AN2039: Analytic 2039
Detects exploitation attempts against security daemons or kernel security modules followed by daemon termination, disabled logging, module unload, audit stoppage, or reduced endpoint telemetry. Correlates local execution or network input with control degradation.
Analyst context for executives and security teams
AN2039 is a Linux-focused detection analytic for situations where an attempted exploit against security components is followed by a drop in defensive visibility, such as a security daemon stopping, logging being disabled, a security module being unloaded, audit collection stopping, or endpoint telemetry being reduced. Its business value is not just finding an exploit attempt; it helps identify when the controls leaders rely on for investigation, compliance evidence, and incident containment may have been degraded at the same time.
Executive priority
Treat this as a resilience and assurance analytic. If Linux security tooling, audit logs, or kernel security modules can be disabled without rapid investigation, the organization may lose evidence needed for incident response, regulatory support, and confident containment decisions. Leaders should ask whether critical Linux systems generate independent evidence when local security controls fail, and whether SOC playbooks distinguish routine service failures from suspicious control degradation following local execution or network input.
Technical view
For SOC and detection engineering teams, validate correlation across Linux events showing local execution or network input followed by degradation of security controls. The ATT&CK object specifically points to security daemon termination, disabled logging, module unload, audit stoppage, or reduced endpoint telemetry. Because no official detection logic is provided, teams should implement this as a behavior correlation rather than a single indicator. Prioritize high-value Linux servers, systems running security daemons, and hosts where audit or endpoint telemetry is required for investigations.
Likely telemetry
- Linux process execution and service lifecycle events for security daemons
- System logs showing daemon termination, restart, failure, or abnormal exit
- Audit subsystem status and audit stoppage events
- Kernel module load/unload telemetry where available
- Endpoint security or EDR health and telemetry status events
Detection direction
- Correlate suspected local execution or network input with near-term degradation of Linux security controls instead of alerting only on service stop events.
- Tune for security-relevant daemons, kernel security modules, audit services, and endpoint telemetry components used in the local environment.
- Account for false positives from patching, maintenance windows, controlled agent upgrades, kernel updates, and administrator troubleshooting.
- Look for multiple degradation signals together, such as audit stoppage plus daemon termination or module unload plus reduced endpoint telemetry.
- Validate whether telemetry loss itself is observable from an independent source, because host-local logging may be unavailable after degradation.
Mitigation priorities
- Establish baselines for expected Linux security daemon, audit, logging, and endpoint telemetry states on critical systems.
- Protect and monitor security service configuration, audit configuration, and kernel module management paths according to existing hardening standards.
- Ensure SOC visibility includes control-health monitoring, not only threat-event monitoring.
- Use change management signals to suppress known maintenance while preserving alerts for unexpected degradation.
- Create incident response procedures for rapid triage when control degradation follows execution or network activity.
Analyst notes and limits
This object is a detection analytic, not a technique description. The official description is useful but high level: it defines a Linux correlation pattern involving possible exploitation attempts and subsequent defensive control degradation. No tactics, relationships, aliases, labels, or official detection logic were supplied, so implementation must be adapted to the organization’s Linux services, audit configuration, EDR or logging stack, and change-management context.
The source provides no detection query, no ATT&CK tactic mapping, no related techniques, and no relationship context. It supports Linux only. This summary should not be read as evidence of active exploitation, attribution, impact, or guaranteed detection coverage.
Analytic 2039
Detects exploitation attempts against security daemons or kernel security modules followed by daemon termination, disabled logging, module unload, audit stoppage, or reduced endpoint telemetry. Correlates local execution or network input with control degradation.
How security teams should use this page
Treat this object as behavior context, not an attribution claim. Validate the related groups, software, data sources, and mitigations against official ATT&CK relationships and your own telemetry before making control-coverage decisions.
All related ATT&CK context
No relationships are available in the current normalized data for this object.
Object version and sync metadata
The fields below describe the current mirrored snapshot. When Glexia retains multiple ATT&CK source imports, you can open the table to compare the same object across releases (hashes and MITRE timestamps). For MITRE’s own release notes and roadmap, see ATT&CK resources — Updates .
Imported snapshots across ATT&CK releases (1)
| Release | Bundle imported | Object version | Modified | Status | Raw hash |
|---|---|---|---|---|---|
| 19.1 | 1.0 | Current bundle | 6f2d498d925e… |
Mirrored ATT&CK source object
The raw object is retained through the mirrored ATT&CK source bundle and object hash. The raw endpoint returns the exact object from the mirrored bundle when available.
External references and citations
MITRE external references are preserved separately from Glexia analysis so citations remain traceable to their original source records.
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mitre-attack AN2039Open source URL
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