Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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ET WEB_SPECIFIC_APPS Netgear password.cgi http_passwd Parameter Command Injection Attempt
ET WEB_SPECIFIC_APPS D-Link setMAC macCloneMac Parameter Buffer Overflow Attempt (CVE-2023-43237)
This rule detects attempts to exploit a vulnerability in Xerox FreeFlow Core (CVE-2025-8356) that allows for arbitrary file upload and directory traversal. The detection logic looks for HTTP POST requests with a specific content type ('multipart/related' and 'application/vnd.cip4-jmf+xml') and a 'Content-Disposition: attachment; filename="' header, combined with a PCRE regex matching directory traversal patterns (e.g., '../', '..\'). This indicates an attacker is trying to upload a malicious file or traverse directories on the server.
This rule detects attempts to exploit CVE-2024-30043, a vulnerability in Microsoft SharePoint's SPXmlDataSource. The detection is based on the presence of specific content in HTTP response bodies, including '<!DOCTYPE', '<SharePoint:SPXmlDataSource', and 'DataFile="', combined with a PCRE regex matching file or SMB paths, indicating an attempt to fetch data via XML External Entity (XXE) injection.
This rule detects an attempted buffer overflow vulnerability (CVE-2025-9298) in Tenda routers. Specifically, it looks for HTTP POST requests to the '/goform/QuickIndex' URI where the 'PPPOEPassword' parameter contains an excessively long string (100 or more characters) that could lead to a buffer overflow.
This rule detects an attempt to exploit a buffer overflow vulnerability (CVE-2024-8573) in TOTOLINK devices. The exploit targets the `setParentalRules` function within the `/cgi-bin/cstecgi.cgi` endpoint, specifically looking for HTTP POST requests with multiple parameters (desc, week, sTime, eTime) containing excessively long values (100 or more characters), indicative of a buffer overflow attempt.
This rule detects attempts to exploit a critical authentication bypass vulnerability (CVE-2025-54309) in CrushFTP's WebInterface. The exploit leverages an alternative channel to bypass authentication, specifically targeting the '/WebInterface/function/' URI with a 'command=login' parameter and a 'crushadmin' string in the 'as2-to' HTTP header. Successful exploitation could lead to unauthorized administrative access.
This rule detects attempts to exploit a command injection vulnerability (CVE-2025-57105) in D-Link devices. Specifically, it looks for HTTP GET requests to '/mng_platform.asp' where the 'addr' parameter contains characters commonly used for command injection, such as semicolons, newlines, backticks, pipes, or dollar signs, which could lead to arbitrary command execution on the device.
This rule detects an attempt to exploit a buffer overflow vulnerability (CVE-2025-9299) in Tenda routers. The exploit targets the `/goform/getMasterPassengerAnalyseData` endpoint via an HTTP POST request, specifically looking for an overly long 'time' parameter in the request body, which could lead to a buffer overflow.
Detects the use of command-line download tools to write a file with a web-related extension to a common web server directory. This behavior is consistent with webshell deployment, as seen in Sandworm campaigns.
A critical remote code execution vulnerability, CVE-2025-59287, affects Windows Server Update Services (WSUS), enabling unauthenticated attackers to execute arbitrary code via unsafe deserialization in the AuthorizationCookie.
Actively exploited since October 2025, this flaw targets WSUS servers on ports 8530/8531, often leaving forensic artifacts like modified SoftwareDistribution.log files and suspicious process chains involving w3wp.exe or wsusservice.exe spawning cmd.exe, powershell.exe, or net.exe.
The provided KQL query for Microsoft Defender XDR correlates network, file, and process events to detect exploitation attempts.
Actively exploited since October 2025, this flaw targets WSUS servers on ports 8530/8531, often leaving forensic artifacts like modified SoftwareDistribution.log files and suspicious process chains involving w3wp.exe or wsusservice.exe spawning cmd.exe, powershell.exe, or net.exe.
The provided KQL query for Microsoft Defender XDR correlates network, file, and process events to detect exploitation attempts.
Detects the creation of command-line interpreters (cmd.exe, powershell.exe) as child processes of Windows Server Update Services (WSUS) related process wsusservice.exe or w3wp.exe (WsusPool). This behavior is a key indicator of exploitation for critical remote code execution vulnerabilities such as CVE-2025-59287, where attackers spawn shells to conduct reconnaissance and further post-exploitation activities.
One of the ongoing threats that I feel we face daily is the use of multiple plugins and add-ons across various sites from devices so I focus on identifying common platforms where users might connect and utilize different features. I started with WordPress plugins to gather information and monitor user activity, particularly to stay informed about any connections to specific WordPress sites that employ unknown plugins.
Additionally, if you have installed a WordPress site on any of your devices and it is integrated with Microsoft Defender for Endpoint, this query can be adapted to detect the plugins in use by the users connectives —both from within and externally. It can also help identify potential attacks and vulnerabilities, such as outdated plugin versions.
Additionally, if you have installed a WordPress site on any of your devices and it is integrated with Microsoft Defender for Endpoint, this query can be adapted to detect the plugins in use by the users connectives —both from within and externally. It can also help identify potential attacks and vulnerabilities, such as outdated plugin versions.
Detects cast exceptions in Windows Server Update Services (WSUS) application logs that highly indicate exploitation attempts of CVE-2025-59287, a deserialization vulnerability in WSUS. The rule specifically looks for `System.InvalidCastException` and `System.Windows.Data.ObjectDataProvider` along with `Unable to cast object of type` and `System.Windows.Media.Brush` within EventID 7053 from the 'Windows Server Update Services' provider.
This KQL query identifies vulnerable VPN clients installed on endpoints that have High or Critical severity CVEs. VPN software is a high-value target for attackers because vulnerabilities can be exploited to bypass network access controls, intercept traffic, or gain remote access to internal networks.
Detects potential exploitation of Motex LANSCOPE Endpoint Manager (CVE-2025-61932). This rule identifies when a process listening on TCP port 443 receives an inbound connection and subsequently spawns a suspicious child process (like cmd.exe or powershell.exe), a behavior consistent with exploiting a remote service vulnerability.
Detects potential ASP.NET ViewState deserialization attacks, which can occur when an attacker exploits a publicly known machine key. This is often indicated by a POST request to an ASP.NET page containing a large __VIEWSTATE parameter, followed by a 500 Internal Server Error.
Detects potential exploitation attempts of Citrix NetScaler vulnerability CVE-2025-5777 (CitrixBleed 2). This involves malformed or unusually large HTTP POST requests to the /p/u/doAuthentication.do endpoint, a technique used by groups like Earth Estries.
Detects multiple TTPs associated with the exploitation of SharePoint ToolShell vulnerabilities (e.g., CVE-2025-53770) by the threat actor Storm-2603. This includes the initial exploit attempt, webshell creation, defense evasion using a vulnerable driver, and C2 communication.
Detects potential exploitation of the ToolShell remote code execution vulnerability (CVE-2025-53770) in on-premises Microsoft SharePoint servers. Attackers have been observed sending POST requests to the 'ToolPane.aspx' endpoint and subsequently dropping webshells with specific names in the SharePoint LAYOUTS directory.
Detects suspicious child processes spawned by SAP NetWeaver that could indicate potential exploitation of a vulnerability, such as CVE-2025-31324, allowing arbitrary code execution via webshells. The rule specifically looks for common command-line interpreters and scripting engines being launched from SAP NetWeaver's application directories.
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