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Potential JAVA/JNDI Exploitation Attempt
editPotential JAVA/JNDI Exploitation Attempt
editIdentifies an outbound network connection by JAVA to LDAP, RMI or DNS standard ports followed by a suspicious JAVA child processes. This may indicate an attempt to exploit a JAVA/NDI (Java Naming and Directory Interface) injection vulnerability.
Rule type: eql
Rule indices:
- auditbeat-*
- logs-endpoint.events.*
Severity: high
Risk score: 73
Runs every: 5 minutes
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
- https://www.lunasec.io/docs/blog/log4j-zero-day/
- https://github.com/christophetd/log4shell-vulnerable-app
- https://www.blackhat.com/docs/us-16/materials/us-16-Munoz-A-Journey-From-JNDI-LDAP-Manipulation-To-RCE.pdf
- https://www.elastic.co/security-labs/detecting-log4j2-with-elastic-security
- https://www.elastic.co/security-labs/analysis-of-log4shell-cve-2021-45046
Tags:
- Elastic
- Host
- Linux
- macOS
- Threat Detection
- Execution
Version: 101 (version history)
Added (Elastic Stack release): 8.1.0
Last modified (Elastic Stack release): 8.6.0
Rule authors: Elastic
Rule license: Elastic License v2
Rule query
editsequence by host.id with maxspan=1m [network where event.action ==
"connection_attempted" and process.name : "java" and /*
outbound connection attempt to LDAP, RMI or DNS standard ports
by JAVA process */ destination.port in (1389, 389, 1099, 53,
5353)] by process.pid [process where event.type == "start" and /*
Suspicious JAVA child process */ process.parent.name : "java" and
process.name : ("sh", "bash",
"dash", "ksh", "tcsh",
"zsh", "curl", "perl*",
"python*", "ruby*", "php*",
"wget")] by process.parent.pid
Threat mapping
editFramework: MITRE ATT&CKTM
-
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
edit- Version 101 (8.6.0 release)
-
- Formatting only
- Version 100 (8.5.0 release)
-
- Formatting only
- Version 3 (8.4.0 release)
-
- Formatting only
- Version 2 (8.2.0 release)
-
- Formatting only