huntrule

JVM Application Error Logs Indicating Potential JNDI Injection Exploitation

Alerts when JVM application error logs include JNDI/LDAP and Log4j JndiManager keyword indicators.

FreeReviewedSigma · High · v5
Product
jvm
Category
application
Author
Moti Harmats (SigmaHQ), DRL 1.1
Published
2023-02-11
Updated
2026-07-31
AnalysisDetection

ATT&CK techniques

Initial Access

  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. C2

  13. Exfiltration

  14. Impact

What it detects

This rule flags JVM-based applications emitting error-level log messages that contain strings associated with JNDI lookups over LDAP and Log4j JNDI handling (e.g., com.sun.jndi.ldap.* and org.apache.logging.log4j.core.net.JndiManager). Attackers can use JNDI injection to coerce the application into performing unintended remote lookups, often as part of broader exploitation attempts. The detection relies on collected application error logs and keyword matching for the presence of these JNDI-related indicators.

Reporting behind it

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JVM Application Error Logs Indicating Potential JNDI Injection Exploitation
Pivot detection · T1190 · 9 related

Changelog

v5
  1. v5
    Candidate ingested via manual entry.2026-07-31
  2. v4
    Candidate ingested via manual entry.2026-07-31
  3. v3
    Candidate ingested via manual entry.2026-07-31
  4. v2
    Candidate ingested via manual entry.2026-07-31
  5. v1
    No changelog recorded for this version.2026-07-30

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.