Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects outbound HTTP POST requests where the Content-Length is at least 10MB and the Content-Type header indicates the transfer of archived data (zip or x-tar). This pattern is often associated with the staging and exfiltration of compressed sensitive data from an internal host to an external network destination.
Detects HTTP requests attempting to access sensitive internal IP addresses (RFC-1918) or cloud metadata services (e.g., 169.254.169.254) which are common indicators of Server-Side Request Forgery (SSRF) exploitation attempts.
This rule detects network traffic indicative of PsExec lateral movement, specifically identifying the authentication or access to the hidden 'ADMIN$' network share followed by the transfer or execution of the 'PSEXESVC' service binary, a hallmark of the PsExec tool.
Detects repeated SSH connection attempts to a server over a short duration (10+ attempts in 60 seconds), which is characteristic of credential stuffing or brute-force password guessing attacks against the SSH service.
Detects network traffic (DNS, TLS/HTTPS) communicating with the secondary hosting domain 'fileget.loseyourip.com' specifically attempting to retrieve potential payloads mimicking legitimate software (e.g., OBS Studio installer).
Detects outbound HTTP requests to 'pastebin.com' retrieving raw content, a technique commonly used by Ousaban malware to fetch command-and-control (C2) configurations from legitimate paste sites.
This rule detects outbound FTP traffic containing the 'STOR' command, which is used in the FTP protocol to upload files to a remote server. This behavior is a common indicator of unauthorized data exfiltration.
Detects DNS queries containing unusually long subdomains (50+ characters) encoded in Base64, which is a common technique used for command-and-control (C2) communication or data exfiltration via DNS tunneling.
Detects the transmission of a Metasploit Meterpreter stage over HTTP, identified by an application/octet-stream response containing the DOS MZ header signature.
Detects HTTP requests containing a UNION SELECT pattern in the URI query string, which is a common indicator of a SQL injection attempt aimed at exfiltrating data or manipulating database queries.
Detects anomalous DCOM RPC bind requests on port 135 targeting WMI-related interfaces, which is a common indicator of lateral movement using Windows Management Instrumentation (WMI) over DCOM.
This rule monitors network traffic over the Telnet protocol (TCP port 23) for patterns indicative of Mirai botnet propagation. It identifies sequences of characters commonly used in Mirai brute-force attempts to guess default credentials (e.g., 'admin' followed by 'password'). The rule utilizes a threshold-based detection filter to trigger only when multiple such attempts are observed from a single source within a 60-second window, helping to filter out individual noise and focus on active scanning behavior.
This rule detects HTTP directory traversal attempts by inspecting incoming URI requests for common path traversal sequences such as '../', '..%2F', '..%2f', '..%5C', or '..%5c'. Attackers use these sequences to escape the web root directory and access unauthorized files on the server.
Detects suspicious network activity originating from the InstallUtil.exe process. InstallUtil is a legitimate Windows .NET utility that can be abused as a LOLBin (Living-off-the-Land Binary) to proxy the execution of malicious payloads, potentially bypassing application control mechanisms.
This rule detects potential lateral movement attempts using Windows Remote Management (WinRM) by monitoring for specific WSMan SOAP protocol headers in HTTP traffic. It specifically looks for POST requests to the WSMan endpoint that contain suspicious keywords like 'winrs', 'MSRPC', or 's:Envelope', which are commonly associated with remote command execution via winrs or PSSession.
Detects HTTP GET requests for .msc (Microsoft Management Console) files, which can be leveraged as part of an attack chain to abuse the mmc.exe binary for proxy execution of malicious configurations.
Detects the transmission of a Portable Executable (PE) file header ('MZ' and 'PE' magic bytes) within an HTTP response stream, which is a common indicator of a staged file download or process injection payload being delivered over the network.
Detects SMB traffic patterns containing commands indicative of file obfuscation or permission tampering, specifically the use of 'attrib' to set hidden or system attributes, 'icacls' to deny access to files, or PowerShell execution with the '-WindowStyle Hidden' argument.
Detects remote system shutdown attempts initiated via the MSRPC winreg named pipe over SMB. This behavior is indicative of an attacker attempting to shut down or reboot a target system remotely to interrupt availability, often as a prelude to or consequence of destructive actions.
This rule detects potential phishing or cloaking activity where a web server response contains JavaScript logic that checks the visitor's User-Agent string using 'navigator.userAgent' and conditionally redirects the user via 'window.location'. This technique is commonly used to redirect specific targets (e.g., mobile devices or specific browsers) to malicious sites while serving benign content to others, often for credential harvesting or malware delivery.
This rule detects HTTP POST requests containing common credential field names directed at files ending in .php (such as login.php, result.php, or index.php), which is highly characteristic of phishing kits used to harvest credentials.
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