Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects suspicious activity related to Azure Active Directory service principals. It specifically looks for a service principal performing multiple (5 or more within an hour) 'Add service principal', 'Add owner to application', or 'Add permission grant' operations. This pattern could indicate an attacker attempting to escalate privileges or establish persistence within an Azure AD environment by manipulating service principals and application permissions.
This rule detects suspicious activity related to Azure Active Directory service principals. It specifically looks for a service principal performing multiple (5 or more within an hour) 'Add service principal', 'Add owner to application', or 'Add permission grant' operations. This pattern could indicate an attacker attempting to escalate privileges or establish persistence within an Azure AD environment by manipulating service principals and application permissions.
This rule detects suspicious application consent activity in Azure AD. It identifies instances where a user successfully grants consent to three or more applications within a one-hour window. This behavior can indicate an adversary attempting to gain access to resources by tricking users into consenting to malicious applications.
This rule detects when additional cloud credentials (Access Keys) are added to an AWS IAM user. It specifically looks for HTTP traffic to 'iam.amazonaws.com' containing 'CreateAccessKey' in the URI, indicating an attempt to create new access keys.
Azure REST API Command Execution
Suricata
This rule detects HTTP POST requests to the Azure management API (management.azure.com). A high volume of such requests (20 within 10 seconds from the same source) could indicate automated activity, potentially related to command execution or resource manipulation within an Azure environment.
This rule detects when an AWS Systems Manager (SSM) Run Command is executed on an EC2 instance. It specifically looks for HTTP traffic to 'ssm.amazonaws.com' with the URI containing 'SendCommand'. This indicates an attempt to remotely execute commands on an EC2 instance via AWS SSM.
This rule detects HTTP traffic indicating a potential cloud service compromise for cryptomining. Specifically, it looks for HTTP requests to 'ec2.amazonaws.com' with the URI containing 'RunInstances' and the client body containing 'p3' (case-insensitive). This combination suggests an attempt to provision EC2 instances, possibly for cryptomining, using a compromised AWS account.
This rule detects AWS IAM user account enumeration attempts via the ListUsers API call. It triggers when five or more HTTP requests to 'iam.amazonaws.com' containing 'ListUsers' in the URI are observed from a single source IP within a 30-second window. This behavior is indicative of an attacker trying to discover valid IAM user accounts.
This rule detects HTTP traffic where the host header contains specific cloud region identifiers that are considered rarely used. The rule is triggered if 10 such events occur within 60 seconds from the same source IP address. The identified regions are 'ap-east-1', 'me-south-1', 'af-south-1', and 'eu-south-1'. This could indicate an attempt to evade detection by using less common cloud infrastructure or an unauthorized API call from an unusual geographic location.
This rule detects attempts to delete a cloud security group rule via the AWS EC2 API. Specifically, it looks for HTTP traffic to 'ec2.amazonaws.com' with the URI containing 'RevokeSecurityGroupIngress', which is the API call used to remove an inbound rule from a security group.
This rule detects HTTP traffic indicating an Amazon EC2 instance is being reverted to a snapshot. Specifically, it looks for HTTP requests to 'ec2.amazonaws.com' with the URI containing 'RestoreSnapshotTier'. This activity could be part of a cleanup process or an attempt to restore a compromised instance to a known good state, but could also be used by an attacker for defense evasion by reverting changes.
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 the creation or modification of Power Automate flows that connect to external services commonly used for data exfiltration or command and control, such as webhooks, Gmail, Dropbox, Google Drive, Slack, RSS feeds, custom connectors, or generic HTTP requests/webhooks. This could indicate an adversary attempting to establish persistence or exfiltrate data from the Power Platform environment.
This rule detects when a user performs a security investigation query within Google Workspace using the Security Investigation Tool. It extracts the user's UPN, the data source being investigated, and the query itself. This can help identify potential insider threat activity, unauthorized investigations, or unusual administrative behavior.
This rule detects the issuance of OAuth tokens or OAuth consent events within cloud applications. It specifically looks for these events where the client application is not 'Microsoft Teams' or 'Azure CLI'. The rule summarizes the number of grants and distinct users for each client application and token ID over hourly intervals. This can help identify potentially unauthorized or suspicious OAuth application consents.
This rule detects HTTP POST requests to 'cloudfunctions.net', indicating a Google Cloud Function is being triggered for execution. The rule uses a threshold to alert only if 20 such requests are observed from the same source within 60 seconds, aiming to reduce noise from legitimate, infrequent triggers.
This rule detects HTTP POST requests to AWS Lambda invocation endpoints, specifically targeting URLs matching the pattern '/lambda.[a-z0-9-]+.amazonaws.com' with the URI '/invocations'. A threshold of 20 such requests within 60 seconds from a single source IP triggers the alert, indicating potential code execution activity via AWS Lambda.
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.
This rule detects the creation of new service principals or the assignment of new role assignments to existing service principals in Azure Active Directory. It specifically looks for assignments that grant high-privilege roles such as "Contributor", "Owner", or "Global Admin". The rule aggregates these changes by target and time, highlighting instances where multiple changes or distinct initiators are involved.
This rule detects suspicious activity involving API key rotation followed by high usage. It correlates audit logs for API key operations (rotate, update, create) with cloud application events showing API requests or token usage. Specifically, it looks for instances where an API key is rotated, updated, or created, and then subsequently used more than 50 times within a day by the same actor. This could indicate an adversary gaining access to an API key and then rapidly utilizing it for malicious purposes.
This rule detects the launch of a GPU instance in Google Cloud Platform (GCP) by monitoring HTTP traffic. Specifically, it looks for HTTP requests to 'compute.googleapis.com' with the URI containing '/instances' and the client body containing 'acceleratorType' (case-insensitive). This combination suggests an attempt to provision a GPU-enabled virtual machine, which could be indicative of resource hijacking for purposes like cryptocurrency mining or other compute-intensive malicious activities.
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