Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects API requests to the Microsoft Graph search/query endpoint. This endpoint can be used by adversaries to enumerate items such as SharePoint site URLs, which is a common technique used by tools like GraphRunner's Get-SharePointSiteURLs function. The detection specifically looks for successful POST requests to 'https://graph.microsoft.com/v1.0/search/query'.
This rule identifies API requests made to the Microsoft Graph API to access user mailboxes and retrieve a specified number of messages. It specifically looks for GET requests to the `/v1.0/users/*/mailFolders/*/messages?$top=` endpoint with a successful HTTP 200 response. This activity could indicate an attacker attempting to exfiltrate emails from a compromised mailbox.
Detects when a user downloads a high number of non-public GitHub repositories. An adversary may attempt to steal the contents of several GitHub repositories after compromising a user account.
Yara rule that detects MiyaRAT backdoor.
This detects when a 401 Unauthorized status is received on multiple attempts of the same file when attempting to download from OneDrive and may indicate a permissions issue for the user.
This detects when a 401 Unauthorized status code is returned when attempting to download multiple unique files from OneDrive and may indicate a permissions issue for the user.
Identify when mailboxes are being accessed with requests for N number of messages
Detect mail items accessed via API through an unapproved Entra ID application.
Detects instances where an attacker attempts to interact with or exploit a REDIS service running on an OpenCanary honeypot. This indicates reconnaissance or an attempt to gain unauthorized access or extract data from the emulated Redis service.
This rule detects when a Git clone request is made to a Git service running on an OpenCanary honeypot. This indicates an adversary is interacting with the honeypot, likely attempting to collect information or test access.
This rule detects when an SNMP OID request is made to an OpenCanary honeypot's SNMP service. This indicates an adversary is likely performing reconnaissance to gather information about the network or devices, potentially looking for vulnerabilities or sensitive data.
Detects instances where an SMB service on an OpenCanary honeypot node has received a file open request. This indicates an adversary is interacting with the honeypot's SMB share, potentially attempting to discover or access files.
This rule identifies when a Google Workspace user transfers the ownership of a file within Google Drive. This activity is logged as a 'CREATE_DATA_TRANSFER_REQUEST' event in the Google Workspace admin logs, specifically categorized under 'USER_SETTINGS'. This could indicate an attempt to move sensitive data to a different account, potentially for exfiltration or to obscure ownership.
This rule detects when a Google Cloud Storage bucket's access policy is modified to allow public access. This occurs when 'allUsers' or 'allAuthenticatedUsers' are added to the bucket's permissions, granting broad access to its contents. Such a configuration can lead to unintended data exposure and is a significant security risk.
Detects instances where a REDIS service on an OpenCanary node has had an action command attempted.
Detects instances where an MSSQL service on an OpenCanary node has had a login attempt using SQLAuth.
Detects instances where an MSSQL service on an OpenCanary node has had a login attempt using Windows Authentication.
Detects instances where an SMB service on an OpenCanary node has had a file open request.
Detects instances where a GIT service on an OpenCanary node has had Git Clone request.
Detects instances where a MySQL service on an OpenCanary node has had a login attempt.
Detects instances where an SIP service on an OpenCanary node has had a SIP request.
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