Elastic Security Detection Rules

BPF filter applied using TC

Last updated 5 months ago on 2025-03-20
Created 3 years ago on 2022-07-11

About

Detects when the tc (transmission control) binary is utilized to set a BPF (Berkeley Packet Filter) on a network interface. Tc is used to configure Traffic Control in the Linux kernel. It can shape, schedule, police and drop traffic. A threat actor can utilize tc to set a bpf filter on an interface for the purpose of manipulating the incoming traffic. This technique is not at all common and should indicate abnormal, suspicious or malicious activity.
Tags
Domain: EndpointOS: LinuxUse Case: Threat DetectionTactic: ExecutionThreat: TripleCrossData Source: Elastic EndgameData Source: Elastic DefendData Source: SentinelOneLanguage: eql
Severity
high
Risk Score
73
MITRE ATT&CK™

Execution (TA0002)(opens in a new tab or window)

↳ Command and Scripting Interpreter (T1059)(opens in a new tab or window)

License
Elastic License v2(opens in a new tab or window)

Definition

Rule Type
Event Correlation Rule
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
endgame-*logs-endpoint.events.process*logs-sentinel_one_cloud_funnel.*
Related Integrations

endpoint(opens in a new tab or window)

sentinel_one_cloud_funnel(opens in a new tab or window)

Query
process where host.os.type == "linux" and event.type == "start" and process.executable == "/usr/sbin/tc" and
process.args == "filter" and process.args == "add" and process.args == "bpf" and
not process.parent.executable == "/usr/sbin/libvirtd"

Install detection rules in Elastic Security

Detect BPF filter applied using TC in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).