EXPLORE DETECTIONS
Newly Observed RC4 Kerberos Service Ticket Request
Identifies a successful RC4-HMAC Kerberos service ticket request for a requester and service pair that has not been observed during the previous 7 days. A newly observed requester-to-service relationship involving an RC4-encrypted ticket may indicate Kerberoasting.
Newly Observed ScreenConnect Host Server
Detects when the ScreenConnect client (ConnectWise Control) connects to a newly observed host server that is not the official ScreenConnect cloud. ScreenConnect is a common RMM/remote access tool abused for C2 and persistence. Self-hosted or non-standard relay servers may indicate abuse or compromise. The rule aggregates by server host (parsed from the client command line), requires first-time observation within the rule window, and limits to a single host to reduce noise.
Node.js Pre or Post-Install Script Execution
This rule detects the execution of Node.js pre or post-install scripts. These scripts are executed by the Node.js package manager (npm) during the installation of packages. Adversaries may abuse this technique to execute arbitrary commands on the system and establish persistence. This activity was observed in the wild as part of the Shai-Hulud worm.
Nping Process Activity
Nping ran on a Linux host. Nping is part of the Nmap tool suite and has the ability to construct raw packets for a wide variety of security testing applications, including denial of service testing.
Nsenter Execution with Target Flag Inside Container
Detects nsenter executions from inside a monitored Linux container that include a namespace target flag (-t or --target). Adversaries abuse nsenter to attach to host or sibling namespaces and escape container isolation when combined with privileged mounts, exposed PIDs, or shared namespaces.
Nsenter to PID Namespace via Auditd
Detects nsenter executions that target PID with a namespace target flag, a pattern commonly used to attach to the host init namespace from a container or session and run with host context.
NTDS Dump via Wbadmin
Identifies the execution of wbadmin to access the NTDS.dit file in a domain controller. Attackers with privileges from groups like Backup Operators can abuse the utility to perform credential access and compromise the domain.
NTDS or SAM Database File Copied
Identifies a copy operation of the Active Directory Domain Database (ntds.dit) or Security Account Manager (SAM) files. Those files contain sensitive information including hashed domain and/or local credentials.
NullSessionPipe Registry Modification
Identifies NullSessionPipe registry modifications that specify which pipes can be accessed anonymously. This could be indicative of adversary lateral movement preparation by making the added pipe available to everyone.
Office Test Registry Persistence
Identifies the modification of the Microsoft Office "Office Test" Registry key, a registry location that can be used to specify a DLL which will be executed every time an MS Office application is started. Attackers can abuse this to gain persistence on a compromised host.
Okta AiTM Session Cookie Replay
Detects potential Adversary-in-the-Middle (AiTM) session cookie replay attacks against Okta. This rule identifies when an Okta session is used from multiple IP addresses or with suspicious non-browser user agents after initial authentication. AiTM attacks capture session cookies via phishing proxies (e.g., Evilginx, Modlishka) and replay them from attacker infrastructure, bypassing MFA. The detection correlates session start events with subsequent policy evaluations or SSO attempts that occur from different IPs or programmatic user agents.
Okta Alerts Following Unusual Proxy Authentication
Correlates the first occurrence of an Okta user session started via a proxy with subsequent Okta security alerts for the same user. Attackers frequently use proxy infrastructure (VPNs, Tor, residential proxies) to mask their origin when using stolen credentials, and their post-authentication activity often triggers additional detection rules.
Okta FastPass Phishing Detection
Detects when Okta FastPass prevents a user from authenticating to a phishing website.
Okta Multiple OS Names Detected for a Single DT Hash
Identifies when a single Okta device token hash (dt_hash) is associated with multiple operating system types. This is highly anomalous because a device token is tied to a specific device and its operating system. This alert strongly indicates that an attacker has stolen a device token and is using it to impersonate a legitimate user from a different machine.
Okta Sign-In Events via Third-Party IdP
Detects sign-in events where authentication is carried out via a third-party Identity Provider (IdP) that has not been seen before. Adversaries may add an unauthorized IdP to an Okta tenant to gain persistent access. This rule uses New Terms detection to only alert when a previously unseen IdP is used for authentication, reducing noise from legitimate federated identity providers while highlighting potentially rogue IdP additions.
Okta Successful Login After Credential Attack
Correlates Okta credential attack alerts with subsequent successful authentication for the same user account, identifying potential compromise following brute force, password spray, or credential stuffing attempts.
Okta ThreatInsight Threat Suspected Promotion
Okta ThreatInsight is a feature that provides valuable debug data regarding authentication and authorization processes, which is logged in the system. Within this data, there is a specific field called threat_suspected, which represents Okta's internal evaluation of the authentication or authorization workflow. When this field is set to True, it suggests the presence of potential credential access techniques, such as password-spraying, brute-forcing, replay attacks, and other similar threats.
Okta User Assigned Administrator Role
Identifies when an administrator role is assigned to an Okta user or group. Adversaries may assign administrator privileges to compromised accounts to establish persistence, escalate privileges, and maintain long-term access to the environment. This detection monitors for both user-level and group-level administrator privilege grants, which can be used to bypass security controls and perform unauthorized administrative actions.
Okta User Session Impersonation
A user has initiated a session impersonation granting them access to the environment with the permissions of the user they are impersonating. This would likely indicate Okta administrative access and should only ever occur if requested and expected.
Okta User Sessions Started from Different Geolocations
Detects when a specific Okta actor has multiple sessions started from different geolocations. Adversaries may attempt to launch an attack by using a list of known usernames and passwords to gain unauthorized access to user accounts from different locations.
Ollama API Accessed from External Network
Detects when the Ollama LLM server accepts connections from external IP addresses. Ollama lacks built-in authentication, so exposed instances allow unauthenticated model theft, prompt injection, and resource hijacking.
Openssl Client or Server Activity
This rule identifies when the openssl client or server is used to establish a connection. Attackers may use openssl to establish a secure connection to a remote server or to create a secure server to receive connections. This activity may be used to exfiltrate data or establish a command and control channel.
OpenSSL Password Hash Generation
This rule detects the usage of the "openssl" binary to generate password hashes on Linux systems. The "openssl" command is a cryptographic utility that can be used to generate password hashes. Attackers may use "openssl" to generate password hashes for new user accounts or to change the password of existing accounts, which can be leveraged to maintain persistence on a Linux system.
Outbound Scheduled Task Activity via PowerShell
Identifies the PowerShell process loading the Task Scheduler COM DLL followed by an outbound RPC network connection within a short time period. This may indicate lateral movement or remote discovery via scheduled tasks.