Jonhnathan
063386829c
* win folder
* Other folders
* Update test_all_rules.py
* .
* updated missing elastic defend tags
---------
Co-authored-by: terrancedejesus <terrance.dejesus@elastic.co>
(cherry picked from commit 4233fef238)
72 lines
2.4 KiB
TOML
72 lines
2.4 KiB
TOML
[metadata]
|
|
creation_date = "2020/04/29"
|
|
integration = ["endpoint"]
|
|
maturity = "production"
|
|
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
|
|
min_stack_version = "8.3.0"
|
|
updated_date = "2023/08/24"
|
|
|
|
[rule]
|
|
author = ["Elastic"]
|
|
description = """
|
|
Users can mark specific files as hidden simply by putting a "." as the first character in the file or folder name.
|
|
Adversaries can use this to their advantage to hide files and folders on the system for persistence and defense evasion.
|
|
This rule looks for hidden files or folders in common writable directories.
|
|
"""
|
|
false_positives = [
|
|
"""
|
|
Certain tools may create hidden temporary files or directories upon installation or as part of their normal
|
|
behavior. These events can be filtered by the process arguments, username, or process name values.
|
|
""",
|
|
]
|
|
from = "now-9m"
|
|
index = ["auditbeat-*", "logs-endpoint.events.*"]
|
|
language = "eql"
|
|
license = "Elastic License v2"
|
|
max_signals = 33
|
|
name = "Creation of Hidden Files and Directories via CommandLine"
|
|
note = """## Setup
|
|
|
|
If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
|
|
"""
|
|
risk_score = 47
|
|
rule_id = "b9666521-4742-49ce-9ddc-b8e84c35acae"
|
|
severity = "medium"
|
|
tags = ["Domain: Endpoint", "OS: Linux", "Use Case: Threat Detection", "Tactic: Defense Evasion", "Data Source: Elastic Defend"]
|
|
timestamp_override = "event.ingested"
|
|
type = "eql"
|
|
|
|
query = '''
|
|
process where host.os.type == "linux" and event.type == "start" and
|
|
process.working_directory in ("/tmp", "/var/tmp", "/dev/shm") and
|
|
process.args regex~ """\.[a-z0-9_\-][a-z0-9_\-\.]{1,254}""" and
|
|
not process.name in ("ls", "find", "grep", "git")
|
|
'''
|
|
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
[[rule.threat.technique]]
|
|
id = "T1564"
|
|
name = "Hide Artifacts"
|
|
reference = "https://attack.mitre.org/techniques/T1564/"
|
|
[[rule.threat.technique.subtechnique]]
|
|
id = "T1564.001"
|
|
name = "Hidden Files and Directories"
|
|
reference = "https://attack.mitre.org/techniques/T1564/001/"
|
|
|
|
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0005"
|
|
name = "Defense Evasion"
|
|
reference = "https://attack.mitre.org/tactics/TA0005/"
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0003"
|
|
name = "Persistence"
|
|
reference = "https://attack.mitre.org/tactics/TA0003/"
|
|
|