Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
839 detections
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Detects anomalous account recovery or MFA reset activity performed by a single help-desk user account. A high volume of reset actions across numerous distinct users within a short duration is a key behavioral indicator of potential help-desk account compromise or insider abuse involving unauthorized account takeovers.
Detects modifications to Active Directory user accounts (Event IDs 4720, 4738) that coincide with suspicious MFA registration indicators—such as increased device counts, software token activations, or default device/token placeholders—within one hour of a successful user authentication event. This behavior is indicative of potential account takeover or persistence activities involving MFA manipulation.
This rule detects a sequence of events where a database user record is updated (inserting a new password hash) followed by a successful authentication for that same user, immediately following a recent login failure. This pattern is indicative of an attacker modifying credentials and then testing the new access.
Detects scenarios where a user registers a new WebAuthn/Passkey credential and subsequently performs a sign-in from a different network or device shortly after, preceded by a sign-in from a risky or non-passkey-based method. This pattern is often associated with credential abuse or MFA registration hijacking.
Detects potential privilege escalation in Entra ID (Azure AD) by monitoring for the assignment of high-privileged administrative roles to users or the granting of admin consent to applications, which can be leveraged to maintain persistence or escalate privileges.
Detects instances where a user grants OAuth application permissions to GitHub or Slack shortly (within 30 minutes) after signing into a low-trust application (Discourse or OpenAI Community), suggesting a potential session hijacking or trusted-relationship abuse scenario where an attacker leverages an existing SSO session to authorize malicious applications.
Detects unauthorized or suspicious use of Google Cloud Config Connector (KCC) service accounts to apply high-privilege IAM roles ('roles/owner' or 'roles/resourcemanager.organizationAdmin') at the Organization or Folder scope. This rule monitors for 'SetIamPolicy' API calls where the principal is identified as a KCC-related service account, flagging potential exploitation of KCC's authority to grant excessive permissions.
Detects when a Google Cloud Config Connector (KCC) Workload Identity-bound service account is granted overly permissive organization-level roles (roles/owner or roles/resourcemanager.organizationAdmin). This configuration deviates from the security best practice of using namespaced mode with per-namespace scoped identities, potentially allowing the KCC controller to gain broader access than required, which is a known attack vector for privilege escalation.
Detects a potential privilege escalation attempt where a namespace-scoped user creates a Config Connector (KCC) IAMPolicyMember resource, which is immediately followed by a high-privilege organization or folder-level SetIamPolicy operation executed by the KCC system service account, suggesting the KCC controller was manipulated to perform actions beyond the namespace's intended authorization.
Detects the creation or use of known backdoor accounts ('p2pwn', 'p2password') on Dahua surveillance devices, which are often utilized by adversaries to maintain unauthorized access to compromised hardware.
This rule detects the creation or modification of specific files ('auth_codes.json' or files containing 'seria2') associated with the offline recovery process of Dahua devices. The presence of these files suggests an attempt to utilize or access deterministic recovery codes to bypass authentication on the device.
Detects modifications to Microsoft Entra ID (formerly Azure AD) authentication methods policy where a new external authentication method is configured using a non-approved discovery URL. This could indicate an adversary attempting to configure a malicious identity provider to facilitate authentication bypass or unauthorized access.
Detects modifications to Microsoft Entra ID (formerly Azure AD) authentication methods policy where a new external authentication method is configured using a non-approved discovery URL. This could indicate an adversary attempting to configure a malicious identity provider to facilitate authentication bypass or unauthorized access.
Detects administrator-privileged actions in JFrog Artifactory audit logs attributed to the 'token:anonymous' identity, the tell-tale signature left when CVE-2026-42018 (unauthenticated token retrieval) is chained with CVE-2026-42016 (privilege escalation) to mint an admin-scope token that retains the anonymous username. Also relevant to CVE-2026-82329 authentication bypass activity.
Detects when a user account updates their multi-factor authentication (MFA) details to include a higher count of registered devices than previously recorded. This behavior could indicate an attacker adding their own device to a compromised account to bypass MFA or maintain persistent access.
Detects login events to the 'My Sign-Ins' portal (mysignins.microsoft.com) by users. This portal is a high-value target for adversaries who have gained access to a session via token theft or session hijacking, as it allows them to modify or add authentication methods (such as MFA devices) to establish long-term persistence in the victim's account.
Detects anomalous administrative activity within Microsoft Exchange by identifying accounts performing multiple suspicious operations within a short timeframe. This rule flags activities like modifying transport rules, virtual directories, or management role assignments, which are often indicative of malicious persistence or configuration tampering, while excluding known authorized service accounts.
Detects the addition of a user to the 'Domain Admins' group using common administrative command-line tools such as net group, Add-ADGroupMember, dsadd, or net localgroup. This serves as a proxy indicator for potential privilege escalation.
Detects instances where a user grants OAuth application permissions to GitHub or Slack shortly (within 30 minutes) after signing into a low-trust application (Discourse or OpenAI Community), suggesting a potential session hijacking or trusted-relationship abuse scenario where an attacker leverages an existing SSO session to authorize malicious applications.
Detects the creation of a new local user account followed by its immediate addition to the Administrators or Remote Desktop Users groups, a common pattern observed in post-exploitation activities related to CVE-2019-0708 (BlueKeep) for achieving persistent administrative access.
Detects anomalous administrative activity within Microsoft Exchange by identifying accounts performing multiple suspicious operations within a short timeframe. This rule flags activities like modifying transport rules, virtual directories, or management role assignments, which are often indicative of malicious persistence or configuration tampering, while excluding known authorized service accounts.
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