Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects changes to the device registration policy within Azure. Such modifications can be used by adversaries to evade defenses, escalate privileges, or enable unauthorized device registrations, potentially leading to broader access to the environment. The detection specifically looks for 'Set device registration policies' activity within the 'Policy' category of Azure Audit Logs.
Identifies when a network security configuration in Azure is modified or deleted. This could indicate an adversary attempting to bypass security controls, establish persistence, or impact the availability of resources.
Detects when an attacker calls the "ALTER SERVER AUDIT" or "DROP SERVER AUDIT" transaction in order to delete or disable audit logs on the server. This action is a strong indicator of an adversary attempting to evade detection by tampering with logging mechanisms.
Detects reconnaissance activity involving attempts to enumerate domain administrator accounts and domain groups. Specifically, it looks for Event ID 4661 (An operation was performed on an object) with an AccessMask of '0x2d' (which indicates a read access attempt) on SAM_USER or SAM_GROUP objects whose ObjectName corresponds to well-known SIDs for the built-in Administrator account (-500) or Domain Admins group (-512) within a domain (S-1-5-21- prefix). This activity is often associated with adversaries using commands like 'net user administrator /domain' or 'net group domain admins /domain' to discover privileged accounts.
Detects suspicious WMI event filter and command line event consumer based on WMI and Security Logs. This rule specifically looks for Event ID 4662, indicating an operation on an object, where the ObjectType is 'WMI Namespace' and the ObjectName contains 'subscription'. This combination is indicative of WMI persistence mechanisms being created or modified.
This rule identifies when a device or device configuration is modified or deleted within Azure. This activity is logged in Azure Activity Logs and can indicate administrative changes, potential misconfigurations, or malicious activity aimed at impacting the availability or integrity of cloud resources.
Detects when multi-factor authentication (MFA) is disabled in Google Workspace. This could indicate an adversary attempting to weaken security controls for persistent access or to facilitate further compromise.
Detects when an attacker attempts to establish persistence or escalate privileges on an MSSQL server by adding a new or existing account to the 'sysadmin' fixed server role. This action grants the account full administrative control over the SQL Server instance.
Detects attempts to export an Exchange mailbox to an unusual file path, specifically to a network share or a file with an .aspx extension, which could indicate an adversary attempting to place a webshell. It also detects the assignment of the 'Mailbox Import Export' role to a user, a prerequisite for performing mailbox exports.
Identifies when an Azure Application Security Group is modified or deleted. This could indicate an attempt to alter network access controls, potentially to bypass security measures or disrupt services.
This rule detects when a user or entity makes changes to Amazon S3 bucket data management configurations. This includes modifications to logging, website hosting, encryption, lifecycle policies, replication configurations, and object restoration. Such changes could indicate an attempt to tamper with data integrity, availability, or exfiltration mechanisms within S3.
This rule identifies when an application is deleted in Azure. This could indicate an attempt by an adversary to remove traces of their activity, disrupt services, or impact the availability of applications.
This rule identifies when a new Azure Cloud Shell instance is created within the Azure portal. Cloud Shell provides a browser-based shell experience for managing Azure resources, and its creation could indicate administrative activity, or potentially, an attacker establishing a persistent command-line environment within a compromised Azure subscription.
This rule detects the installation of an Exchange Transport Agent. Transport agents are .NET assemblies that can operate on email messages passing through the Exchange transport pipeline. Adversaries may abuse this functionality to establish persistence, intercept emails, or exfiltrate data.
This detection uses Azure Activity logs (Administrative category) to identify the deletion of an Azure AD Hybrid Health AD FS service instance in a tenant. A threat actor can create a new AD Health ADFS service and create a fake server to spoof AD FS signing logs. The health AD FS service can then be deleted after it is no longer needed via HTTP requests to Azure.
This rule identifies when an Azure DNS zone is either modified or deleted. This activity is detected by monitoring Azure Activity Logs for operations starting with 'MICROSOFT.NETWORK/DNSZONES' and ending with '/WRITE' (for modifications) or '/DELETE' (for deletions). Such changes can indicate malicious activity aimed at redirecting traffic or disrupting services.
Detects when events are deleted in Azure Kubernetes. An adversary may delete events in Azure Kubernetes in an attempt to evade detection by removing forensic evidence.
Identifies when an Azure Firewall Rule Configuration is modified or deleted. This activity can indicate an adversary attempting to bypass network defenses or disrupt services.
This rule identifies when Kubernetes secrets are modified or deleted within a Google Cloud Platform (GCP) environment. It specifically looks for audit log entries related to the creation, update, patch, or deletion of Kubernetes secrets.
Detects when a firewall rule is modified, deleted, or inserted in Google Cloud Platform (GCP). This activity can indicate an adversary attempting to impair defenses or establish persistence by altering network access controls.
This rule detects commands commonly used on Cisco network devices to collect configuration data, which may contain sensitive information such as credentials. The commands include 'show running-config' to display the current operational configuration, 'show startup-config' to display the configuration loaded at boot, and 'show archive config' which can show archived configurations. An adversary might use these commands to gather information about the network, discover credentials, or understand the device's security posture.
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