Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
839 detections
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Detects when a user account is added to a local privileged group (sudo or wheel) on a Linux endpoint using the 'usermod' utility. This action grants the user administrative privileges and could be indicative of privilege escalation.
Detects various sensitive configuration modifications in AWS that could indicate malicious activity, such as privilege escalation, defense evasion, or data exposure. This rule looks for a curated list of API calls related to changes in IAM, EC2 security groups, S3 bucket policies, and logging configurations.
Detects when a user account is added to a local privileged group (sudo or wheel) on a Linux endpoint using the 'usermod' utility. This action grants the user administrative privileges and could be indicative of privilege escalation.
Cisco Local Accounts
Sigma
Find local accounts being created or modified as well as remote authentication configurations
This rule detects changes to global permissions within Bitbucket. This includes requests to grant or remove global permissions, as well as the successful granting or removal of such permissions. Monitoring these events is crucial for identifying unauthorized privilege escalation or persistence attempts within a Bitbucket instance.
This rule detects when an MDE offboarding package is downloaded.
This activity could indicate an attempt to remove an endpoint from security monitoring or management, potentially by an insider threat or an attacker attempting to evade detection.
This activity could indicate an attempt to remove an endpoint from security monitoring or management, potentially by an insider threat or an attacker attempting to evade detection.
Detects when an API access service account is granted domain authority within Google Workspace. This action can be used by an attacker to gain persistent and elevated access to an organization's Google Workspace data and services by allowing a service account to impersonate users across the domain.
Detects the creation of a new user account with privileged User ID (UID) or Group ID (GID) on Linux systems, specifically targeting root (UID=0, GID=0), wheel (GID=10), or sudo (GID=27) groups. This rule monitors logs for `useradd` events indicating the creation of users with these elevated privileges.
This rule detects modifications to Active Directory user accounts that could enable an attacker to control another user's or computer's account without needing their credentials. Specifically, it looks for changes to attributes related to delegation, such as 'msDS-AllowedToDelegateTo' and 'msDS-AllowedToActOnBehalfOfOtherIdentity', or the 'servicePrincipalName' attribute for user objects, which can be abused for Kerberoasting or other delegation attacks. Event ID 4738 indicates a user account was changed, and Event ID 5136 indicates a directory service object was modified.
Detects the renaming of an existing computer account to an account name that doesn't contain a '$' symbol, which is a key indicator of the CVE-2021-42287 (SamAccountName Spoofing) attack. This technique is often used to impersonate a Domain Controller.
This rule detects the creation or modification of local user accounts and changes to remote authentication configurations on Cisco devices. It specifically looks for keywords 'username' and 'aaa' in Cisco AAA logs, indicating actions related to account management or authentication settings.
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 attempts to backdoor a domain object by granting DCSync rights to a regular user or machine account. This is achieved by modifying the 'ntSecurityDescriptor' attribute in Active Directory, specifically looking for GUIDs associated with DCSync extended rights. Such a modification allows the designated account to perform DCSync attacks, enabling the retrieval of password hashes for any user or computer in the domain.
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.
This rule detects anomalous user activity patterns, specifically focusing on suspicious changes to directories or other behaviors that Microsoft Entra ID Protection identifies as 'anomalousUserActivity'. This could indicate compromised accounts or insider threats.
Detects when a Google Workspace user is granted administrative privileges. This could indicate a legitimate administrative action or a malicious attempt to escalate privileges within the Google Workspace environment.
This rule detects the execution of the 'esxcli' command on an ESXi host with specific arguments to assign administrative permissions to an account. The command line must contain 'system', 'permission', 'set', and 'Admin', indicating an attempt to modify user permissions to grant administrative privileges. This activity is highly suspicious as it can lead to privilege escalation or persistence on the hypervisor.
This rule detects when a new member is added to a security-enabled global group in a Windows environment. This activity is significant because adding users to such groups can grant them elevated privileges or access to sensitive resources, making it a common action for adversaries attempting privilege escalation or persistence.
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.
Detects when a user account is added to the local 'Administrators' group on a Windows system. This activity is critical for privilege escalation and persistence, as it grants the added user administrative rights. While it can be a legitimate administrative action, it is also a common technique used by attackers to maintain control and elevate privileges after initial compromise.
Detects global permissions change activity.
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