SigmaHQ Detections
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6,800 detections
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Detects suspicious exceptions within the Spring framework that could indicate attempts to exploit vulnerabilities. These exceptions often arise during web application attacks such as CSRF attempts, cookie theft, or other forms of unauthorized access or manipulation.
Detects when an AWS EFS Fileshare is deleted. This action can indicate an attempt to disrupt availability or destroy data. Adversaries might delete file systems to impact operations or cover their tracks. Note that an EFS file system cannot be deleted if it has active mount targets, implying that mount targets would need to be deleted first.
Identifies when an ElastiCache security group has been modified or deleted.
Detects when an IP set is created in AWS GuardDuty. This activity could indicate an adversary attempting to whitelist their malicious IP addresses to avoid detection by GuardDuty, thereby disabling security alerts against their activities.
This rule identifies when Azure Firewall Rule Collections (Application, NAT, and Network) are either modified or deleted. This activity can indicate an attempt to bypass network controls, potentially allowing unauthorized access or data exfiltration. Monitoring these operations is crucial for maintaining network security posture in Azure environments.
This rule detects when an application is granted delegated or app role permissions within Microsoft Graph, Exchange, SharePoint, or Azure AD. This activity can indicate an adversary attempting to establish persistence or elevate privileges by giving a malicious application access to sensitive resources.
This rule identifies user sign-ins originating from anonymous IP addresses, which may indicate the use of VPNs, Tor, or other anonymization services. Such activity can be a sign of an adversary attempting to mask their true location or identity during an access attempt.
This rule detects sign-in attempts originating from IP addresses that Microsoft Entra ID Protection has identified as malicious. These IP addresses are known to be associated with attackers or compromised systems at the time of the sign-in, indicating a high-risk authentication attempt.
This rule detects sign-in attempts originating from a country that is considered new or infrequent for the user based on their past activity locations. This behavior can indicate a compromised account being used by an attacker from an unusual geographic location.
Identifies when a service account is disabled or deleted in Google Cloud. This activity can indicate an attempt to remove access for legitimate services or users, potentially as part of an impact or defense evasion strategy.
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