Potential Data Exfiltration Through Wget

Last updated 5 days ago on 2026-01-07

Created 5 days ago on 2026-01-07

About

Detects the use of wget to upload files to an internet server. Threat actors often will collect data on a system and attempt to exfiltrate it back to their command and control servers. Use of wget in this way, while not inherently malicious, should be considered highly abnormal and suspicious activity.

Tags

Domain: EndpointOS: LinuxUse Case: Threat DetectionTactic: ExfiltrationData Source: Auditd ManagerData Source: Elastic DefendData Source: CrowdstrikeData Source: SentinelOneData Source: Elastic EndgameLanguage: eql

Severity

medium

Risk Score

MITRE ATT&CK™

Exfiltration (TA0010)(external, opens in a new tab or window)

↳ Exfiltration Over Alternative Protocol (T1048)(external, opens in a new tab or window)

License

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

Definition

Rule Type

Event Correlation Rule

Integration Pack

Prebuilt Security Detection Rules

Index Patterns

auditbeat-*endgame-*logs-auditd_manager.auditd-*logs-crowdstrike.fdr*logs-endpoint.events.process*logs-sentinel_one_cloud_funnel.*

Related Integrations

endpoint(external, opens in a new tab or window)

crowdstrike(external, opens in a new tab or window)

sentinel_one_cloud_funnel(external, opens in a new tab or window)

auditd_manager(external, opens in a new tab or window)

Query

✄𐘗text code block:
✄𐘗process where host.os.type == "linux" and event.type == "start" and
event.action in ("exec", "exec_event", "start", "ProcessRollup2", "executed", "process_started") and
process.name == "wget" and process.args like ("--post-file=*", "--body-file=*")

Install detection rules in Elastic Security

Detect Potential Data Exfiltration Through Wget 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(external, opens in a new tab or window).