Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
696 detections
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'Looks for new device registrations following a risky user account sign-in. By default the
query will use a 6 hour lookback period, this can be configured within the query.'
query will use a 6 hour lookback period, this can be configured within the query.'
Detects potential psexec command that initiate execution on a remote systems via common commandline flags used by the utility
Detects file creation patterns noticeable during the exploitation of CVE-2021-40444
Detects suspicious renamed SysInternals DebugView execution
Detects suspicious ways to download files from Microsoft domains that are used to store attachments in Emails or OneNote documents
Detects potential psexec command that initiate execution on a remote systems via common commandline flags used by the utility
Detects the creation of WebDAV temporary files with potentially suspicious extensions
'This rule identifies a web request with a user agent header known to belong to a hacking tool. This indicates a hacking tool is used on the host.<br>You can add custom hacking tool indicating User-Agent headers using a watchlist, for more information refer to the [UnusualUserAgents Watchlist](https://aka.ms/ASimUnusualUserAgentsWatchlist).
This analytic rule uses [ASIM](https://aka.ms/AboutASIM) and supports any built-in or custom source that supports the ASIM WebSession schema (ASIM WebSession Schema)'
This analytic rule uses [ASIM](https://aka.ms/AboutASIM) and supports any built-in or custom source that supports the ASIM WebSession schema (ASIM WebSession Schema)'
'This query examines Microsoft Entra ID sign-ins for each application and identifies the most anomalous change in a user's location profile. The goal is to detect user account compromise, possibly via a specific application vector.'
'This hunting query will try to identify the user account used to perform a file upload to blob storage.
This query can be used to match all file upload events, or filtering can be applied on filename to search for a specific upload.'
This query can be used to match all file upload events, or filtering can be applied on filename to search for a specific upload.'
'This query combines different Storage alerts with CommonSecurityLogs and StorageLogs helping analysts triage and investigate any
possible Storage related attacks faster thus reducing Mean Time To Respond'
possible Storage related attacks faster thus reducing Mean Time To Respond'
Detects suspicious ways to download files from Microsoft domains that are used to store attachments in Emails or OneNote documents
In this query, we are looking for emails containing malware accessed on a unmanaged device
'This query examines Microsoft Entra ID sign-ins and identifies anomalous changes in a user's location profile. A variation joins results back onto the original sign-in data to review the location set with each identified user in tabular form.'
This query helps hunting for Inbox rule changes which forward-redirect email
'This query combines different Storage alerts with CommonSecurityLogs and AuditLogs helping analysts investigate any possible storage related attacks faster
thus reducing Mean Time To Respond'
thus reducing Mean Time To Respond'
'Query for new sign-ins from stale/inactive accounts. UEBA filters based on ActivityInsights. Results for accounts created in the last 7 days are filtered out.'
This query looks for users performing file deletion activities. Spikes in file deletion observed from risky sign-in sessions are flagged here.
This applies to SharePoint and OneDrive users.
Audit event and Cloud application identifier references.
Reference - https://learn.microsoft.com/microsoft-365/compliance/audit-log-activities?view=o365-worldwide
Reference - https://learn.microsoft.com/azure/sentinel/entities-reference#cloud-application-identifiers
This applies to SharePoint and OneDrive users.
Audit event and Cloud application identifier references.
Reference - https://learn.microsoft.com/microsoft-365/compliance/audit-log-activities?view=o365-worldwide
Reference - https://learn.microsoft.com/azure/sentinel/entities-reference#cloud-application-identifiers
'Finds instances where a file uploaded to blob or file storage and it is seen on an endpoint by Microsoft Defender XDR.'
Use this query to review OAuth applications whose behaviour has changed as compared to a prior baseline period. The following query returns OAuth Applications accessing user mail via Graph that did not do so in the preceding week.
Detects Formbook like process executions that inject code into a set of files in the System32 folder, which executes a special command command line to delete the dropper from the AppData Temp folder. We avoid false positives by excluding all parent process with command line parameters.
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