Suspicious JAR Child Process

Identifies suspicious child processes of a Java Archive (JAR) file. JAR files may be used to deliver malware in order to evade detection.

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

Tags:

Elastic
Host
Linux
macOS
Threat Detection
Execution

Version: 2 (version history)

Added (Elastic Stack release): 7.12.0

Last modified (Elastic Stack release): 7.15.0

Rule authors: Elastic

Rule license: Elastic License v2

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") 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/*")

Threat mapping

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Framework: MITRE ATT&CK^TM

Tactic:
- Name: Execution
- ID: TA0002
- Reference URL: https://attack.mitre.org/tactics/TA0002/
Technique:
- Name: Command and Scripting Interpreter
- ID: T1059
- Reference URL: https://attack.mitre.org/techniques/T1059/

Rule version history

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Version 2 (7.15.0 release)

Formatting only

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