Resource Dev
Initial Access
Execution
- T1059.002AppleScript
- T1059.004Unix Shell
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects the RustyAttr execution chain where a shell payload fetched with curl is run through osascript do shell script, a macOS technique used by Lazarus per Group-IB to launch remotely retrieved commands. Adversaries combine command substitution with AppleScript to execute downloaded scripts in memory, so this pattern surfaces hands-on payload execution.

Reporting behind it

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Malicious AppleScript Execution of curl-Fetched Shell Payload via osascript (via process_creation)

Pivot detection · T1059.004 · 9 related

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