Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects kernel-level stability issues or crashes (ah6/ipsec related) occurring immediately after the execution of processes that create new user namespaces (unshare, clone with CLONE_NEWUSER). This pattern is often associated with exploitation of kernel vulnerabilities, where namespace manipulation is a prerequisite for triggering a crash or privilege escalation.
Detects high-frequency SCTP ASCONF/ADD-IP chunk packets originating from external networks. This behavior is indicative of a Denial-of-Service (DoS) exploit attempt targeting a vulnerability (CVE-2026-74469) related to DiagSpill transport_count integer wraparound.
This rule detects a high volume of SCTP traffic targeted at internal systems, characterized by mass endpoint creation. This behavior is indicative of an exploit attempt against the 'sctp_diag' kernel component (CVE-2026-74469), which can lead to an out-of-bounds (OOB) write condition, potentially resulting in system instability or denial of service.
This rule detects potential exploitation attempts against SonicWall SMA1000 appliances, specifically targeting the /wsproxy endpoint using a custom 'SMA Connect Agent' user agent string. This behavior is associated with SSRF vulnerabilities (CVE-2026-15409 and CVE-2026-15410) identified as being utilized by the threat actor group UTA0533 in campaigns involving INC Ransomware.
Detects potential local privilege escalation via Windows ALPC (Advanced Local Procedure Call) heap-based buffer overflow by identifying a non-SYSTEM Chrome process tree spawning child processes with SYSTEM privileges. The rule specifically monitors for suspicious child binaries or paths characteristic of exploit payloads while excluding legitimate Chrome update and crash handler processes.
This rule monitors the Microsoft IIS worker process (w3wp.exe) for the spawning of suspicious child processes often associated with web shell activity, such as command shells (cmd.exe, powershell.exe) or compiler/utility tools (csc.exe, cvtres.exe, rundll32.exe, regsvr32.exe). It further filters for command lines containing Exchange or OWA-related strings, and flags executions containing known web shell indicators (e.g., VIEWSTATE, GhostWebShell, reGeorg).
Detects high-volume HTTP GET requests containing the 'SetupCompleted' URI pattern directed at PaperCut servers, which is indicative of automated exploitation attempts targeting authentication bypass vulnerabilities.
This rule detects attempts to exploit Apache Nacos vulnerabilities, including authentication bypass and unauthorized administrative account creation. It monitors process executions of common tools (like curl and java) and network connections targeting known Nacos service ports (8848, 9848) containing indicators of exploit patterns such as login bypass endpoints or SQL injection sequences targeting the user table.
Detects the use of the 'tar' utility with the '--use-compress-program' flag, where the compression program specified is not a standard system compression tool. This pattern is commonly used by attackers to execute arbitrary payloads when tar extracts malicious archives.
Detects attempts to exploit the Langflow 'validate/code' endpoint, which is associated with CVE-2025-3248. The rule monitors HTTP POST requests to this endpoint for specific character patterns within the request body, indicative of malicious payloads attempting to achieve code execution.
Detects repeated HTTP POST requests containing 'ScreenConnect' in the URI, originating from external networks. This pattern is indicative of automated scanning activity attempting to exploit potential authentication bypass or session hijacking vulnerabilities (such as CVE-2026-84869) in ConnectWise ScreenConnect instances.
Detects potential exploitation attempts against Microsoft Exchange Server, specifically targeting the ECP (Exchange Control Panel) through VIEWSTATE parameter tampering related to CVE-2020-0688, and correlates this with suspicious behavior in the w3wp.exe process, such as unauthorized module loading (e.g., clr.dll, system.web.dll) and abnormal child process creation which may indicate the deployment of in-memory backdoors like GhostContainer.
Detects unauthorized file write operations performed by ScreenConnect client or service processes into client/transfer directories. This activity is indicative of exploitation attempts, specifically CVE-2026-84869, which allows for unauthorized file transfers and potential remote code execution via active ScreenConnect sessions without user confirmation.
Detects an attempt to exploit CVE-2025-3248, an unauthenticated remote code execution vulnerability in Langflow. The rule identifies POST requests to the '/api/v1/validate/code' endpoint that contain base64 encoded strings in the request body, which are characteristic of malicious Python payloads designed to execute arbitrary code.
Detects anomalous MS_T120 channel binding and MCS handshake patterns characteristic of the BlueKeep (CVE-2019-0708) remote code execution vulnerability in Microsoft RDP services.
Detection rules identifying malformed RDP MCS Connect Initial PDUs and unusual service crashes following RDP connection attempts, both indicative of exploitation attempts against the CVE-2019-0708 (BlueKeep) vulnerability.
Detection rules identifying malformed RDP MCS Connect Initial PDUs and unusual service crashes following RDP connection attempts, both indicative of exploitation attempts against the CVE-2019-0708 (BlueKeep) vulnerability.
Detects anomalous child processes spawned by the Microsoft Exchange IIS worker process (w3wp.exe). This activity is often observed during post-exploitation phases of vulnerabilities like ProxyLogon (CVE-2021-26855), where attackers attempt to gain code execution by spawning command shells or administrative tools from the web server process.
Detects incoming HTTP requests to Microsoft Exchange servers that match patterns indicative of exploitation attempts for the ProxyLogon SSRF vulnerability (CVE-2021-26855). This includes detecting specific manipulation of the Autodiscover service and the injection of X-BEResource or X-AnonResource-Backend headers, which were commonly used during the initial access phase of this campaign.
Detects attempts to bypass authentication on Nacos servers, including the use of spoofed Nacos-Server User-Agent headers, suspicious API query patterns missing required access tokens, and the subsequent use of forged JWT tokens signed with default keys.
Detects unauthenticated HTTP POST requests targeting the FortiGate administrative API (/api/v2/), which may indicate exploitation attempts related to CVE-2025-25249. The rule specifically looks for requests lacking authentication headers (Cookie or Authorization).
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