Browse Rules

Entra ID Protection - Risk Detection - User Risk

Identifies user risk detection events via Microsofts Entra ID Protection service. Entra ID Protection detects user risk activity such as anonymized IP addresses, unlikely travel, password spray, and more.

Entra ID Protection - Risk Detection - Sign-in Risk

Identifies sign-in risk detection events via Microsofts Entra ID Protection service. Entra ID Protection detects sign-in activity such as anonymized IP addresses, unlikely travel, password spray, and more.

M365 Purview Insider Risk Signal

Identifies Microsoft Purview Insider Risk Management signals including alerts, cases, scoped user insights, HR signals, and physical badging signals. These events indicate potential insider threats, compromised user accounts, or anomalous user behavior patterns detected by Microsoft's behavioral analytics. This building block rule generates security events for correlation, threat hunting, and telemetry collection to support detection of insider threats and account compromise.

Entra ID Protection - Risk Detection

Identifies Microsoft Entra ID Protection sign-in risk detections triggered by a range of risk events such as anonymized IP addresses, password spray attacks, impossible travel, token anomalies, and more. These detections are often early indicators of potential account compromise or malicious sign-in behavior. This is a promotion rule intended to surface all Entra ID sign-in risk events for further investigation and correlation with other identity-related activity. This is a building block rule t

M365 Entra ID Risk Detection Signal

Identifies Microsoft Entra ID (formerly Azure AD) risk detection signals including risky sign-ins, compromised credentials, impossible travel, and other identity-based anomalies. These events indicate potential credential compromise, account takeover attempts, or suspicious authentication patterns detected by Microsoft's identity protection. This building block rule generates security events for correlation, threat hunting, and telemetry collection to support detection of credential access and i

AWS Bedrock High Risk Filesystem or Execution Tool Invocation

Detects when a Bedrock model is prompted to invoke high-risk tools associated with shell execution, filesystem operations, or process spawning. Adversaries may use compromised AI agent pipelines or manipulated prompts to instruct the model to execute arbitrary system commands, read or write sensitive files, or spawn subprocesses — extending the blast radius of a credential compromise or prompt injection attack.

Kubernetes Cluster-Admin Role Binding Created

This rule detects the creation of a RoleBinding or ClusterRoleBinding that grants the cluster-admin ClusterRole, which provides unrestricted access to all Kubernetes resources and represents a high-risk privilege escalation or misconfiguration.

Kubernetes Creation or Modification of Sensitive Role

Detects the creation or modification of Kubernetes Roles or ClusterRoles that grant high-risk permissions, such as wildcard access or RBAC escalation verbs (e.g., bind, escalate, impersonate), which may enable privilege escalation or unauthorized access within the cluster.

Entra ID Protection Admin Confirmed Compromise

Identifies when an administrator has manually confirmed a user or sign-in as compromised in Microsoft Entra ID Protection. This indicates that an administrator has reviewed the risk detection and determined that the user account or sign-in activity is definitively compromised. This is a high-confidence indicator of account compromise and should be investigated immediately.

Google Workspace Login Flagged Suspicious

Surfaces Google Workspace sign-in events that Google's identity risk engine has flagged as suspicious via the `is_suspicious` field on the `login` activity record. This is Google's own ML-driven sign-in risk signal. The field is set by Google server-side based on signals like sign-ins from anonymizer infrastructure, known-malicious IP ranges, atypical user characteristics, or anomalous device fingerprints. Use this signal as enrichment alongside the other Workspace sign-in rules rather than as a

GKE Creation or Modification of Sensitive Role

Detects creation or modification of GKE Roles or ClusterRoles that grant high-risk permissions, such as wildcard access or RBAC escalation verbs (bind, escalate, impersonate), which may enable privilege escalation or unauthorized access within the cluster.

Exec Into Container Detected via Defend for Containers

This rule detects 'exec' events launched against a container using the 'exec' command. Using the 'exec' command in a pod allows a user to establish a temporary shell session and execute any process/command inside the container. This rule specifically targets higher-risk commands that allow real-time interaction with a container's shell. A malicious actor could use this level of access to further compromise the container environment or attempt a container breakout.

Process Started with Executable Stack

This rule monitors the syslog log file for messages related to instances of processes that are started with an executable stack. This can be an indicator of a process that is attempting to execute code from the stack, which can be a security risk.

O365 Anonymous Link Used [splunk-o365]

This use case detects when an anonymous sharing link is used to access files or folders in SharePoint Online or OneDrive for Business. These links allow external users to access shared content without authentication, meaning anyone with the link can access the resource, making it a potential security risk if not managed carefully. A threat actor could abuse the anonymous link functionality to gain access to sensitive data, bypass authentication mechanisms, and exfiltrate information.

M365 Exchange Mailbox High-Risk Permission Delegated

Identifies the assignment of rights to access content from another mailbox. An adversary may use the compromised account to send messages to other accounts in the network of the target organization while creating inbox rules, so messages can evade spam/phishing detection mechanisms.

AWS CloudTrail Log Deleted

Detects deletion of an AWS CloudTrail trail via DeleteTrail API. Removing trails is a high-risk action that destroys an audit control plane and is frequently paired with other destructive or stealthy operations. Validate immediately and restore compliant logging.

O365 Secure Link Created [splunk-o365]

This use case detects when a secure link is created for files and folders in SharePoint Online or OneDrive for Business. These links allow users to access shared content, making it a potential security risk if not managed carefully. A threat actor could abuse the secure link functionality to gain access to sensitive data, bypass authentication mechanisms, and exfiltrate information.

O365 Sharing Link Created [splunk-o365]

This use case detects when a sharing link is created for files and folders in SharePoint Online or OneDrive for Business. These links allow external users to access shared content, making it a potential security risk if not managed carefully. A threat actor could abuse the shared link functionality to gain access to sensitive data, bypass authentication mechanisms, and exfiltrate information.

AWS EC2 Deprecated AMI Discovery

Identifies when a user has queried for deprecated Amazon Machine Images (AMIs) in AWS. This may indicate an adversary looking for outdated AMIs that may be vulnerable to exploitation. While deprecated AMIs are not inherently malicious or indicative of a breach, they may be more susceptible to vulnerabilities and should be investigated for potential security risks.

Google Workspace Device Registration After OAuth from Suspicious ASN

Detects when a Google Workspace account completes OAuth authorization for a specific Google OAuth client from a high-risk autonomous system number (ASN), followed within 30 seconds by a device registration event with account state REGISTERED. This sequence can indicate device enrollment or join flows initiated from attacker-controlled or residential-proxy infrastructure after a user authorizes a sensitive client.

AWS Sensitive IAM Operations Performed via CloudShell

Identifies sensitive AWS IAM operations performed via AWS CloudShell based on the user agent string. CloudShell is a browser-based shell that provides command-line access to AWS resources directly from the AWS Management Console. While convenient for administrators, CloudShell access from compromised console sessions can enable attackers to perform privileged operations without installing tools or using programmatic credentials. This rule detects high-risk actions such as creating IAM users, acc

Kubernetes Sensitive RBAC Change Followed by Workload Modification

Detects a sequence where a principal creates or modifies a Role/ClusterRole to include high-risk permissions (e.g., wildcard access or escalation verbs) and then creates or patches a workload resource (DaemonSet, Deployment, or CronJob) shortly after, which may indicate RBAC-based privilege escalation followed by payload deployment. This pattern is often used by adversaries to gain unauthorized access to sensitive resources and deploy malicious payloads.

Entra ID Protection Alerts for User Detected

Identifies more than two Microsoft Entra ID Protection alerts associated to the user principal in a short time period. Microsoft Entra ID Protection alerts are triggered by suspicious sign-in activity, such as anomalous IP addresses, risky sign-ins, or other risk detections. Multiple alerts in a short time frame may indicate an ongoing attack or compromised account.

O365 Anonymous Link Created or Updated [splunk-o365]

This use case detects when an anonymous sharing link is created or updated for files and folders in SharePoint Online or OneDrive for Business. These links allow external users to access shared content without authentication, meaning anyone with the link can access the resource, making it a potential security risk if not managed carefully. A threat actor could abuse the AnonymousLinkCreated and AnonymousLinkUpdated functionality to gain access to sensitive data, bypass authentication mechanisms,

Suspicious SUID Binary Execution (Auditd Sequence)

Detects suspicious sequences where a non-root user launches a high-risk parent process (interpreter, shell one-liner, or execution from user-writable paths) and then quickly executes a common privilege elevation helper (su, sudo, pkexec, passwd, chsh, newgrp) that gains an effective UID of 0 while the real UID remains non-root. This can indicate misuse of SUID/SGID helpers, polkit/sudo abuse, or interactive privilege escalation attempts captured via Auditd Manager telemetry.