Hunt for Threat Actor TTPs Across Endpoint Telemetry & Manage Vulnerability Lifecycle End-to-End
Defense contractors shift from reactive alerting and manual paperwork to proactive threat hunting and automated vulnerability tracking. This gives MSPs a high-value security offering that directly solves the strict continuous monitoring requirements for CMMC Level 2 and 3 compliance.
The problem today
40+
hours per month wasted on vulnerability paperwork
100%
reliance on reactive alerts that miss hidden threats
Marcus Ellerbee is the IT Security Manager for a 120-person defense contractor in Dayton, Ohio, holding a CMMC Level 2 assessment in five months with two analysts and no dedicated threat hunter. His specific nightmare is the POA&M — he knows it's incomplete, he knows an assessor is going to pull the remediation verification records, and he knows his team hasn't had time to close the loop on 34 open findings from the last scan cycle.
01The Problem
Half an analyst's capacity spent on spreadsheet upkeep — and DCMA audits that spreadsheet in 90 days.
Living-off-the-land techniques blend into endpoint noise for weeks without tripping a single SIEM rule.
Assessors distinguish reconstructed compliance histories from live programs — months of lifecycle data cannot live in email threads.
Splitting two analysts across scanning, remediation chasing, patch verification, and telemetry review guarantees one gets dropped.
A ticket marked closed while the vulnerability persists on the endpoint is the exact gap an assessor — or attacker — finds first.
Missing one active lateral movement sequence converts a two-hour containment into a mandatory DIBCAC breach notification.
02The Solution
Solution Brief
Fictional portrayal · illustrative
- Marcus runs security for 120-person CUI-handling contractor, two analysts
- POA&M carries 34 open findings, zero verified closures
- Unreviewed PowerShell execution sitting four days old on engineer's laptop
- Every hour spent on data entry is an hour not closing POA&M findings
- Assessors trained to spot compliance programs reconstructed pre-visit
- Undetected lateral movement triggers DIBCAC notification a two-person team cannot manage mid-breach
- Incomplete POA&M or unverified patch puts the contract vehicle at risk
- Vulnerability agent ingests scans, routes tickets, verifies patches, updates POA&M in real time
- Threat hunting agent maps endpoint telemetry to MITRE ATT&CK continuously — Thursday PowerShell flagged by Friday
- Analysts shift from data-entry to findings closure and hunting review
- CMMC assessment calendar creates hard urgency; embedded managed tier has near-zero churn
- Ongoing SOC augmentation and POA&M maintenance impossible to staff in-house at Marcus's scale
“I have two analysts and one of them basically works for the spreadsheet. Every Monday he's updating vulnerability status that the scanner already knows. Meanwhile I genuinely don't know if someone is moving laterally in our environment right now — I just know nothing has alerted. That's not a security program. That's hope.”
— Marcus Ellerbee is the IT Security Manager for a 120-person defense contractor in Dayton, Ohio, holding a CMMC Level 2 assessment in five months with two analysts and no dedicated threat hunter
03What the AI Actually Does
Continuous Threat Hunt Agent
Runs 24/7 across endpoint telemetry, mapping observed behaviors to MITRE ATT&CK tactics and techniques. Surfaces confirmed TTP matches to the ISSO or SOC with a full hunt report — before any alert fires.
Vulnerability Lifecycle Orchestrator
Takes a vulnerability from scan result to verified closure without analyst hand-holding — auto-triaging by severity and asset risk, routing remediation tasks, following up on overdue tickets, confirming patches applied, and keeping the POA&M current in real time.
POA&M Compliance Engine
Maintains a continuously accurate Plan of Action and Milestones record mapped to CMMC control requirements. Generates assessor-ready documentation at any point in the cycle — not just the week before an audit.
CMMC Control Coverage Monitor
Tracks which CMMC Level 2 and Level 3 practices are actively supported by operational evidence versus which have documentation gaps. Flags drift between what the SSP claims and what the endpoint data actually shows.
04Technology Stack
Defense contractors shift from reactive alerting and manual paperwork to proactive threat hunting and automated vulnerability tracking. This gives MSPs a high-value security offering that directly solves the strict continuous monitoring requirements for CMMC Level 2 and 3 compliance.
The Problem
- Analysts spend more time updating compliance spreadsheets than actually fixing vulnerabilities
- Security teams only react to alerts instead of actively hunting for hidden threats
- Failing to prove continuous monitoring puts lucrative defense contracts at immediate risk
Technology Stack
Microsoft Sentinel (Azure Government — FedRAMP High)
| Field | Value |
|---|---|
| Vendor | Microsoft Azure Government |
| License type | Consumption-based |
| Cost estimate | See UC-10. Hunting queries add minimal additional ingestion cost. |
Primary hunting platform. Sentinel's hunting dashboard provides a structured environment for hypothesis-driven hunts using KQL queries. Hunting bookmarks save interesting findings for analyst review. Live Stream enables real-time hunting query monitoring.
Microsoft Defender for Endpoint (GCC High)
| Field | Value |
|---|---|
| Vendor | Microsoft |
| License type | Included in M365 E5 GCC High |
| Cost estimate | ~$5.20/device/month standalone |
Primary endpoint telemetry source for threat hunting. Defender's Advanced Hunting (via Microsoft 365 Defender GCC High portal) provides 30-day rolling endpoint telemetry across all managed endpoints. Native connector to Sentinel streams all Defender telemetry for cross-source hunting.
Tenable.sc (Vulnerability Management)
| Field | Value |
|---|---|
| Vendor | Tenable |
| License type | Perpetual + annual maintenance |
| Cost estimate | See UC-13 |
Vulnerability scan engine and management platform. The vulnerability lifecycle agent uses Tenable.sc as the authoritative source for vulnerability data (CVE, CVSS, asset, plugin output). Tenable.sc API enables programmatic retrieval of scan results and verification of remediation.
Azure OpenAI (Azure Government)
| Field | Value |
|---|---|
| Vendor | Microsoft Azure Government |
| License type | Consumption-based |
| Cost estimate | Monthly hunt report: ~$5–$15. Vulnerability triage narrative: ~$1–$3 per CVE cluster. |
Generates hunt report narratives, vulnerability triage prioritization explanations, and remediation assignment communications. All processing within FedRAMP High boundary.
Microsoft Azure Logic Apps (Azure Government)
| Field | Value |
|---|---|
| Vendor | Microsoft Azure Government |
| License type | Consumption-based |
| Cost estimate | ~$0.000025/action |
Orchestrates the vulnerability lifecycle workflow: new CVE detected → triage → assign → track → verify → close. Runs on schedule (weekly full triage) and event-driven (new critical CVE detected → immediate triage).
Alternative Approaches
Palo Alto Cortex XSIAM (AI-Native SOC Platform)
Cortex XSIAM provides an AI-native SOC platform with built-in threat hunting, automated triage, and vulnerability management. FedRAMP High authorized. Best for: Large defense contractors or agencies wanting a single-vendor AI SOC platform. Tradeoffs: Enterprise pricing ($500K+/year); less customizable hunting hypotheses than the custom Sentinel approach.
CrowdStrike Falcon (Endpoint + Hunting + Vulnerability)
CrowdStrike Falcon provides EDR, managed threat hunting (Falcon OverWatch), and Spotlight (vulnerability management) in a single platform. FedRAMP High authorized. Best for: Organizations preferring a single EDR/hunting/vuln platform from one vendor. Tradeoffs: Higher per-endpoint cost than Microsoft Defender for Endpoint when already on M365 E5; hunting is managed by CrowdStrike analysts rather than autonomous.
Manual Hunting + Automated Vuln Lifecycle Only (Conservative)
For organizations not yet ready for autonomous threat hunting, deploy only the vulnerability lifecycle automation (scan → triage → assign → verify → close) and conduct manual monthly threat hunting sessions led by the ISSO using the KQL query library. Provides most of the CMMC compliance value at lower operational complexity. Best for: Smaller contractors (under 200 endpoints) where a full autonomous hunting agent is more infrastructure than the threat volume warrants.
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