File Cloned by Unsigned or Untrusted Process

[rule]
description = """
Detects when a file is cloned by an unsigned or untrusted process. Cloning of files is highly abnormal but especially so
when done by an unsigned or untrusted process to duplicate a file or payload via api call.
"""
id = "aac13c8f-fd32-43c8-b71c-85019ad6fe50"
license = "Elastic License v2"
name = "File Cloned by Unsigned or Untrusted Process"
os_list = ["macos"]
version = "1.0.4"

query = '''
file where event.action == "clone" and 
 (process.code_signature.exists == false or process.code_signature.trusted == false)
'''

min_endpoint_version = "8.11.1"
optional_actions = []
[[actions]]
action = "kill_process"
field = "Effective_process.executable"
state = 0

[[actions]]
action = "kill_process"
field = "process.entity_id"
state = 0

[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1559"
name = "Inter-Process Communication"
reference = "https://attack.mitre.org/techniques/T1559/"


[threat.tactic]
id = "TA0002"
name = "Execution"
reference = "https://attack.mitre.org/tactics/TA0002/"

[internal]
min_endpoint_version = "8.11.1"