Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule performs a retrospective sweep for indicators of compromise (IOCs) associated with the 'CSuite' phishing and RMM (Remote Monitoring and Management) campaign. It monitors network, DNS, proxy, email, URL click, and file creation telemetry over the past 24 hours to identify interactions with known-malicious IP addresses, domains, URLs, and file hashes related to the campaign.
This rule detects malicious HTTP POST requests attempting a path traversal attack against Grav CMS, specifically targeting the __unique_form_id__ parameter. The rule looks for directory traversal sequences ('..') following the parameter, which is characteristic of attempts to read sensitive files outside the intended web directory.
This rule detects malicious HTTP POST requests attempting a path traversal attack against Grav CMS, specifically targeting the __unique_form_id__ parameter. The rule looks for directory traversal sequences ('..') following the parameter, which is characteristic of attempts to read sensitive files outside the intended web directory.
This rule detects potentially malicious network activity by monitoring for specific query parameters ('bmodule', 'smodule', 'lmodule', 'task', 'upload.php') in web requests or communication with a specific known-malicious IP address ('62.60.226.50'). This pattern is characteristic of C2 (Command and Control) traffic or unauthorized file staging/upload operations.
Detects HTTP beaconing and command-and-control (C2) communication patterns associated with the Exvicy malware family. This includes heartbeat polling, victim fingerprinting registration, and CAPTCHA handling over HTTP GET and POST requests to the '/api.php' endpoint.
Detects anomalous POST requests to the RubyGems webhook API endpoint (/api/v1/web_hooks) containing specific indicators ('A000' or 'ZZEND') in the request body, which suggests the misuse of legitimate webhooks for chunked data exfiltration.
Detects HTTP GET requests to Cloudflare Pages subdomains (.pages.dev) ending in '/File_download', often used as a distribution point for malicious HTA (HTML Application) or WSF (Windows Script File) payloads in spearphishing campaigns.
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.
This rule monitors network connections initiated by common web browsers (chrome.exe, msedge.exe, brave.exe) to known domains associated with a specific VPN proxy service or subscription-based proxy farm infrastructure. The rule flags endpoints communicating with URLs involved in proxy beaconing, fallback hosting, and subscription API calls.
Detects network connection attempts to known typosquatted domains (thecovnresation.com/net) commonly associated with the CLEANGULP malware beaconing activity, specifically targeting the /beacon/pre-register URI path.
Detects network connection attempts to known typosquatted domains (thecovnresation.com/net) commonly associated with the CLEANGULP malware beaconing activity, specifically targeting the /beacon/pre-register URI path.
Detects outbound HTTP POST requests from an AI agent runtime environment to known external paste-sites, webhook providers, or staging services. This behavior is indicative of a compromise where the AI agent is being manipulated to exfiltrate sensitive API keys, tokens, or configuration secrets to an attacker-controlled endpoint.
Detects outbound HTTP requests to 'third-party.com', a domain identified as being associated with 'ClickFix' social engineering lures, which are commonly used to deceive users into executing malicious scripts or downloading payloads.
Detects an account takeover chain where a device loads a malicious JavaScript component ('load-addon.js') in a browser session, followed by repeated attempts to bypass bot detection mechanisms (targeting Google's 'errors/robot.png') as the payload attempts to force authentication challenges or password resets.
Detects anomalous access patterns to machine learning model inference endpoints, including unauthorized access attempts such as credential failures, scope violations, and quota exhaustion, indicating potential misuse or compromise of private model APIs.
Detects HTTP requests directed at edge appliances (FortiOS/FortiProxy, SonicWall, Cisco ASA) that match known CVE-associated URI paths, alongside successful administrative authentication to management or VPN interfaces originating from external source IP addresses. This rule is designed to identify potential initial access via vulnerability exploitation or unauthorized administrative login to critical infrastructure.
Detects suspicious mobile-device HTTP traffic patterns indicative of 'quishing' (QR code phishing). The rule identifies mobile HTTP GET requests (iPhone, Android, Mobile Safari, iPad) that lack a Referer header, followed by HTTP POST requests to common credential entry URI patterns (e.g., /login, /signin) over the same protocol, which is a behavioral indicator of a user being redirected from a scanned QR code to a malicious phishing landing page.
Detects unauthorized attempts to access SharePoint's WebPartPage ToolPane and Gallery endpoints via anonymous web requests. This pattern, characterized by the 'DisplayMode=Design' query parameter and suspicious markup in the request body, is indicative of exploitation attempts targeting vulnerable SharePoint installations to execute arbitrary code or bypass authentication mechanisms.
Detects automated API exploitation attempts, specifically Broken Object Level Authorization (BOLA) scanning. The rule triggers when a single source IP or API token exhibits high-frequency request patterns (5+ requests per second) against resource endpoints with sequentially incrementing IDs. It specifically correlates a spike in 401/403 authorization failures followed by a small count of 200 successes, indicating a potential successful bypass of authorization controls.
Detects suspicious HTTP requests directed at SharePoint applications containing a malformed Register directive. The rule identifies attempts to leverage the 'publishingribbon' Tagprefix combined with unauthorized namespaces (e.g., System.Xaml, System.Windows.Data) to bypass the EditingPageParser.InitializeRegisterTable safelist check, a common technique for SharePoint remote code execution.
This rule detects network traffic patterns associated with the ARToken phishing campaign, specifically identifying access to lure pages hosted on 'workers.dev' domains with 'docviewer' in the hostname and 'turnstile' challenge responses in the HTTP body, which is used for anti-analysis/evasion.
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