shashank-elastic
82 lines
4.2 KiB
TOML
82 lines
4.2 KiB
TOML
[metadata]
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creation_date = "2023/03/07"
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integration = ["endpoint"]
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maturity = "production"
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min_stack_comments = "New fields added: required_fields, related_integrations, setup"
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min_stack_version = "8.3.0"
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updated_date = "2023/10/13"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies the execution of the PRoot utility, an open-source tool for user-space implementation of
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chroot, mount --bind, and binfmt_misc. Adversaries can leverage an open-source tool PRoot
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to expand the scope of their operations to multiple Linux distributions and simplify their necessary efforts.
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In a normal threat scenario, the scope of an attack is limited by the varying configurations of each Linux distribution.
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With PRoot, it provides an attacker with a consistent operational environment across different Linux distributions,
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such as Ubuntu, Fedora, and Alpine. PRoot also provides emulation capabilities that allow for malware built on other
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architectures, such as ARM, to be run.The post-exploitation technique called bring your own filesystem (BYOF),
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can be used by the threat actors to execute malicious payload or elevate privileges or perform network scans or
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orchestrate another attack on the environment. Although PRoot was originally not developed with malicious intent
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it can be easily tuned to work for one.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Potential Defense Evasion via PRoot"
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references = [
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"https://proot-me.github.io/",
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]
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risk_score = 47
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rule_id = "5c9ec990-37fa-4d5c-abfc-8d432f3dedd0"
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setup = """
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This rule requires data coming in from Elastic Defend.
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### Elastic Defend Integration Setup
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Elastic Defend is integrated into the Elastic Agent using Fleet. Upon configuration, the integration allows
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the Elastic Agent to monitor events on your host and send data to the Elastic Security app.
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#### Prerequisite Requirements:
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- Fleet is required for Elastic Defend.
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- To configure Fleet Server refer to the [documentation](https://www.elastic.co/guide/en/fleet/current/fleet-server.html).
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#### The following steps should be executed in order to add the Elastic Defend integration on a Linux System:
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- Go to the Kibana home page and click Add integrations.
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- In the query bar, search for Elastic Defend and select the integration to see more details about it.
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- Click Add Elastic Defend.
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- Configure the integration name and optionally add a description.
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- Select the type of environment you want to protect, either Traditional Endpoints or Cloud Workloads.
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- 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).
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- We suggest to select "Complete EDR (Endpoint Detection and Response)" as a configuration setting, that provides "All events; all preventions"
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- 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.
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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).
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- Click Save and Continue.
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- 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.
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For more details on Elastic Defend refer to the [helper guide](https://www.elastic.co/guide/en/security/current/install-endpoint.html).
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"""
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severity = "medium"
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tags = ["Domain: Endpoint", "OS: Linux", "Use Case: Threat Detection", "Tactic: Defense Evasion", "Data Source: Elastic Defend"]
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timestamp_override = "event.ingested"
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type = "eql"
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query = '''
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process where event.action == "exec" and process.parent.name =="proot" and host.os.type == "linux"
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'''
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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[[rule.threat.technique]]
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id = "T1211"
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name = "Exploitation for Defense Evasion"
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reference = "https://attack.mitre.org/techniques/T1211/"
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[rule.threat.tactic]
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id = "TA0005"
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name = "Defense Evasion"
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reference = "https://attack.mitre.org/tactics/TA0005/"
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