Detections

Explore public detection logic contributed by the community across SIEM and rule languages.

4,259 detections

Detects usage of system utilities to discover system network connections
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
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Detects enumeration of local network configuration
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
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Detects usage of system utilities to discover files and directories
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
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Detects enumeration of local system groups
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
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Detects the enumeration of other remote systems.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
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Detects usage of system utilities (only grep for now) to discover security software discovery
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
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Detects usage of system utilities to discover system network connections
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
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This detection uses Windows security events to detect suspicious access attempts to the registry key of Azure AD Health monitoring agent.
This detection requires an access control entry (ACE) on the system access control list (SACL) of the following securable object HKLM\SOFTWARE\Microsoft\Microsoft Online\Reporting\MonitoringAgent.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
000
This detection uses Windows security events to detect suspicious access attempts to the registry key values and sub-keys of Azure AD Health service agents (e.g AD FS).
Information from AD Health service agents can be used to potentially abuse some of the features provided by those services in the cloud (e.g. Federation).
This detection requires an access control entry (ACE) on the system access control list (SACL) of the following securable object: HKLM:\SOFTWARE\Microsoft\ADHealthAgent.
Make sure you set the SACL to propagate to its sub-keys.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
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Detect priv users or groups recon based on 4661 eventid and known privileged users or groups SIDs
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
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Detects when the password policy is enumerated.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
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Adversaries may attempt to get a listing of network connections to or from the compromised system they are currently accessing or from remote systems by querying for information over the network.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
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Detects usage of the "Import-Module" cmdlet to load the "Microsoft.ActiveDirectory.Management.dl" DLL. Which is often used by attackers to perform AD enumeration.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
000
Adversaries may attempt to find domain-level groups and permission settings.
The knowledge of domain-level permission groups can help adversaries determine which groups exist and which users belong to a particular group.
Adversaries may use this information to determine which users have elevated permissions, such as domain administrators.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
000
Adversaries may attempt to get a listing of network connections to or from the compromised system they are currently accessing or from remote systems by querying for information over the network.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
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Adversaries may look for folders and drives shared on remote systems as a means of identifying sources of information to gather as a precursor for Collection and
to identify potential systems of interest for Lateral Movement.
Networks often contain shared network drives and folders that enable users to access file directories on various systems across a network.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
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Detects usage of the "Import-Module" cmdlet to load the "Microsoft.ActiveDirectory.Management.dl" DLL. Which is often used by attackers to perform AD enumeration.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
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Detects execution of ADRecon.ps1 for AD reconnaissance which has been reported to be actively used by FIN7
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
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Detects usage of the Get-ADComputer cmdlet to collect computer information and output it to a file
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
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Detects usage of the "Get-AdComputer" to enumerate Computers or properties within Active Directory.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
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Adversaries may enumerate browser bookmarks to learn more about compromised hosts.
Browser bookmarks may reveal personal information about users (ex: banking sites, interests, social media, etc.) as well as details about
internal network resources such as servers, tools/dashboards, or other related infrastructure.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
000
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