Network File Unzipped via Unsigned or Untrusted Binary

[rule]
description = """
Detects the decompression of a file into a specified folder directly from a network download using unzip via an unsigned
or untrusted binary.
"""
id = "28611239-08e6-47d5-a88b-76136670788c"
license = "Elastic License v2"
name = "Network File Unzipped via Unsigned or Untrusted Binary"
os_list = ["macos"]
version = "1.0.6"

query = '''
process where event.type == "start" and event.action == "exec" and process.name == "unzip" and 
 process.args: "/*/CFNetworkDownload*" and process.args == "-d" and 
 (process.parent.code_signature.trusted == false or process.parent.code_signature.exists == false) and
 not process.parent.name == "figma_agent"
'''

min_endpoint_version = "8.12.0"
optional_actions = []
[[actions]]
action = "kill_process"
field = "process.entity_id"
state = 0

[[actions]]
action = "kill_process"
field = "process.parent.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 = "T1059.004"
name = "Unix Shell"
reference = "https://attack.mitre.org/techniques/T1059/004/"



[threat.tactic]
id = "TA0002"
name = "Execution"
reference = "https://attack.mitre.org/tactics/TA0002/"
[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1027"
name = "Obfuscated Files or Information"
reference = "https://attack.mitre.org/techniques/T1027/"

[[threat.technique]]
id = "T1140"
name = "Deobfuscate/Decode Files or Information"
reference = "https://attack.mitre.org/techniques/T1140/"


[threat.tactic]
id = "TA0005"
name = "Defense Evasion"
reference = "https://attack.mitre.org/tactics/TA0005/"

[internal]
min_endpoint_version = "8.12.0"