rules/_deprecated/initial_access_cross_site_scripting.toml

[metadata]
creation_date = "2023/07/12"
integration = ["apm"]
maturity = "deprecated"
updated_date = "2025/03/04"
deprecation_date = "2025/03/04"

[rule]
author = ["Elastic"]
building_block_type = "default"
description = """
Cross-Site Scripting (XSS) is a type of attack in which malicious scripts are injected into trusted websites. In XSS
attacks, an attacker uses a benign web application to send malicious code, generally in the form of a browser-side
script. This detection rule identifies the potential malicious executions of such browser-side scripts.
"""
from = "now-119m"
index = ["apm-*-transaction*", "traces-apm*"]
interval = "60m"
language = "eql"
license = "Elastic License v2"
name = "Potential Cross Site Scripting (XSS)"
references = ["https://github.com/payloadbox/xss-payload-list"]
risk_score = 21
rule_id = "4aa58ac6-4dc0-4d18-b713-f58bf8bd015c"
severity = "low"
tags = ["Data Source: APM", "Use Case: Threat Detection", "Tactic: Initial Access","Rule Type: BBR"]
timestamp_override = "event.ingested"
type = "eql"

query = '''
any where processor.name == "transaction" and
url.fragment : ("<iframe*", "*prompt(*)*", "<script*>", "<svg*>", "*onerror=*", "*javascript*alert*", "*eval*(*)*", "*onclick=*",
"*alert(document.cookie)*", "*alert(document.domain)*","*onresize=*","*onload=*","*onmouseover=*")
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1189"
name = "Drive-by Compromise"
reference = "https://attack.mitre.org/techniques/T1189/"


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