Justin Ibarra
61deed3fd2
* [Rule Tuning] Add timestamp_override field to 7.11.0 rules * Lock versions for 7.11.2 rules
61 lines
1.7 KiB
TOML
61 lines
1.7 KiB
TOML
[metadata]
|
|
creation_date = "2020/02/18"
|
|
maturity = "production"
|
|
updated_date = "2020/02/16"
|
|
|
|
[rule]
|
|
author = ["Elastic"]
|
|
description = """
|
|
Compiled HTML files (.chm) are commonly distributed as part of the Microsoft HTML Help system. Adversaries may conceal
|
|
malicious code in a CHM file and deliver it to a victim for execution. CHM content is loaded by the HTML Help executable
|
|
program (hh.exe).
|
|
"""
|
|
false_positives = [
|
|
"""
|
|
The HTML Help executable program (hh.exe) runs whenever a user clicks a compiled help (.chm) file or menu item that
|
|
opens the help file inside the Help Viewer. This is not always malicious, but adversaries may abuse this technology
|
|
to conceal malicious code.
|
|
""",
|
|
]
|
|
index = ["winlogbeat-*", "logs-endpoint.events.*"]
|
|
language = "kuery"
|
|
license = "Elastic License"
|
|
name = "Process Activity via Compiled HTML File"
|
|
risk_score = 21
|
|
rule_id = "e3343ab9-4245-4715-b344-e11c56b0a47f"
|
|
severity = "low"
|
|
tags = ["Elastic", "Host", "Windows", "Threat Detection", "Execution"]
|
|
timestamp_override = "event.ingested"
|
|
type = "query"
|
|
|
|
query = '''
|
|
event.category:process and event.type:(start or process_started) and process.name:hh.exe
|
|
'''
|
|
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0002"
|
|
name = "Execution"
|
|
reference = "https://attack.mitre.org/tactics/TA0002/"
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
[[rule.threat.technique]]
|
|
id = "T1218"
|
|
name = "Signed Binary Proxy Execution"
|
|
reference = "https://attack.mitre.org/techniques/T1218/"
|
|
[[rule.threat.technique.subtechnique]]
|
|
id = "T1218.001"
|
|
name = "Compiled HTML File"
|
|
reference = "https://attack.mitre.org/techniques/T1218/001/"
|
|
|
|
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0005"
|
|
name = "Defense Evasion"
|
|
reference = "https://attack.mitre.org/tactics/TA0005/"
|
|
|