Elastic Security Detection Rules

Data Encrypted via OpenSSL Utility

Last updated a day ago on 2026-03-26
Created a day ago on 2026-03-26

About

Identifies the execution of the OpenSSL utility to encrypt data. Adversaries may use OpenSSL to encrypt data to disrupt the availability of their target's data and may attempt to hold the organization's data to ransom for the purposes of extortion.
Tags
Domain: EndpointOS: LinuxOS: WindowsOS: macOSUse Case: Threat DetectionTactic: Defense EvasionTactic: CollectionData Source: Elastic DefendData Source: Elastic EndgameData Source: CrowdstrikeData Source: SentinelOneData Source: Auditd ManagerData Source: Windows Security Event LogsData Source: SysmonLanguage: eql
Severity
low
Risk Score
21
MITRE ATT&CK™

Defense Evasion (TA0005)(external, opens in a new tab or window)

↳ Obfuscated Files or Information (T1027)(external, opens in a new tab or window)

Collection (TA0009)(external, opens in a new tab or window)

↳ Data Staged (T1074)(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
endgame-*logs-crowdstrike.fdr*logs-endpoint.events.process-*logs-sentinel_one_cloud_funnel.*auditbeat-*logs-auditd_manager.auditd-*logs-system.security*logs-windows.forwarded*logs-windows.sysmon_operational-*winlogbeat-*
Related Integrations

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

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

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

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

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

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

Query
text code block:
process where event.type == "start" and event.action in ("start", "exec", "executed", "exec_event", "ProcessRollup2") and
process.name : "openssl*" and process.args : "enc" and process.args : "-in" and process.args : "-out"

Install detection rules in Elastic Security

Detect Data Encrypted via OpenSSL Utility 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).