Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects suspicious child processes spawned by the GoAnywhere MFT Tomcat service. This behavior is consistent with post-exploitation activity following a successful remote code execution exploit of CVE-2025-10035, as observed in campaigns by the threat actor Storm-1175.
Detects potential exploitation of CVE-2025-41244, a local privilege escalation vulnerability in VMware Tools and Aria Operations.
An attacker can stage a malicious binary in a world-writable directory (e.g., /tmp) which is then executed with root privileges by the VMware service discovery mechanism when it attempts to determine the binary's version.
An attacker can stage a malicious binary in a world-writable directory (e.g., /tmp) which is then executed with root privileges by the VMware service discovery mechanism when it attempts to determine the binary's version.
Detects potential exploitation of VMware CVE-2025-41244, where a privileged VMware service discovery script executes a binary from a world-writable directory like /tmp. This behavior is consistent with the local privilege escalation technique used by UNC5174.
Detects attempts to exploit multiple vulnerabilities (CVE-2025-52905, CVE-2025-52906, CVE-2025-52907) in TOTOLINK X6000R routers. Attackers can leverage argument injection, unauthenticated command injection, and security bypasses through the '/cgi-bin/cstecgi.cgi' endpoint to achieve remote code execution or denial of service.
Detects the attempted creation of a file containing 'spinstall0' in specific SharePoint LAYOUTS directories. This activity is a strong indicator of an attempt to exploit the SharePoint Server vulnerability CVE-2025-53770, which could lead to webshell deployment.
This rule detects attempts to exploit CVE-2025-49706 in SharePoint by observing POST requests to a vulnerable aspx path, which could result in code execution or server compromise. Specifically, it looks for HTTP POST requests to URLs containing '/_layouts/1(5|6)/ToolPane.aspx' and 'DisplayMode=Edit' and 'a=/ToolPane.aspx', combined with a referrer URL ending in '/_layouts/1(5|6)/signout.aspx'. This combination of indicators suggests an attempt to leverage the vulnerability for unauthorized access or code execution.
Detects exploitation attempts against common network edge devices (Cisco, Ivanti, Palo Alto) associated with Salt Typhoon's TTPs for initial access.
This rule detects instances where 'WerFaultSecure.exe' is launched by an unusual parent process. 'WerFaultSecure.exe' is a legitimate Windows error reporting tool, but its execution by non-standard parent processes can indicate malicious activity, such as process injection, credential dumping, or defense evasion. The rule assigns a suspicion score based on the parent process and command-line parameters, filtering for medium to critical risk levels. It also extracts the target PID and identifies suspicious parameters or dump types.
Detects attempts to bypass authentication in Fortra GoAnywhere MFT by exploiting a vulnerability (CVE-2025-10035). This is achieved by sending a crafted GET request to the Unlicensed.xhtml endpoint to trigger an exception and obtain a valid license request token, which is a prerequisite for further exploitation.
This rule detects attempts to exploit CVE-2025-49706 in SharePoint by observing POST requests to a vulnerable aspx path, which could result in code execution or server compromise.
Detects a user certificate that was valid but could not be mapped to a user in a strong way (such as via explicit mapping, key trust mapping, or a SID). This could be a sign of exploitation of elevation of privilege vulnerabilities (CVE-2022-34691, CVE-2022-26931, CVE-2022-26923) that can occur when the KDC allows certificate spoofing by not requiring a strong mapping. Events where the AccountName and CN of the Subject do not match, or where the CN ends in a dollar sign indicating a machine, may indicate certificate spoofing.
Detects the creation of '.library-ms' files by common archive extraction tools or Windows Explorer, which may indicate an attempt to exploit CVE-2025-24054. This vulnerability can lead to automatic outbound SMB or WebDAV authentication requests, potentially exposing NTLMv2-SSP hashes to an attacker without user interaction beyond archive extraction on unpatched systems.
Detects the attempted creation of a file containing 'spinstall0' in specific SharePoint LAYOUTS directories. This activity is a strong indicator of an attempt to exploit the SharePoint Server vulnerability CVE-2025-53770.
This analytic identifies the creation of suspicious .aspx or .ashx files in known drop locations for Exchange exploitation. Specifically, it targets paths associated with HAFNIUM group activity and vulnerabilities like ProxyShell and ProxyNotShell. This activity is a strong indicator of web shell deployment, a common method for persistent access and remote code execution. Successful exploitation could lead to unauthorized access, arbitrary command execution, and privilege escalation within the Exchange environment.
The following analytic identifies attempts to access the Remote ShellServlet on a web server, specifically targeting Confluence servers vulnerable to CVE-2023-22518 and CVE-2023-22515. It leverages web data to detect URLs containing "*plugins/servlet/com.jsos.shell/*" with a status code of 200. This activity is significant as it is commonly associated with web shells and other malicious behaviors, potentially leading to unauthorized command execution. If confirmed malicious, attackers could gain remote code execution capabilities, compromising the server and potentially the entire network.
MCP Remote RCE Via Oauth
YARA-L
Detects potential remote code execution via a malicious OAuth URL in the mcp-remote proxy tool, indicative of CVE-2025-6514 exploitation.
This analytic detects unexpected outbound network connections initiated by known webserver processes such as `httpd.exe`, `nginx.exe`, or `tomcat.exe` to common file sharing or public content hosting services like GitHub, Discord CDN, Transfer.sh, or Pastebin. Webservers are rarely expected to perform outbound downloads, especially to dynamic or anonymous file hosting domains. This behavior is often associated with server compromise, where an attacker uses a reverse shell, webshell, or injected task to fetch malware or tools post-exploitation. The detection leverages Cisco Network Visibility Module flow data, enriched with process context, to identify this highly suspicious behavior.
The analytic detects long URLs containing multiple SQL commands, indicating a potential SQL injection attack. This detection leverages web traffic data, specifically targeting web server destinations with URLs longer than 1024 characters or HTTP user agents longer than 200 characters. SQL injection is significant as it allows attackers to manipulate a web application's database, potentially leading to unauthorized data access or modification. If confirmed malicious, this activity could result in data breaches, unauthorized access, and complete system compromise. Immediate investigation and validation of alerts are crucial to mitigate these risks.
Detects attempts to add sensitive privileges to a process token, a common technique for local privilege escalation. This could be part of an exploit chain following an information disclosure vulnerability like CVE-2025-53136.
Detects the loading of the vulnerable RTCore64.sys driver. This driver is exploited by threats like kkRAT to disable AV/EDR security callbacks as part of a Bring Your Own Vulnerable Driver (BYOVD) attack.
This KQL query is designed to detect a key technique used in the Valley RAT campaign, as detailed in the HexaStrike blog post. The rule focuses on a classic "Bring Your Own Vulnerable Driver" (BYOVD) attack method where an attacker installs a malicious driver or executable as a new service to achieve persistence and high-level privileges.
Detection Logic
The query analyzes DeviceRegistryEvents to identify suspicious changes to Windows services:
Service Path Manipulation: It specifically looks for modifications to the ImagePath registry value. This value tells Windows which file to execute when a service starts.
Suspicious Locations: The core of the detection is a filter for services whose ImagePath points to an unusual location, such as a temporary (%TEMP%) or program data directory (C:\ProgramData). Legitimate system drivers are almost always loaded from the C:\Windows\System32\drivers folder.
Exclusions: To reduce false positives, the rule excludes known legitimate processes, like those related to Microsoft Defender, that might write to these directories.
By identifying services that are configured to load files from untypical paths, this detection rule effectively uncovers a common tactic used by attackers to bypass security controls and establish a foothold on a system.
Detection Logic
The query analyzes DeviceRegistryEvents to identify suspicious changes to Windows services:
Service Path Manipulation: It specifically looks for modifications to the ImagePath registry value. This value tells Windows which file to execute when a service starts.
Suspicious Locations: The core of the detection is a filter for services whose ImagePath points to an unusual location, such as a temporary (%TEMP%) or program data directory (C:\ProgramData). Legitimate system drivers are almost always loaded from the C:\Windows\System32\drivers folder.
Exclusions: To reduce false positives, the rule excludes known legitimate processes, like those related to Microsoft Defender, that might write to these directories.
By identifying services that are configured to load files from untypical paths, this detection rule effectively uncovers a common tactic used by attackers to bypass security controls and establish a foothold on a system.
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