Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects suspicious process command lines that indicate potential tunneling activity. It looks for commands containing 'tunnel', '--url', and '--logfile', while excluding legitimate 'cloudflared.exe' processes. This pattern is often used by adversaries to establish covert communication channels or exfiltrate data.
Detects the execution of SSH or Plink processes with command-line arguments indicating local, remote, or dynamic port forwarding. Adversaries may use port forwarding to tunnel traffic through a compromised host to bypass network segment restrictions or access internal resources.
Detects Content Security Policy (CSP) violation reports or network traffic containing references to 'netdna-ssl.com' or 'netdna-cdn.com'. These hostnames are legacy CDN domains that have been re-registered, presenting a significant supply chain risk where malicious content could be injected into web applications loading resources from these domains.
This rule detects activities associated with credential dumping, specifically targeting techniques that abuse the Directory Replication Service (DRS) protocol, such as DCSync or the use of tools like secretsdump. It monitors both process execution command lines and network traffic for keywords indicative of these credential extraction behaviors, which are commonly used by attackers to obtain domain credentials.
Detects an AI agent performing outbound network connections to the stitch-design.ai domain. This behavior is indicative of a malicious AI agent attempting to fetch dynamically loaded execution instructions at runtime to evade static analysis during security vetting processes.
Detects anomalous network scanning behavior from a Qualys scanner towards Domain Controller ports. The rule monitors CommonSecurityLog and NetworkSessions for high volumes of connection attempts (more than 50 within one hour) targeting critical Active Directory ports (88, 135, 389, 445, 636, 3268, 3269). This activity may indicate a scanner configuration error, a compromised scanner, or an adversary attempting to map the environment while masquerading as a security tool.
Detects high-volume, multi-port connections from a single source to a domain controller, which is indicative of vulnerability scanning activity such as Nessus. The rule monitors for a large volume of connection attempts across multiple sensitive ports (e.g., 88, 135, 389, 445, 464, 636, 3268, 3269) within a short 5-minute window.
This rule detects high-volume connection requests to LDAP services (default ports 389, 636, 3268, 3269). A high number of connections from a single source to a destination within a short time window may indicate automated reconnaissance, LDAP enumeration, or brute-force attempts against domain services.
Identifies outbound C2 connections to domains generated by MLTBackdoor DGA.
This rule detects outgoing network connections from the IIS worker process (w3wp.exe) to public-facing URLs that match common Microsoft Office WOPI (Web Application Open Platform Interface) request patterns, but are directed to domains other than trusted Microsoft-affiliated infrastructure. This behavior can be indicative of a Server-Side Request Forgery (SSRF) attempt, where an attacker tries to coerce the server into making unauthorized requests to external resources.
This rule detects suspicious DNS queries originating from VBScript (wscript.exe or cscript.exe) processes. It specifically filters out common legitimate domains like Microsoft, Windows, and Google to reduce noise, aiming to identify potential phishing or malware activity leveraging VBScript for network communication.
This rule monitors DeviceNetworkEvents for outbound network connections to a specific IP address (142.111.194.73), destination port (8640), or URL path (/dj5FZEiLnA/) associated with the 'GiftedCrook' command and control infrastructure.
This rule monitors DeviceNetworkEvents for outbound network connections to a specific IP address (142.111.194.73), destination port (8640), or URL path (/dj5FZEiLnA/) associated with the 'GiftedCrook' command and control infrastructure.
Detects network connection activity on common C2 ports from processes executing outside of standard system directories. The rule filters out known system paths on macOS and identifies processes that establish multiple connections to non-private IP addresses, assigning a risk score based on the volume of connections and the duration of the activity to identify potential command and control (C2) beaconing behavior.
Detects suspicious activity indicative of CryptoBandits malware, specifically JScript stealer polling the clipboard and beaconing actions. This rule identifies instances where wscript.exe or cscript.exe spawn clip.exe (for clipboard access), curl.exe (for C2 communication via Tor SOCKS5 with specific keywords like 'REPL', 'SEED', 'PKEY'), or cmd.exe within a staging directory like 'Public\Documents'. It also looks for specific filenames in the command line such as 'exefu.js', 'ofolu.js', 'words.txt', or 'ugate.exe'.
Detects DNS queries and network connections to 'netdna-ssl.com' and its subdomains, as well as specific IP addresses (104.21.72.58, 172.67.175.240) associated with the re-registered domain. This domain was re-registered by a third party in July 2025 and now resolves legacy WP Engine CDN hostnames, creating a potential supply chain risk.
Detects suspicious WebSocket connections initiated by AutoGen Studio processes to localhost on ports 8080 or 8081, indicative of the AutoJack exploit chain bypassing loopback trust boundaries. This rule specifically looks for Python processes associated with 'autogenstudio' making these connections or for network events where the RemoteUrl contains 'ws://localhost', 'ws://127.0.0.1', '/api/mcp/ws/', or 'server_params='.
This rule detects Content Security Policy (CSP) violations related to 'netdna-ssl.com' or 'wpengine.netdna-ssl.com' domains. Specifically, it looks for violations where the blocked URI contains 'netdna-ssl.com' or the violated directive is 'script-src', 'font-src', or 'connect-src'. This could indicate attempts to inject malicious content or bypass CSP protections.
This rule detects suspicious network activity related to Tailscale mesh VPN and DuckDNS, specifically looking for resolutions of 'tailscale.com', 'wawsenti.duckdns.org', or 'duckdns.org' via DNS events, and network flow to known C2 IPs (217.154.217.139, 217.154.162.45), or traffic on UDP port 41641 within the Tailscale IP range (100.64.0.0/10). It also flags connections to 'wawsenti.duckdns.org' or any 'duckdns.org' domain in network flow data. The rule aims to identify potential C2 communications or unauthorized use of VPN services.
Detects suspicious network connections originating from processes within the AppData\Roaming folder to common web ports (80, 443), or any connection to the domain 'birdeemusic.com'. This pattern is often associated with malware establishing command and control (C2) communication or data exfiltration, especially when originating from non-browser processes.
Detects Python processes executing from suspicious locations like AppData or Temp folders that also establish outbound network connections. This behavior can indicate the execution of malicious Python scripts, often associated with malware, initial access, or command and control activities.
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