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Elastic Docs ›Elastic Security Solution [8.2] ›Detections and alerts ›Prebuilt rule reference

Suspicious JAVA Child Process

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IMPORTANT: This documentation is no longer updated. Refer to Elastic's version policy and the latest documentation.

Suspicious JAVA Child Process

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Identifies suspicious child processes of the Java interpreter process. This may indicate an attempt to execute a malicious JAR file or an exploitation attempt via a JAVA specific vulnerability.

Rule type: eql

Rule indices:

  • auditbeat-*
  • logs-endpoint.events.*

Severity: medium

Risk score: 47

Runs every: 5 minutes

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Elastic
  • Host
  • Linux
  • macOS
  • Threat Detection
  • Execution

Version: 4 (version history)

Added (Elastic Stack release): 7.12.0

Last modified (Elastic Stack release): 8.2.0

Rule authors: Elastic

Rule license: Elastic License v2

Investigation guide

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## Config

If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.

Rule query

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process where event.type in ("start", "process_started") and
process.parent.name : "java" and process.name : ("sh", "bash",
"dash", "ksh", "tcsh", "zsh", "curl", "wget")

Threat mapping

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Framework: MITRE ATT&CKTM

Rule version history

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Version 4 (8.2.0 release)
  • Formatting only
Version 3 (8.0.0 release)
  • Rule name changed from: Suspicious JAR Child Process

  • Updated query, changed from:

    process where event.type in ("start", "process_started") and
process.parent.name : "java" and process.name : ("sh", "bash",
"dash", "ksh", "tcsh", "zsh", "curl", "wget") and process.args :
"-jar" and process.args : "*.jar" and /* Add any FP's here */ not
process.executable : ("/Users/*/.sdkman/*",
"/Library/Java/JavaVirtualMachines/*") and not process.args :
("/usr/local/*", "/Users/*/github.com/*", "/Users/*/src/*")
Version 2 (7.15.0 release)
  • Formatting only
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