03.11.02E Threat Hunting

Statement

• Establish and maintain a cyber threat-hunting capability to:

  • Search for indicators of compromise in organizational systems and

  • Detect, track, and disrupt threats that evade existing safeguards.

• Employ the threat-hunting capability {{ insert: param, A.03.11.02E.ODP.01 }}.

Guidance

Threat hunting is an active means of cyber defense in contrast to traditional protection measures, such as firewalls, intrusion detection and prevention systems, quarantining malicious code in sandboxes, and Security Information and Event Management (SIEM) technologies and systems. Cyber threat hunting involves proactively searching organizational systems, networks, and infrastructure for advanced threats. The objective is to track and disrupt adversaries as early as possible in the attack sequence and to measurably improve the speed and accuracy of responses. Indications of compromise include unusual network traffic, unusual file changes, and the presence of malicious code. Threat-hunting teams leverage existing threat intelligence and may create new threat intelligence that is shared with peer organizations, Information Sharing and Analysis Organizations (ISAO), Information Sharing and Analysis Centers (ISAC), and relevant government departments and agencies. This requirement does not enhance a specific requirement in SP 800-171 but can be used to strengthen the protection of CUI associated with critical programs or high value assets.

Statement

• (includes expunge) Ensure that the threat event does not have an impact.

  • Reduce likelihood of occurrence and/or reduce likelihood of impact.

  • The adversary’s efforts or resources cannot be applied or are wasted.

• (includes shorten and reduce) Restrict the consequences of realized threat events by limiting the damage or effects they cause in terms of time, system resources, and/or mission or business impacts.

  • Reduce level of impact and reduce likelihood of impact of subsequent events in the same threat scenario.

  • The adversary’s effectiveness is restricted.

• (includes detect and scrutinize) Reduce risk due to ignorance of threat events and possible replicated or similar threat events in the same or similar environments.

  • Reduce likelihood of impact.

  • The adversary loses the advantage of stealth as defenders are better prepared by developing and sharing threat intelligence.

Assessment objective

a cyber threat-hunting capability is established to search for indicators of compromise in organizational systems.

Assessment objective

a cyber threat-hunting capability is maintained to search for indicators of compromise in organizational systems.

Assessment objective

a cyber threat-hunting capability is established to detect, track, and disrupt threats that evade existing safeguards.

Assessment objective

a cyber threat-hunting capability is maintained to detect, track, and disrupt threats that evade existing safeguards.

Assessment objective

the threat-hunting capability is employed {{ insert: param, A.03.11.02E.ODP.01 }}.

Assessment method

• Risk assessment policy assessment reports audit records and/or event logs threat-hunting capability system security plan other relevant documents or records

Assessment method

• Personnel with threat-hunting responsibilities system/network administrators personnel with information security responsibilities

Assessment method

• Processes for assessments and audits mechanisms or tools supporting and/or implementing threat-hunting capabilities

1. Übersicht

1.1 Referenzen

1.2 Identifizierte Anforderungen

1.3 Zugehörige Regulierungen

2. Identifizierte Anforderungen

3. Zugehörige Regulierungen

Verknüpfte Vorgänge

• NIST -

  https://csrc.nist.gov/pubs/sp/800/53/r5/upd1/final