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IR-4(13) IR · Incident Response

Behavior Analysis

LOW MODERATE HIGH
1 Overlay 0 Related Controls
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Requirements NIST SOURCE

Analyze anomalous or suspected adversarial behavior in or related to [environments or resources].

Discussion (NIST Supplemental Guidance)

If the organization maintains a deception environment, an analysis of behaviors in that environment, including resources targeted by the adversary and timing of the incident or event, can provide insight into adversarial tactics, techniques, and procedures. External to a deception environment, the analysis of anomalous adversarial behavior (e.g., changes in system performance or usage patterns) or suspected behavior (e.g., changes in searches for the location of specific resources) can give the organization such insight.

Implementation Guidance

Engineering Interpretation

Original engineering commentary written for this explorer — not NIST source text and not authoritative guidance.

No engineering interpretation has been authored for IR-4(13) yet. This section is architected to receive it — see the Requirements and Assessment sections above for the authoritative NIST source content in the meantime.

Assessment

NIST SP 800-53A REV 5.2.0

Assessment Objectives

  1. environments or resources which may contain or may be related to anomalous or suspected adversarial behavior are defined;
  2. anomalous or suspected adversarial behavior in or related to <IR-04(13)_ODP environments or resources> are analyzed.

Examine

[SELECT FROM: Incident response policy; procedures addressing system monitoring tools and techniques; incident response plan; system monitoring logs or records; system monitoring tools and techniques documentation; system configuration settings and associated documentation; security plan; system component inventory; network diagram; system protocols documentation; list of acceptable thresholds for false positives and false negatives; system security plan; other relevant documents or records].

Interview

[SELECT FROM: Organizational personnel with information security responsibilities; system/network administrators].

Test

[SELECT FROM: Organizational processes for detecting anomalous behavior].

Overlays

Showing the OT/ICS overlay for the parent control IR-4 — see the IR-4(13) entries within each baseline below.

OT/ICS Overlay SP 800-82r3

NIST SP 800-82r3 Appendix F, Table 22. Blank baseline means the control/control enhancement is not selected in that initial OT baseline.

LOW

  • Base control: Included (matches standard baseline)

MODERATE

  • Base control: Included (matches standard baseline)
  • Included: (1)

HIGH

  • Base control: Included (matches standard baseline)
  • Included: (1) (4) (11)

STIGs & CCIs

No STIG checks or CCI mappings are currently loaded for IR-4(13). This section is architected to display, per product: STIG ID, Finding ID, Severity, Title, Description, Check, Fix, CCI, and NIST control mapping — but nothing is populated here until a real DISA STIG/CCI dataset is ingested.

Learn more about STIG/CCI integration →

Evidence

Potential Evidence — Derived

Categorized from the SP 800-53A "Examine"/"Test" artifact list above by keyword — not an authoritative NIST evidence list.

Policy

  • Incident response policy
  • incident response plan
  • security plan
  • system security plan

Configuration

  • system configuration settings and associated documentation
  • system component inventory

Testing

  • Organizational processes for detecting anomalous behavior

Other Records

  • procedures addressing system monitoring tools and techniques
  • system monitoring logs or records
  • system monitoring tools and techniques documentation
  • network diagram
  • system protocols documentation
  • list of acceptable thresholds for false positives and false negatives
  • other relevant documents or records