Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects repeated successful operations related to public access or firewall configuration changes within Azure Activity Logs. A high count (3 or more) of such operations by the same caller within an hour could indicate malicious activity, such as an attacker attempting to open up network access to compromised resources or exfiltrate data.
Detects an unusual volume of 'Logging' or 'Monitor' operations within Azure Activity logs from a single caller within an hour. This could indicate an adversary attempting to enumerate logging configurations, monitor activities, or potentially tamper with logging settings as a precursor to other malicious activities or an attempt to cover tracks.
Detects when a Network Security Group (NSG) rule is successfully deleted in Azure. This could indicate an attempt to bypass network access controls, potentially to enable unauthorized access or exfiltration.
This rule detects when a single caller successfully updates three or more SQL Server firewall rules within a one-hour window. This behavior could indicate an adversary attempting to open up network access to a SQL database, potentially for data exfiltration, command and control, or further lateral movement.
Detects when a single user account performs 5 or more account creations (EventID 4720) or account enables (EventID 4722) within a one-hour period. This activity could indicate malicious behavior, such as an attacker establishing persistence or expanding access, or it could be a sign of automated account provisioning.
Detects the creation or deletion of Kubernetes namespaces and nodes via the API server. This activity can indicate an adversary attempting to establish persistence, expand their control, or disrupt the environment within a Kubernetes cluster.
Detects suspicious activity related to OAuth2PermissionGrant operations, specifically looking for a high volume of successful consent grants by a single user within a short timeframe. This could indicate an attacker attempting to gain broad access to resources by granting permissions to a malicious OAuth application.
Detects when a single user principal name (UPN) performs two or more Azure AD admin role assignments within an hour. This could indicate an attempt to escalate privileges or establish persistence by assigning administrative roles to multiple accounts or to the same account multiple times.
This rule detects suspicious activity related to Azure AD device registration. It identifies instances where a single user principal name (UPN) performs 5 or more device registrations or adds members to groups within a one-hour window, specifically targeting device resources. This could indicate an adversary attempting to register multiple devices to bypass conditional access policies or gain persistent access.
KQL Query from file: Detection for ShadowHound
This rule detects suspicious activity where a user successfully performs a multi-factor authentication (MFA) device login to Microsoft Office 365 via a browser, and within a 15-minute window, the same user either creates a new inbox rule or adds a new device. This combination of events could indicate an adversary gaining initial access and then setting up persistence (e.g., forwarding emails) or further device enrollment.
This rule detects when a user account assigns a 'Global Administrator' or 'Owner' role from multiple distinct IP addresses within a one-hour window. This behavior can indicate a compromised account being used to escalate privileges or establish persistence from different locations.
This rule detects suspicious activity involving the creation or update of managed identities and the assignment of highly privileged roles (Contributor, Owner, User Access Administrator) to them. It specifically looks for multiple such assignments within a one-hour window to managed identities associated with automation, runbook, or function resources, indicating potential privilege escalation or malicious access.
This rule alerts when edge router settings change outside an approved maintenance window. Surprise config changes can redirect traffic or weaken security controls. Confirm change tickets and the engineer responsible. Ask the person who used the computer whether they installed new software or clicked a link, and involve your security team if the answer is unclear.
Detects the configuration change that enables the 'external rest endpoint' feature in SQL Server 2025. Threat actors can abuse this feature using sp_invoke_external_rest_endpoint to natively exfiltrate data and establish C2 channels.
Detects creation of Intune device management scripts, a potential privilege abuse vector.
This rule detects direct SSH connections to cloud virtual machines (VMs) via a serial console interface. It specifically looks for HTTP traffic where the host header contains 'compute.googleapis.com' or 'cloudshell.googleapis.com' and the URI contains 'serialPort'. This indicates an attempt to establish an SSH session through the cloud provider's serial console service, which can be used for administrative access or lateral movement within a cloud environment.
This rule detects attempts to copy the running configuration from a network device via SSH. It specifically looks for the string "show running-config" within TCP traffic destined for port 22 (SSH) on the home network. This activity is often associated with reconnaissance or data exfiltration by attackers or malicious insiders.
This rule detects a replication request to a Domain Controller (DC) containing the string "DsGetNCChanges" over TCP port 389 (LDAP). This specific string is associated with Active Directory replication. The rule is designed to identify potential rogue Domain Controllers attempting to replicate with legitimate DCs, which could indicate an attacker trying to establish a malicious DC for credential harvesting or other attacks. A threshold of 3 occurrences within 60 seconds from the same source IP is set to reduce false positives.
This rule detects a high volume of access attempts (5 or more within an hour) to administrative shares (C$, D$, E$, ADMIN$) from a single source IP address. This activity can be indicative of lateral movement, data exfiltration, or reconnaissance by an adversary attempting to gain access to sensitive information or spread malware across the network.
This rule detects when a user creates two or more email forwarding rules within a one-hour period in Exchange Online. This behavior can indicate an adversary setting up persistence or exfiltration mechanisms for email.
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