Suspicious Remote Javascript Evaluation via Nodejs

[rule]
description = """
Detects when Node.js makes an outbound network connection followed immediately by the command line evaluation of
JavaScript. Threat actors will host a remote JavaScript payload that will be fetched and executed via the Node.js
evaluate flag.
"""
id = "57bb41f8-091f-42d5-9eaf-588dfa32d7e3"
license = "Elastic License v2"
name = "Suspicious Remote Javascript Evaluation via Nodejs"
os_list = ["macos"]
reference = ["https://kl4r10n.tech/blog/dprk-new-malware"]
version = "1.0.5"

query = '''
sequence with maxspan=20s
[network where event.action == "connection_attempted" and process.name == "node" and
  not destination.domain in ("registry.npmjs.org", "classic.yarnpkg.com", "platform.claude.com", "api.anthropic.com", "registry.yarnpkg.com", "api.z.ai", 
                             "telemetry.nuxt.com", "api.fontshare.com", "yarnpkg.com", "telemetry-staging.elastic.co", "elastic.litellm-prod.ai", 
                             "chatgpt.com", "bedrock-runtime.us-east-1.amazonaws.com")] by process.entity_id
[process where event.type == "start" and event.action == "exec" and process.name == "node" and
 process.args == "-e" and process.args_count == 3 and
 not process.command_line : ("*try*require*postinstall*catch*", "*import*postinstall*catch*")] by process.parent.entity_id
'''

min_endpoint_version = "8.16.0"
optional_actions = []
[[actions]]
action = "kill_process"
field = "process.entity_id"
state = 0

[[actions]]
action = "kill_process"
field = "process.entity_id"
state = 1

[[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 = "T1059.007"
name = "JavaScript"
reference = "https://attack.mitre.org/techniques/T1059/007/"



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

[internal]
min_endpoint_version = "8.16.0"