Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule identifies and aggregates blocked requests from Imperva WAF logs, grouping them by source IP address and then by the owning organization (ASN). It helps to detect and analyze potential attack campaigns or coordinated malicious activity originating from specific organizations or IP ranges. The rule focuses on security, session, and visitor blocks, providing details on attack names, query strings, referrers, and URLs.
Detects Microsoft Office applications (Word, Excel, PowerPoint, Outlook) spawning suspicious child processes like command shells or script interpreters. This behavior can be indicative of malicious macro execution or exploitation of vulnerabilities, such as CVE-2026-21509, where an embedded OLE object leads to code execution.
Detects the GNU telnetd service spawning the login binary with the '-f' flag, which is used to skip authentication. This is the primary indicator of the CVE-2026-24061 exploitation. This detection requires process creation logging on Linux, which can be enabled via tools like Sysmon for Linux.
Detects the exploitation of CVE-2026-24061, a critical authentication bypass vulnerability in GNU telnetd. The rule identifies when the 'telnetd' process spawns '/usr/bin/login' with the '-f' flag, which skips authentication and grants the attacker remote access.
Detects exploitation attempts and worm-like scanning behavior targeting Next.js applications, characteristic of the EtherRAT malware. The rule identifies web requests with the 'x-middleware-subrequest' header (CVE-2025-29927) or scanning of sensitive paths like '/_next/data/' from internal sources.
Detects when a potentially malicious file (such as a macro-enabled document, executable, or script) is created within a directory configured as a Microsoft Office Trusted Location. Attackers may place malicious files in these locations to ensure they are opened by the user without security warnings (like Protected View or macro-blocking), facilitating code execution. This rule correlates file creation events with trusted paths dynamically enumerated from the device's registry.
Detects the loading of a vulnerable Baidu Antivirus driver (CVE-2024-51324), a technique used by DeadLock ransomware, followed by the termination of a security product process on the same host. This indicates a 'Bring Your Own Vulnerable Driver' (BYOVD) attack to disable defenses.
This rule detects a multi-stage attack chain starting with a high-confidence phishing email, followed by a risky sign-in from the recipient, and culminating in sensitive actions within Azure, specifically targeting IAM role assignments, storage account key access, or AKS cluster modifications. The detection correlates these events within a defined time window to identify potential compromise of cloud resources originating from a successful phishing attack.
Detects processes opening a handle to the device symbolic link '\\.\HtAntiCheatDriver'. This is the static interface for the vulnerable GameDriverX64.sys driver (CVE-2025-61155) used by the Interlock ransomware group in Bring Your Own Vulnerable Driver (BYOVD) attacks to disable security software.
Detects the execution of the 'login' process with the '-f' flag, which skips authentication. When spawned by 'telnetd', this is a strong indicator of exploitation of CVE-2026-24061, a critical authentication bypass vulnerability.
Detects attempts to exploit the Apache bRPC heap profiler command injection vulnerability, CVE-2025-60021. This is done by monitoring for HTTP GET requests to the `/pprof/heap` endpoint where the `extra_options` parameter contains shell metacharacters indicative of an RCE attempt.
Detects processes opening a handle to the device symbolic link '\\.\HtAntiCheatDriver'. This is the static interface for the vulnerable GameDriverX64.sys driver (CVE-2025-61155) used by the Interlock ransomware group in Bring Your Own Vulnerable Driver (BYOVD) attacks to disable security software.
This rule detects successful SSO logins on FortiGate devices using usernames and source IP addresses associated with a known malicious campaign exploiting a SAML SSO bypass. The rule specifically looks for successful SSO logins (logid == "0100032001", method == "sso", status == "success") from a predefined list of malicious usernames or source IP addresses.
Detects when the Windows Admin Center service ('SmeSvc.exe') is stopped, and shortly thereafter, a different process starts listening on the WAC port (TCP/6516). This behavior is a key indicator of CVE-2026-20965 exploitation, where an attacker impersonates the service to steal administrator access tokens.
Detects instances where the telnetd process spawns the login binary with the '-f' flag. This behavior is indicative of exploitation of CVE-2026-24061, which allows an attacker to bypass authentication by injecting arguments into the login process via a crafted USER environment variable.
Detects attempts to exploit an authentication bypass vulnerability in the Inetutils Telnet daemon. Attackers inject the '-f' flag into the 'USER' environment variable during Telnet negotiation to gain unauthorized shell access.
Detects attempts to exploit the SmarterMail authentication bypass vulnerability (WT-2026-0001) by sending a POST request to the /api/v1/auth/force-reset-password endpoint with 'IsSysAdmin' set to 'true'.
Detects HTTP POST requests to the Appsmith password reset endpoint where the 'Origin' header does not match the expected internal or legitimate application domain. This is indicative of an attempt to exploit CVE-2026-22794 to achieve account takeover.
Detects an anomalously high rate of network connections to a MongoDB server from a single source IP, a pattern associated with the exploitation of MongoBleed (CVE-2025-14847).
Detects when a Visual Studio Code configuration file is modified, followed by the execution of a shell or networking tool by VS Code. This pattern may indicate abuse of GitHub Copilot via prompt injection (CVE-2025-53773) to achieve remote code execution.
This rule detects inbound network connections to internet-facing devices on ports other than 80 (HTTP) or 443 (HTTPS). This could indicate an adversary attempting to establish command and control, exfiltrate data, or exploit services running on non-standard ports.
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