shashank-elastic
81 lines
4.0 KiB
TOML
81 lines
4.0 KiB
TOML
[metadata]
|
|
creation_date = "2022/06/20"
|
|
integration = ["endpoint"]
|
|
maturity = "production"
|
|
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
|
|
min_stack_version = "8.3.0"
|
|
updated_date = "2023/10/16"
|
|
|
|
[rule]
|
|
author = ["Elastic"]
|
|
description = """
|
|
This rule monitors for suspicious activities that may indicate an attacker attempting to execute arbitrary code within
|
|
a PostgreSQL environment. Attackers can execute code via PostgreSQL as a result of gaining unauthorized access to a
|
|
public facing PostgreSQL database or exploiting vulnerabilities, such as remote command execution and SQL injection
|
|
attacks, which can result in unauthorized access and malicious actions, and facilitate post-exploitation activities
|
|
for unauthorized access and malicious actions.
|
|
"""
|
|
from = "now-9m"
|
|
index = ["logs-endpoint.events.*", "endgame-*"]
|
|
language = "eql"
|
|
license = "Elastic License v2"
|
|
name = "Potential Code Execution via Postgresql"
|
|
risk_score = 47
|
|
rule_id = "2a692072-d78d-42f3-a48a-775677d79c4e"
|
|
setup = """
|
|
|
|
This rule requires data coming in from Elastic Defend.
|
|
|
|
### Elastic Defend Integration Setup
|
|
Elastic Defend is integrated into the Elastic Agent using Fleet. Upon configuration, the integration allows
|
|
the Elastic Agent to monitor events on your host and send data to the Elastic Security app.
|
|
|
|
#### Prerequisite Requirements:
|
|
- Fleet is required for Elastic Defend.
|
|
- To configure Fleet Server refer to the [documentation](https://www.elastic.co/guide/en/fleet/current/fleet-server.html).
|
|
|
|
#### The following steps should be executed in order to add the Elastic Defend integration on a Linux System:
|
|
- Go to the Kibana home page and click Add integrations.
|
|
- In the query bar, search for Elastic Defend and select the integration to see more details about it.
|
|
- Click Add Elastic Defend.
|
|
- Configure the integration name and optionally add a description.
|
|
- Select the type of environment you want to protect, either Traditional Endpoints or Cloud Workloads.
|
|
- Select a configuration preset. Each preset comes with different default settings for Elastic Agent, you can further customize these later by configuring the Elastic Defend integration policy. [Helper guide](https://www.elastic.co/guide/en/security/current/configure-endpoint-integration-policy.html).
|
|
- We suggest to select "Complete EDR (Endpoint Detection and Response)" as a configuration setting, that provides "All events; all preventions"
|
|
- Enter a name for the agent policy in New agent policy name. If other agent policies already exist, you can click the Existing hosts tab and select an existing policy instead.
|
|
For more details on Elastic Agent configuration settings, refer to the [helper guide](https://www.elastic.co/guide/en/fleet/8.10/agent-policy.html).
|
|
- Click Save and Continue.
|
|
- To complete the integration, select Add Elastic Agent to your hosts and continue to the next section to install the Elastic Agent on your hosts.
|
|
For more details on Elastic Defend refer to the [helper guide](https://www.elastic.co/guide/en/security/current/install-endpoint.html).
|
|
|
|
"""
|
|
severity = "medium"
|
|
tags = ["Domain: Endpoint", "OS: Linux", "Use Case: Threat Detection", "Tactic: Execution", "Data Source: Elastic Endgame", "Data Source: Elastic Defend"]
|
|
type = "eql"
|
|
|
|
query = '''
|
|
process where host.os.type == "linux" and event.action in ("exec", "exec_event", "fork", "fork_event") and
|
|
event.type == "start" and user.name == "postgres" and (
|
|
(process.parent.args : "*sh" and process.parent.args : "echo*") or
|
|
(process.args : "*sh" and process.args : "echo*")
|
|
) and not process.parent.name : "puppet"
|
|
'''
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
|
|
[[rule.threat.technique]]
|
|
id = "T1059"
|
|
name = "Command and Scripting Interpreter"
|
|
reference = "https://attack.mitre.org/techniques/T1059/"
|
|
|
|
[[rule.threat.technique.subtechnique]]
|
|
id = "T1059.004"
|
|
name = "Unix Shell"
|
|
reference = "https://attack.mitre.org/techniques/T1059/004/"
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0002"
|
|
name = "Execution"
|
|
reference = "https://attack.mitre.org/tactics/TA0002/"
|