Data Encrypted via OpenSSL Utility
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Data Encrypted via OpenSSL Utility
editIdentifies 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.
Rule type: eql
Rule indices:
- 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-*
Severity: low
Risk score: 21
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References: None
Tags:
- Domain: Endpoint
- OS: Linux
- OS: Windows
- OS: macOS
- Use Case: Threat Detection
- Tactic: Defense Evasion
- Tactic: Collection
- Data Source: Elastic Defend
- Data Source: Elastic Endgame
- Data Source: Crowdstrike
- Data Source: SentinelOne
- Data Source: Auditd Manager
- Data Source: Windows Security Event Logs
- Data Source: Sysmon
Version: 1
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editprocess 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"
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Obfuscated Files or Information
- ID: T1027
- Reference URL: https://attack.mitre.org/techniques/T1027/
-
Sub-technique:
- Name: Encrypted/Encoded File
- ID: T1027.013
- Reference URL: https://attack.mitre.org/techniques/T1027/013/
-
Tactic:
- Name: Collection
- ID: TA0009
- Reference URL: https://attack.mitre.org/tactics/TA0009/
-
Technique:
- Name: Data Staged
- ID: T1074
- Reference URL: https://attack.mitre.org/techniques/T1074/
-
Sub-technique:
- Name: Local Data Staging
- ID: T1074.001
- Reference URL: https://attack.mitre.org/techniques/T1074/001/