Suspicious Hidden Executable and Immediate Network Connection

[rule]
description = """
Detects when an IP address is supplied as an argument to a hidden executable. Threat actors will drop hidden payloads
that are themselves droppers and when supplied with an ip address download additional payload stages or tools.
"""
id = "11cfb64b-1268-402e-9064-5a2d7af70cce"
license = "Elastic License v2"
name = "Suspicious Hidden Executable and Immediate Network Connection"
os_list = ["macos"]
version = "1.0.5"

query = '''
sequence by process.entity_id with maxspan=30s
[process where event.type == "start" and event.action == "exec" and process.name like~ ".*" and process.args regex~ "[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}"]
[network where event.type == "start"]
'''

min_endpoint_version = "8.16.0"
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 = "T1071"
name = "Application Layer Protocol"
reference = "https://attack.mitre.org/techniques/T1071/"
[[threat.technique.subtechnique]]
id = "T1071.001"
name = "Web Protocols"
reference = "https://attack.mitre.org/techniques/T1071/001/"


[[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"