Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects AWS console logins from countries and IP addresses that are not recognized as legitimate for the organization. This alert can help identify potential unauthorized access attempts from unusual locations, which may indicate compromised credentials or malicious activity.
This rule identifies suspicious usage of the AWS Security Token Service (STS) `AssumeRole` API call. Specifically, it looks for instances where the `userIdentity.type` is `AssumedRole` and the `userIdentity.sessionContext.sessionIssuer.type` is `Role`. This pattern indicates that an AWS role is being assumed by another role, which could be a legitimate administrative action but also a technique used by attackers for lateral movement and privilege escalation within an AWS environment. Attackers might use `AssumeRole` to switch to roles with higher privileges or to move between different accounts or services after gaining initial access.
Detects the import of SSH key pairs into AWS EC2, which may indicate an attacker attempting to gain unauthorized access to instances. This activity could lead to initial access, persistence, or privilege escalation, potentially compromising sensitive data and operations.
Detects the deletion of S3 buckets in AWS CloudTrail logs. Monitoring the deletion of S3 buckets is critical for security and data integrity, as it may indicate potential data loss or unauthorized access attempts.
Detects the deletion of an AWS SAML provider, which could indicate an attacker attempting to disrupt administrative or security team access. By removing the SAML provider, an adversary can hinder the ability of security personnel or system administrators to investigate and respond during an attack.
Detects activity when an AWS user's login profile (password) is modified by another user. This can indicate an attacker with the "iam:UpdateLoginProfile" permission is changing passwords on behalf of other users to gain access to the AWS console.
This rule detects the creation of AWS API keys for a user by a different user. This activity is indicative of a backdoored user account being used to establish persistence within an AWS environment. It can also help identify unusual flows of AWS key creation within an organization.
Detects the S3 Browser utility creating an IAM User or AccessKey in AWS. This activity can be indicative of an attacker establishing persistence or escalating privileges within an AWS environment.
This rule identifies the suspicious use of the AWS Security Token Service (STS) API call `GetSessionToken`. This API call is used to request temporary, limited-privilege credentials for an IAM user or role. Attackers may use `GetSessionToken` to generate temporary tokens to move laterally within an AWS environment or escalate privileges by assuming roles with broader permissions. The rule specifically looks for `GetSessionToken` calls made by an `IAMUser`.
Detects when an AWS Route 53 domain is transferred to another AWS account. This activity could indicate an attempt by an adversary to maintain persistence or exfiltrate domain control by moving it to an account they control.
This rule identifies suspicious activity related to Security Assertion Markup Language (SAML) in AWS. Specifically, it looks for two events: `AssumeRoleWithSAML` from the `sts.amazonaws.com` service and `UpdateSAMLProvider` from the `iam.amazonaws.com` service. An adversary could leverage these actions to gain unauthorized access, establish persistence, or escalate privileges within an AWS environment by manipulating SAML providers or assuming roles via SAML.
Detects the use of the 'EnableRegion' command in AWS CloudTrail logs. This command allows an AWS account to enable additional regions. Monitoring this activity is crucial because adversaries might enable new, less-monitored regions to establish persistence, exfiltrate data, or conduct other malicious activities, potentially bypassing existing security controls that are not configured for these new regions.
Detects the S3 Browser utility performing reconnaissance by checking for existing AWS IAM Users without a LoginProfile defined, and subsequently creating a LoginProfile if one is not found. This behavior has been associated with the Guivil threat actor.
Detects changes to the AWS Identity Center (formerly AWS SSO) identity provider configuration. Such changes, including associating, disassociating, enabling, or disabling an external identity provider, could be used by an attacker to establish persistent access or escalate privileges through user impersonation.
Detects failed AWS console login attempts due to authentication failures. Monitoring these events is crucial for identifying potential brute-force attacks or unauthorized access attempts to AWS accounts.
Detects when a transfer lock was removed from an AWS Route 53 domain. This action is typically performed when intending to transfer the domain to a different registrar, but it can also be an indicator of malicious activity if unauthorized. Disabling the transfer lock makes the domain vulnerable to unauthorized transfers, which could lead to domain hijacking or redirection of traffic.
Detects the deletion of one or more VPC Flow Logs in AWS Elastic Compute Cloud (EC2) through the DeleteFlowLogs API call. Adversaries may delete flow logs to evade detection or remove evidence of network activity, hindering forensic investigations and visibility into malicious operations.
Detects the creation of an Inline IAM policy by the 'S3 Browser' utility, where the policy still contains the default S3 bucket name placeholder value of "<YOUR-BUCKET-NAME>" instead of a specific bucket name. This indicates a potential misconfiguration or an attempt to create a broad policy that might be further exploited.
The following analytic detects the creation of an AWS DataSync task, which could indicate potential data exfiltration. It leverages AWS CloudTrail logs to identify the `CreateTask` event from the DataSync service. This activity is significant because attackers can misuse DataSync to transfer sensitive data from a private AWS location to a public one, leading to data compromise. If confirmed malicious, this could result in unauthorized access to sensitive information, causing severe data breaches and compliance violations.
Detects when a request has been made to transfer a Route 53 domain to another AWS account.
Detects the execution of TruffleHog, a popular open-source tool used for scanning repositories for secrets and sensitive information, within an AWS environment.
It has been reported to be used by threat actors for credential harvesting. All detections should be investigated to determine if the usage is authorized by security teams or potentially malicious.
It has been reported to be used by threat actors for credential harvesting. All detections should be investigated to determine if the usage is authorized by security teams or potentially malicious.
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