[rule]
description = """
Detects osascript spawning shell interpreters to execute curl commands within 15 seconds. This pattern indicates
malicious AppleScript workflows used for payload downloads or C2 communication.
"""
id = "92840250-1d07-4e8b-9a72-d2ed03dc6bc6"
license = "Elastic License v2"
name = "Shell Command Curl Execution via Osascript"
os_list = ["macos"]
version = "1.0.3"
query = '''
sequence by process.parent.entity_id with maxspan=15s
[process where event.type == "start" and event.action == "exec" and process.args == "-c" and process.name in ("bash", "sh", "zsh") and process.parent.name == "osascript"]
[process where event.type == "start" and event.action == "exec" and process.name in ("curl", "nscurl")]
'''
min_endpoint_version = "8.16.0"
optional_actions = []
[[actions]]
action = "kill_process"
field = "process.entity_id"
state = 0
[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1059"
name = "Command and Scripting Interpreter"
reference = "https://attack.mitre.org/techniques/T1059/"
[[threat.technique.subtechnique]]
id = "T1059.002"
name = "AppleScript"
reference = "https://attack.mitre.org/techniques/T1059/002/"
[threat.tactic]
id = "TA0002"
name = "Execution"
reference = "https://attack.mitre.org/tactics/TA0002/"
[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1105"
name = "Ingress Tool Transfer"
reference = "https://attack.mitre.org/techniques/T1105/"
[threat.tactic]
id = "TA0011"
name = "Command and Control"
reference = "https://attack.mitre.org/tactics/TA0011/"
[internal]
min_endpoint_version = "8.16.0"