Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
1,217 detections
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Detects the creation of web scripts (aspx, php, jsp) in typical web server directories followed by suspicious shell activity (cmd, powershell, or shell execution) originating from web server processes within a 10-minute window. This behavior is indicative of a web shell being dropped and subsequently utilized for command execution.
Detects SQL injection exploitation attempts against MOVEit Transfer targeting the CVE-2023-34362 vulnerability, followed by the deployment and subsequent interaction with the 'human2.aspx' webshell associated with Cl0p ransomware mass-exploitation campaigns.
Detects the loading of WPF/XAML-related assemblies (PresentationFramework.dll, System.Xaml.dll, or PresentationCore.dll) by the SharePoint web server process (w3wp.exe). This behavior is highly irregular for typical SharePoint web worker processes and may indicate an exploitation attempt targeting deserialization vulnerabilities leading to remote code execution.
Detects the creation or renaming of files to a .aspx extension within specific web application directories (member file-upload). The rule specifically filters for file operations initiated by the IIS worker process (w3wp.exe) and requires a non-zero file size, identifying potential web shell deployment attempts.
Detects the creation or renaming of files to a .aspx extension within specific web application directories (member file-upload). The rule specifically filters for file operations initiated by the IIS worker process (w3wp.exe) and requires a non-zero file size, identifying potential web shell deployment attempts.
This rule detects potential post-exploitation activity where a web server process spawns a command shell, executes system discovery commands, and immediately initiates an outbound network connection. This behavior is indicative of a web-based exploit leading to interactive command execution and subsequent C2 communication.
Detects the execution of common enumeration tools and commands often associated with ransomware-precursor behavior. This includes the use of AdFind, dsquery, net.exe, and nltest for domain account, group, and trust discovery, as well as the execution of BloodHound/SharpHound collection activities.
This rule detects potential credential stuffing attacks by monitoring high-volume authentication attempts against web application login endpoints. It specifically flags scenarios where a high number of unique source IP addresses interact with a login endpoint (e.g., /login, /signin) within a short window, which is characteristic of automated, distributed credential stuffing tools using proxy networks to rotate IPs.
Detects incoming web server requests containing suspicious, URL-encoded SQL injection patterns indicative of automated probing or exploitation attempts, such as UNION SELECT, boolean-based injection fragments, and comment sequences.
Detects HTTP requests containing common web exploit patterns (SQLi, XSS, RCE) that exhibit characteristics of automated, mutating payload generation often utilized in AI-assisted fuzzing or vulnerability scanning tools. The rule monitors for encoded, obfuscated, or highly varied payload syntax within URI query strings.
Detects potential exploitation attempts targeting the vulnerable Oracle PeopleSoft PSEMHUB Environment Management Hub endpoint (associated with CVE-2026-35273 and UNC6240). The rule identifies suspicious bursts of POST requests where the URI path uses percent-encoding or mixed-case characters to evade Web Application Firewall (WAF) filtering.
Detects anomalous SOAP requests to the SharePoint WebPartPages.asmx endpoint specifically targeting the 'GetWebPartPageConnectionInfo' method. This pattern is associated with exploitation attempts against SharePoint vulnerabilities.
Detects the execution of 'sqlcmd.exe' when spawned by web application pools (w3wp.exe) or general command shell (cmd.exe) processes that do not appear to be related to authorized database administration or IIS appcmd activity.
Detects the use of 'findstr' or PowerShell to query sensitive configuration files (such as web.config or applicationHost.config) for credential-related keywords like 'connectionString', 'AccountKey', or 'machineKey'. This behavior is indicative of an adversary attempting to harvest credentials or sensitive configuration data stored in cleartext on the filesystem.
Detects the Microsoft IIS worker process (w3wp.exe) spawning common command-line shells (cmd.exe or powershell.exe) and executing discovery-related commands. This is highly indicative of potential web shell activity where an adversary uses an existing web application vulnerability to gain remote code execution.
Detects the creation of an ASPX file within a member file upload directory, followed immediately by the execution of 'cmd.exe' by the 'w3wp.exe' web server process. This behavior is indicative of a web shell being uploaded and used to execute arbitrary commands on the server.
Detects reconnaissance activity on IIS servers where the worker process (w3wp.exe) spawns appcmd.exe or PowerShell to list websites, virtual directories, or application pools. This pattern is indicative of an attacker performing post-exploitation discovery after establishing a web shell.
Detects instances where a Microsoft IIS worker process (w3wp.exe) executes commands such as 'findstr', 'Get-Content', or 'Select-Xml' to scan configuration files (e.g., applicationHost.config, web.config) or source code files (e.g., App_Code/*.cs) for sensitive information like passwords, connection strings, or API keys. This behavior is indicative of credential harvesting by an attacker using a webshell or compromised IIS process.
Detects the creation or renaming of files to a .aspx extension within specific web application directories (member file-upload). The rule specifically filters for file operations initiated by the IIS worker process (w3wp.exe) and requires a non-zero file size, identifying potential web shell deployment attempts.
Detects when common web server worker processes spawn command-line tools or shell interpreters, which is a common post-exploitation technique used by web shells like Godzilla to execute arbitrary commands.
Detects the modification of Microsoft IIS configuration to disable HTTP logging using the appcmd.exe utility. This technique is often used by adversaries to impair security monitoring and evade detection after compromising a web server.
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