Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
292 detections
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Detects a sequence of events characteristic of exploitation against RouterOS (CVE-2026-67276/CVE-2026-86060), involving a failed SSH login attempt with the username '-2', followed by the creation of a new user account within the same SSH session, and a successful login with that newly created account.
Detects the creation or modification of Network Address Translation (NAT) rules, port forwarding settings, or virtual IP configurations across various enterprise firewall vendors. This could indicate an adversary attempting to establish persistent inbound access to an internal network segment, bypass network egress controls, or perform reconnaissance on accessible services.
This rule detects potential unauthorized account creation by correlating suspicious administrative activity on network edge devices (VPNs, firewalls) with subsequent local administrator account creation on an internal host within a one-hour window. This behavior is indicative of ransomware affiliates exploiting internet-facing infrastructure to gain initial access and escalate privileges.
Detects the deployment and activity of the MeshCentral remote management agent (meshagent), including process execution, service creation, and network communication to MeshCentral infrastructure. This behavior is indicative of unauthorized persistence and remote command-and-control, often associated with post-compromise activity such as that observed by ShinyHunters.
This rule detects potentially compromised accounts by correlating risky Entra ID sign-ins to Citrix NetScaler with subsequent VPN session establishment followed by rapid, high-volume outbound connection activity from the source IP address. This pattern is indicative of a threat actor using compromised credentials to gain access via VPN and immediately perform internal network scanning or data staging.
Detects a sequence of events characteristic of exploitation against RouterOS (CVE-2026-67276/CVE-2026-86060), involving a failed SSH login attempt with the username '-2', followed by the creation of a new user account within the same SSH session, and a successful login with that newly created account.
This rule monitors network device audit logs for suspicious activities that indicate potential persistence or defense evasion on edge/VPN/router appliances. It specifically flags configuration changes, creation of new administrative accounts, addition of unauthorized SSH keys, and the disabling of logging/syslog export, which are common tactics for maintainig unauthorized access on network infrastructure.
Detects a sequence of events characteristic of exploitation against RouterOS (CVE-2026-67276/CVE-2026-86060), involving a failed SSH login attempt with the username '-2', followed by the creation of a new user account within the same SSH session, and a successful login with that newly created account.
Detects a sequence of events characteristic of exploitation against RouterOS (CVE-2026-67276/CVE-2026-86060), involving a failed SSH login attempt with the username '-2', followed by the creation of a new user account within the same SSH session, and a successful login with that newly created account.
Detects HTTP requests directed at edge appliances (FortiOS/FortiProxy, SonicWall, Cisco ASA) that match known CVE-associated URI paths, alongside successful administrative authentication to management or VPN interfaces originating from external source IP addresses. This rule is designed to identify potential initial access via vulnerability exploitation or unauthorized administrative login to critical infrastructure.
Detects successful VPN authentication events where no multi-factor authentication (MFA) method is reported in the logs. This behavior may indicate an account compromise where an adversary has bypassed MFA or is using a legacy account that lacks MFA enforcement.
Detects a successful login attempt by the user account 'p2pwn' targeting port 37777. Port 37777 is commonly associated with DVR/NVR surveillance equipment and is frequently targeted by brute-force attacks and botnets attempting to gain unauthorized access to embedded devices.
Detects a sequence of events characteristic of exploitation against RouterOS (CVE-2026-67276/CVE-2026-86060), involving a failed SSH login attempt with the username '-2', followed by the creation of a new user account within the same SSH session, and a successful login with that newly created account.
This rule detects successful authentication events for remote access applications (VPN, RDP, Azure AD App Proxy) where the source IP address or ASN has not been observed in the user's login history within the preceding 14 days. This behavior is indicative of potential account takeover using compromised credentials sourced from infostealers or other credential-harvesting activities.
Detects a successful login attempt by the user account 'p2pwn' targeting port 37777. Port 37777 is commonly associated with DVR/NVR surveillance equipment and is frequently targeted by brute-force attacks and botnets attempting to gain unauthorized access to embedded devices.
Detects a specific Android sandbox escape technique where a malicious app enables Accessibility Services and Developer Options/Wireless Debugging to initiate a self-pairing ADB connection over localhost. This bypasses typical app sandbox restrictions, allowing the execution of processes with the UID 2000 (shell) context.
This rule detects potential usage of Hidden VNC (hVNC) tools by monitoring for specific command-line arguments (such as 'hvnc-input', 'hvnc-desktop', or 'HVNC_Telegram') and Windows events related to the creation or switching of desktops (e.g., 'CreateDesktop', 'SwitchDesktop'). hVNC is a common technique used by malware to establish a hidden remote desktop session for unauthorized access and control without alerting the user.
Detects high-velocity, automated authentication failures originating from a single IP against internet-exposed management interfaces. The rule monitors for a rapid sequence of distinct user accounts being targeted in a short time window, indicating AI-driven or automated credential stuffing/brute force activity targeting VPNs or firewalls.
Detects high-velocity, automated authentication failures originating from a single IP against internet-exposed management interfaces. The rule monitors for a rapid sequence of distinct user accounts being targeted in a short time window, indicating AI-driven or automated credential stuffing/brute force activity targeting VPNs or firewalls.
Detects high-velocity, automated authentication failures originating from a single IP against internet-exposed management interfaces. The rule monitors for a rapid sequence of distinct user accounts being targeted in a short time window, indicating AI-driven or automated credential stuffing/brute force activity targeting VPNs or firewalls.
Detects the installation of Parallels Desktop on macOS endpoints. This rule identifies when the Parallels Desktop application is installed or updated, providing visibility into the deployment of virtualization software within the environment.
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