Suspicious Network Connection to Gmail via Nodejs

[rule]
description = """
Detects when the Node binary makes an outbound network connection to Gmails SMTP servers. Malicious NPM packages have
been seen using Gmail SMTP servers to exfiltrate sensitive data.
"""
id = "d8135e78-d8fa-4ce0-93fe-73c2af058dbd"
license = "Elastic License v2"
name = "Suspicious Network Connection to Gmail via Nodejs"
os_list = ["macos"]
reference = [
    "https://socket.dev/blog/gmail-for-exfiltration-malicious-npm-packages-target-solana-private-keys-and-drain-victim-s",
]
version = "1.0.3"

query = '''
sequence by process.entity_id with maxspan=1m
[process where event.type == "start" and event.action == "exec" and process.name == "node"]
[network where event.type == "start" and destination.domain in ("smtp.gmail.com", "smtp.gmail.com.")]
'''

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 = "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/"
[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1071"
name = "Application Layer Protocol"
reference = "https://attack.mitre.org/techniques/T1071/"
[[threat.technique.subtechnique]]
id = "T1071.003"
name = "Mail Protocols"
reference = "https://attack.mitre.org/techniques/T1071/003/"



[threat.tactic]
id = "TA0011"
name = "Command and Control"
reference = "https://attack.mitre.org/tactics/TA0011/"

[internal]
min_endpoint_version = "8.16.0"