threat hunting & ti
354 TopicsGrowing our connector ecosystem with 500+ Microsoft Sentinel connectors
Connecting the modern security environment Having spent years working across Microsoft's cloud, AI, and customer-facing organizations. I have seen that technology delivers the greatest value when it works with the environments customers already operate. That's especially true in cybersecurity. Most organizations rely on a diverse mix of platforms, applications, and security solutions. Security teams need to bring signals from across that environment together so they can understand risk, investigate threats, and respond with confidence. As a Microsoft Security customer experience leader, one of my priorities is ensuring that we're helping connect these technologies and get more value from their existing investments. When security data remains fragmented across disconnected tools, teams can lose valuable context. When that data comes together, defenders gain a more complete view of their environment and can make faster, better-informed decisions. Expanding the connector ecosystem Microsoft recently announced the Integrated Security Operations Center (ISOC) in Microsoft Defender. ISOC brings together security signals, threat intelligence, AI, and protection capabilities into a unified experience. It gives humans defenders and AI agents shared context to reason across the environment, coordinate investigations, and strengthen protection. Today, we are expanding the connector ecosystem to more than 500 connectors that enable customers to bring data from Microsoft and diverse third-party sources into their security operations experience. By connecting more signals across the technology estate, organizations can build a more complete understanding of risk and uncover relationships that might otherwise remain fragmented across separate tools. Combined with Microsoft's threat intelligence, AI, and protection capabilities, those signals become actionable context that helps human defenders and AI agents make better decisions and coordinate protection at the speed of the threat. Growing through partnership The strength of this connector ecosystem reflects the work of Microsoft and our technology partners to support our shared customers. Together, we are helping organizations connect the technologies they rely on and bring more of their security data into a unified operational experience. Below we showcase just a portion of the many partners with solutions available in Microsoft Security Store today. We remain committed to expanding this ecosystem so customers can achieve can gain broader visibility and greater value from their security investments. How to Get Started For Customers If you are a Microsoft Sentinel or ISOC customer, or considering adopting it, we are committed that you have the security connectors and integrations you need to enable your use of the platform. If an integration with an independent software vendor, or ISV solution is not yet available, or you have an issue with a solution already published, we have a dedicated team that may be able to assist by working with ISVs to build new, or update existing, connectors. If you have such a need, submit a request here. For Software Companies If you are a software development partner, the Microsoft Sentinel Codeless Connector Framework, or CCF, provides a streamlined way to bring your product into the Microsoft Security ecosystem. Use our Sentinel connector builder agent now to turn your API documentation into a working connector in just minutes. Partners can also come to us directly for engineering guidance and support in getting a connector built or improved. Reach out to us via our intake form. Building a more connected foundation for security operations Our goal is simple: help customers protect their digital environments by giving human defenders and AI agents a more complete picture of risk. We'll continue investing in connectors, partnerships, and integrated security experiences to help customers defend their organizations with greater visibility, context, and confidence. Learn More Microsoft Sentinel What is Microsoft Sentinel Empower Real-Time Security with Microsoft Sentinel’s CCF Push Feature | Microsoft Community Hub Sentinel connector hands-on labs Building Microsoft Sentinel Connectors in Minutes with the Sentinel Connector Builder Agent Building a CCF Nested API Pull Connector: A Technical Lab Walkthrough Microsoft Sentinel features in public preview Accelerate connectors development using AI agent in Microsoft Sentinel | Microsoft Community Hub Extending Sentinel Data Integration: Azure Blob Storage Support for CCF Connectors | Microsoft Community Hub Public Preview: Nested API Support Comes to Microsoft Sentinel CCF | Microsoft Community Hub Public Preview: Multi-Account Support for Microsoft Sentinel Codeless Connectors | Microsoft Community Hub495Views0likes1CommentTurn threat intelligence into informed action with Microsoft Defender
Every new threat raises a familiar set of questions. Is it targeting our industry? Are we exposed? What should we investigate first? Answering those questions takes more than another feed or a longer list of indicators. It takes intelligence that brings the relevant context together and helps your team understand which threats matter to your organization and where to investigate next. With the new Threat Intelligence experience in Microsoft Defender, we're bringing Microsoft threat intelligence, third-party sources, and your team's own insights together around the way you work. Threat Intelligence Overview helps you prioritize the threats most relevant to your organization. Threat Intelligence Explorer gives analysts a centralized experience to search, filter, and investigate the intelligence behind them. Focus on the threats that matter to your organization A threat can be significant globally without being your team's most urgent concern. Your industry, the regions where you operate, and what's happening in your environment all shape what deserves attention. Threat Intelligence Overview puts that context at the center of your starting page. The personalized dashboard brings the external threat landscape together with insights about your organization, highlighting relevant threats, their impact, and your exposure. You can focus on industries and regions of interest, see threats actively affecting your organization, and identify where a closer investigation is needed. For an analyst planning the day's research or a security leader reviewing emerging risks, the starting point is the same: what matters to us right now? From there, you can move into Explorer to examine the intelligence behind a threat. Prioritize threats using a personalized view of the threat landscape, organizational impact, and exposure. Bring Microsoft, third-party, and your own intelligence into the same investigation A Microsoft report may explain how an actor operates. A third-party feed may identify infrastructure associated with that activity. Your own team may have intelligence from a previous investigation. Each contributes a different part of the picture. Threat Intelligence Explorer lets you work with those sources together. Microsoft Research articles and indicators sit alongside connected third-party feeds and intelligence curated by your organization. Start with what you know: an actor's name, a CVE, a domain, or an IP address. Free-text search finds matching intelligence across the types and sources available to your organization. Refine the results by type, industry, geography, or source, then follow relationships to understand how individual findings fit together. Threat Intelligence Explorer covers indicators, threat actors, campaigns, attack patterns, tools, vulnerabilities, and reports. You can move from understanding a threat to examining its associated intelligence, then continue from an indicator's details into the relevant Defender entity page for deeper investigation. Search across intelligence sources and follow relationships from a threat to the evidence you need to investigate. Follow a lead from relevance to investigation Suppose your team is researching Aqua Blizzard. The question is not simply what the actor does, but whether its activity should change your priorities. In Threat Intelligence Overview, you can review threats relevant to your industry and regions alongside available impact and exposure information. In Threat Intelligence Explorer, a search for the actor brings together matching intelligence from Microsoft, your connected feeds, and your organization's repository. From there, you can review a report, filter the results, and follow available relationships to associated intelligence. If an indicator warrants a closer look, continue into its Defender entity page to investigate further. As the picture becomes clearer, you can tag relevant records in your Threat Intelligence Platform and curate intelligence for the team. What began as a question about a threat actor becomes focused research, a deeper investigation where needed, and intelligence your colleagues can build on. Keep the intelligence you rely on Threat Intelligence Overview and Explorer replace the previous Threat Intelligence pages (Threat Analytics, Intel Management) with a personalized starting point and a shared investigation workspace. The Microsoft reports you rely on remain available in full detail (build on convergence of Microsoft Defender Threat Intelligence into Microsoft Sentinel and Defender XDR), and your existing intelligence carries over. The transition is designed to preserve existing threat intelligence capabilities, with the new experience bringing them together through Threat Intelligence Overview and Explorer. Customers with an eligible Microsoft Defender license can access the new experience. For details on eligible licenses, see Microsoft Defender XDR prerequisites. Learn more Explore threat intelligence with Intel Explorer Transition to the new Threat intelligence experience770Views0likes1CommentIntroducing the Microsoft Sentinel ASIM EmailEvent schema
Email remains one of the most common entry points for security threats. Yet email products often describe the same activity with different table names, fields, and values. This makes it harder to build detections and investigations that work consistently across data sources. The Microsoft Sentinel Advanced Security Information Model, or ASIM, EmailEvent schema is now available. It provides a common structure for email delivery and inspection events, helping customers and partners create security content that works across supported email data sources. A consistent view of email security activity EmailEvent standardizes the information analysts need to understand what happened to an email and why. It covers: Email delivery and inspection events Sender, source, and recipient information Message subject, size, direction, and delivery location URLs and file attachments SPF, DKIM, and DMARC authentication results Delivery actions such as delivered, blocked, quarantined, or deleted Threat, risk, confidence, tactic, technique, and remediation details Instead of learning a different data model for every product, analysts can query the normalized EmailEvent fields. Parser developers map each source's native data to the same schema. How it works Consider an email that contains a suspicious attachment. The email security product records the sender, recipients, attachment, authentication results, inspection verdict, and final action. A connector collects that event. A parser or Data Collection Rule maps the source fields to EmailEvent. Microsoft Sentinel can then query the normalized record using the same field names used for other supported email sources. This common structure separates security content from the details of a specific product. When another source adds an EmailEvent parser, existing source-independent queries and detections can work with that source without being rewritten around its native field names. Why it matters Simpler analytics: Write queries against one consistent set of email fields. Broader coverage: Apply source-independent security content across normalized email sources. Faster investigations: Compare delivery, authentication, attachment, URL, and threat details without translating different data models. Easier integration: Give connector and parser developers a defined contract for bringing new email telemetry into ASIM. EmailEvent does not replace the rich native data produced by email security products. It provides a consistent security layer that makes that data easier to use together. Build on EmailEvent The EmailEvent release includes the schema definition, source-independent parser framework, filtering parser, deployment templates, and validation support in the Azure-Sentinel repository. The schema version is 1.0.0. Customers can use normalized EmailEvent data to develop hunting queries, analytics rules, workbooks, and investigation experiences. Partners and community contributors can create source-specific parsers that map their email data to the schema. Get started Normalization Email Schema MS Learn Learn about normalization and ASIM Explore the EmailEvent implementation in Azure-Sentinel Deploy ASIM parsers Thank you to the ASIM engineering and partner teams who contributed to the schema, deployment path, validation, and release.831Views1like0CommentsFrom Domain Lists to Decisions: Scaling WHOIS Threat Intelligence with MDTI and Microsoft Graph
The real problem isn't WHOIS. It's what WHOIS costs you at scale. Ask any SOC analyst whether WHOIS data is useful and they'll say yes without hesitation. Registrant emails, creation dates, registrars, and nameservers are among the most durable pivots in domain-based threat intelligence — the threads that tie a single phishing domain back to an entire adversary campaign. Now ask them how often they actually pull WHOIS for every suspicious domain in an alert. The honest answer is: not always. And that gap is the real problem. Here's why. When a campaign surfaces two hundred lookalike domains, manual WHOIS becomes a losing game: It's slow. One-domain-at-a-time portal lookups don't finish before the incident clock runs out. It's inconsistent. Different analysts capture different fields, so the data can't be compared or correlated. It's un-auditable. Screenshots and copy-paste don't hold up in an investigation review months later. It loses the pattern. By the time you've checked twenty domains by hand, the shared registrant email that connected them has scrolled off the screen. The outcome of all this friction is the part that should worry a security leader: analysts quietly stop enriching, or enrich only a sample. The pivot that would have collapsed twenty alerts into one campaign never happens. The newly registered domain that should have been escalated gets triaged as routine. The intelligence exists — the process just can't reach it fast enough. The outcome we're actually after Reframe the goal. This isn't a project to "run WHOIS." It's a project to produce a specific set of outcomes: Every suspicious domain gets enriched — not a hand-picked sample. Enrichment is consistent and structured, so patterns across domains become visible instead of buried. The output is audit-ready — defensible in an investigation and reusable in a report. The whole thing is fast enough to happen inside the incident, not the day after. Get-MDTIWhois.ps1 exists to deliver exactly those outcomes. It reads a list of domains, calls Microsoft Defender Threat Intelligence (MDTI) through Microsoft Graph, and returns both a normalized CSV for immediate triage and the raw JSON for deep investigation — in one pass, read-only, with nothing changed in your environment. What changes for the analyst The clearest way to see the value is the before-and-after. Before: An alert fires on a suspected phishing campaign with two hundred candidate domains. The analyst opens a portal, checks a handful of domains, eyeballs a few registrant fields, and makes a judgment call on incomplete data. Correlation is mental and fragile. Twenty related alerts stay twenty separate alerts. After: The analyst drops the domains into a text file, runs one command, and gets a spreadsheet where all two hundred are enriched with the same fields. Sorting by registrant email instantly reveals that forty of them share one address, one budget registrar, and creation dates in the same week. Twenty alerts become one campaign. One judgment call becomes one defensible conclusion. That's the outcome: not "we ran WHOIS," but "we saw the campaign the manual process would have missed." Where the value shows up This translates into concrete wins across several SOC workflows: Faster campaign triage. Shared registrant emails and nameservers collapse dozens of alerts into a single adversary-infrastructure story — directly reducing mean-time-to-respond. Better newly-registered-domain hunting. Enrich domains from DNS or proxy logs, sort by registration date, and surface the freshly registered domains that are disproportionately malicious — before they're clicked. Enrichment that feeds the platform. The normalized CSV drops straight into a Sentinel watchlist, or the same Graph call can be wrapped in a Logic App / Azure Function playbook to auto-enrich domain entities the moment an incident is created. Reusable intelligence. Registrant and nameserver pivots become custom indicators and hunting queries — value that compounds over time instead of being thrown away after each investigation. Why this approach, specifically There are other ways to get WHOIS. A few reasons this approach earns its place in a modern, Defender-portal-centric SOC: It uses first-party intelligence. MDTI is Microsoft's own threat-intelligence graph, queried natively through Microsoft Graph — no third-party data broker, no separate contract, no data leaving your Microsoft trust boundary. It's read-only by design. The script cannot modify Sentinel, Defender, tenant settings, or domain records. Enrichment tooling should never be able to change the environment it observes — and this one can't. It's built to survive real-world APIs. Throttling (HTTP 429) and transient 5xx errors are retried with backoff; permanent misses (404) aren't retried needlessly; a single failed domain never aborts the run. You always get a complete, dependable result set. It handles secrets the way you'd want. Client secrets come from an environment variable or a secure prompt — never hard-coded, never committed to source control. The engineering exists to protect the outcome: a complete, consistent, trustworthy enrichment set every single time, even when the input list is messy or the API is having a bad day. The output is built for decisions, not just data Two files, two jobs: The normalized CSV is the decision surface. One row per domain, every registrant/registrar/date/nameserver field an analyst pivots on — sortable, filterable, watchlist-ready. This is where twenty alerts become one campaign. The raw JSON is the safety net. Full API fidelity per domain, preserved for the audit trail and for the registrar-specific edge cases the normalized view can't anticipate. Together they answer both questions a SOC actually asks: "What do I do right now?" (CSV) and "Can I stand behind it later?" (JSON). What it takes to get there The barrier to entry is low: An Entra ID app registration with the Graph application permission ThreatIntelligence.Read.All (admin-consented), on a tenant with MDTI API access. A text file of domains, one per line. One command: $env:MDTI_CLIENT_SECRET = "<client-secret>" .\Get-MDTIWhois.ps1 ` -TenantId "<tenant-id>" ` -ClientId "<client-id>" ` -InputTxt ".\domains.txt" Under the covers it authenticates with a client-credentials grant, normalizes and de-duplicates the input, calls GET /security/threatIntelligence/hosts/{domain}/whois per domain, and writes both outputs. Minutes of setup; a repeatable capability afterward. Use it responsibly The project is provided as-is, for educational and demonstration purposes, and is not intended for production use without independent review, validation, and monitoring. Keep in mind: A 404 means MDTI has no current WHOIS record for that host — not that the domain is safe. WHOIS fields vary by registrar — always retain the raw JSON for anything you'll act on. WHOIS can contain personal data — validate your storage and sharing obligations before distributing enrichment output. Never commit secrets — use the environment-variable or secure-prompt path. The bottom line The value here isn't that WHOIS is difficult. It's that the friction of doing WHOIS well, for everything, quietly erodes detection quality — analysts under time pressure enrich less, correlate by memory, and miss the campaign hiding in plain sight. Get-MDTIWhois.ps1 removes that friction. It turns a flat list of domains into structured, audit-ready intelligence in a single read-only pass, so the pivot that reveals the adversary's infrastructure actually happens — inside the incident, not after it. That's the outcome worth automating. Disclaimer This article and the referenced tooling are provided “as-is,” for educational and demonstration purposes only, without warranties of any kind, express or implied. They are not intended for production, safety-critical, or regulated use without independent review, testing, validation, and appropriate safeguards. The views expressed are the author’s own and do not necessarily represent those of any employer or of Microsoft. You are solely responsible for how you deploy, modify, or adapt this tooling, and for ensuring compliance with all applicable laws, regulations, licensing terms, privacy obligations, and organizational security policies. Source: MDTI-WHOIS in the Microsoft Security Operations Toolkit. Provided as-is for educational purposes; test in a controlled environment before production use.In Advanced Hunting "Include in query" generates incorrect KQL for nested JSON array fields
Hi, In Microsoft Defender Advanced Hunting, using the right-click "Include in query" option on a nested value inside SigninLogs.AuthenticationDetails generates incorrect KQL. Example data structure: [ { "authenticationMethod": "Previously satisfied" } ] When I right-click the authenticationMethod value, Defender generates: | where parse_json(AuthenticationDetails)["0.authenticationMethod"] == "Previously satisfied" This returns no results. The correct KQL is: | where tostring(parse_json(AuthenticationDetails)[0].authenticationMethod) == "Previously satisfied" or: | where tostring(parse_json(AuthenticationDetails)[0]["authenticationMethod"]) == "Previously satisfied" The generated syntax appears to treat "0.authenticationMethod" as one JSON property name instead of navigating to array element [0] and then accessing the authenticationMethod property. I have also observed that Microsoft Sentinel generates the expected syntax for the same type of nested field, while the Microsoft Defender portal generates the incorrect form. This is reproducible with SigninLogs.AuthenticationDetails, which is stored as a string containing a JSON array. Expected behavior: parse_json(AuthenticationDetails)[0].authenticationMethod Actual behavior: parse_json(AuthenticationDetails)["0.authenticationMethod"] Plase confirm whether this is a known issue with the Advanced Hunting result / Inspect Record / Include in query functionality.125Views0likes0CommentsRESYNC MICROSOFT DEFENDER FOR ENDPOINT
hey guys im a junior IT officer and i have been tasked with finding a way to get microsoft defender for enpoint to get fresh data without waiting 24hrs or the 4 hours that microsoft insists the resync will happen,I tried advanced hunting running queries directly there,i tried runnning an anti virus scan but nothing happened and APIs i tried looking for APIs that can initiate a restart but nothing...any ideas ? i read on here there was github repo for using powerBI with defender to get new data https://github.com/microsoft/MicrosoftDefenderForEndpoint-PowerBI but its not clear how that work...any intel would be helpful360Views0likes1CommentSentinel - Defender XDR KQL Queries Library
Hello all, I’ve been building something over the past few weeks that I think the security community might find useful. https://goxdr.fyi is a searchable KQL query library for Microsoft Sentinel and Defender XDR. The name comes from a nickname my colleagues gave me (GoX) combined with XDR. I also picked up https://goxdr.fyi as a short and easy to remember domain for it. You can check it out here: https://goxdr.fyi The idea came from my own day to day work as someone working in IAM and SOC operations. I constantly find myself writing and refining KQL queries for threat hunting, detection engineering and incident investigation. Over time I realized I had a growing collection of queries that I kept going back to and I thought why not make these available to others? It currently has 117 queries covering identity security, BEC/AiTM detection, NTLM and LDAP attack hunting, OAuth governance, AI/Copilot security, Sentinel alert trending, SOC performance metrics and more. Some of these queries are ones I wrote from scratch based on real scenarios I encountered in production environments. Others are community queries I tested and validated in my own setup. Only the ones I found genuinely useful and that actually worked against real data made it in. Each query comes with a description explaining what it detects and why it matters, along with severity levels, platform tags (Sentinel, XDR or both) and a copy button so you can paste it directly into Advanced Hunting or use it as the basis for an Analytics Rule. The site is open source, hosted on GitHub Pages and licensed under CC BY 4.0. No sign-up, no paywall, no tracking. The source is available. I’ll keep adding queries as new scenarios come up. If there’s enough interest I’m also considering adding Cortex XQL queries for Palo Alto environments. Suggestions, feedback or ideas for new detections are always welcome. Feel free to reach out. Thanks362Views0likes0CommentsSmartScreen reputation issue for EV Code Signed Windows application
Hello Microsoft Defender Threat Intelligence Team, We are the developer of a legitimate Windows desktop application called "ShangJing". Recently, our users reported that Microsoft Defender SmartScreen displays the following warning when downloading and launching our application: "Microsoft Defender SmartScreen can't verify this file is safe." The application is not malicious and has been digitally signed with a GlobalSign EV Code Signing Certificate. Application information: Product Name: ShangJing Publisher: Zhaoyi Information Technology (Shanghai) Co., Ltd. Certificate: GlobalSign EV Code Signing Certificate File: 尚镜_2.0.0_platinum_setup.exe Issue: Users receive SmartScreen reputation warning when downloading our application. We have already submitted the file through Microsoft Security Intelligence submission portal 7 days ago, but we have not received any update yet. Submission ID: 0c015296-b9cf-4130-9eaf-fc59cd145370 The file is distributed through our official website: https://www.changine.cn/downloads We would like to understand: 1. Is this caused by insufficient SmartScreen reputation for a newly released binary? 2. Is there any additional verification required from the software publisher side? 3. How can we ensure our legitimate application gains proper SmartScreen reputation? Our application is widely used for live streaming and camera-related workflows. It does not contain any malicious behavior. We would appreciate any guidance from the Microsoft team. Thank you.515Views1like3CommentsNeed information on generating sample events for Threat Intelligence" (both duplicate posts)
Two things are tripping this up, and they're common mix-ups: First — Attack Simulation Training doesn't generate Threat Intelligence events. If you used the built-in phishing simulator, its logs only show up under Email & collaboration → Attack simulation training → Simulations — they're intentionally excluded from real Threat Intelligence telemetry. That's likely why nothing's showing up even though you ran a campaign. Second — your EICAR test should actually work, but check the right place: not the generic Office 365 Management Activity API's AuditLogRecordType page in isolation — go specifically to the RecordType values used for Defender for Office 365 threat events: 28 = ThreatIntelligence (phishing/malware events) 41 = ThreatIntelligenceUrl (Safe Links time-of-click/block events) Plus ThreatIntelligenceAtpContent, ThreatFinder, MSTIC To reliably generate one: Confirm Purview audit logging is enabled for the tenant first — if it isn't, nothing downstream gets logged regardless of what you trigger. From an external mailbox, send a test user the EICAR string as a .txt attachment (exact 68-byte string, see Microsoft's anti-malware testing doc). Defender for Office 365 should detect and quarantine it. Verify it landed first in the portal UI: Email & collaboration → Explorer → Malware tab — if it's there, the underlying ThreatIntelligence record exists and the Management API call should return it (allow a short delay; these aren't instant). For the Safe Links side, send a known-safe-but-flagged test URL (Microsoft publishes test URLs for this) to trigger ThreatIntelligenceUrl. If it shows up in Explorer but still doesn't appear via the Management API, that's usually an API subscription/permission issue (you need an active subscription to the DLP.All or relevant Office 365 Management API content type, not just Graph permissions) — worth checking separately from the detection side.255Views0likes0CommentsCan the Microsoft Defender portal show the server details as per security group?
Yes — this is exactly what Device Groups + RBAC are designed for in Microsoft Defender (assuming you're managing these servers through Defender for Endpoint, which is the typical path for cross-vendor server monitoring). The model: Device groups are the scoping unit (not Entra security groups directly) — create one per vendor/company (e.g., "Company A Servers", "Company B Servers"), using a matching rule (tag, OS, name pattern, etc.) to auto-assign devices. RBAC roles then get tied to an Entra security group and granted access to only specific device groups. So: Company A's people go in an Entra group → that group is assigned an MDE role scoped to "Company A Servers" only → they only ever see those devices, alerts, and incidents in the portal. You as admin keep your existing Global Admin/Security Admin role (or get added to both device groups' RBAC scope), so you retain visibility across both. Path: Settings → Endpoints → Permissions → Device groups to create the groups, then Permissions → Roles to create a role and tie it to your Entra security group with that device group as the scope. One thing to verify before committing to this design: this RBAC model affects what shows in alerts, incidents, advanced hunting (scoped automatically), and inventory — but make sure nobody from Company A/B also needs organization-wide Defender features like global threat analytics, since those aren't scopable the same way. If you're actually talking about servers monitored via Defender for Cloud (Azure subscription-based, not MDE-onboarded), the equivalent mechanism is Azure RBAC at the subscription/resource group level (assign Security Reader scoped to the RG containing Company A's VMs) — different mechanism, same outcome. Worth clarifying which portal/product this is so the right one gets recommended.264Views0likes0Comments