First Occurrence of IP Address For GitHub User

[metadata]
bypass_bbr_timing = true
creation_date = "2023/10/11"
integration = ["github"]
maturity = "production"
updated_date = "2025/12/24"

[rule]
author = ["Elastic"]
building_block_type = "default"
description = "Detects a new IP address used for a GitHub user not previously seen in the last 14 days.\n"
from = "now-9m"
index = ["logs-github.audit-*"]
language = "kuery"
license = "Elastic License v2"
name = "First Occurrence of IP Address For GitHub User"
risk_score = 21
rule_id = "3af4cb9b-973f-4c54-be2b-7623c0e21b2b"
severity = "low"
tags = [
    "Domain: Cloud",
    "Use Case: Threat Detection",
    "Use Case: UEBA",
    "Tactic: Initial Access",
    "Rule Type: BBR",
    "Data Source: Github",
]
timestamp_override = "event.ingested"
type = "new_terms"

query = '''
event.dataset:"github.audit" and event.category:"configuration" and
github.actor_ip:* and user.name:*
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1078"
name = "Valid Accounts"
reference = "https://attack.mitre.org/techniques/T1078/"
[[rule.threat.technique.subtechnique]]
id = "T1078.004"
name = "Cloud Accounts"
reference = "https://attack.mitre.org/techniques/T1078/004/"



[rule.threat.tactic]
id = "TA0001"
name = "Initial Access"
reference = "https://attack.mitre.org/tactics/TA0001/"

[rule.new_terms]
field = "new_terms_fields"
value = ["user.name", "github.actor_ip"]
[[rule.new_terms.history_window_start]]
field = "history_window_start"
value = "now-5d"