Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects browser connections to the Bing Search by Image endpoint, which can be exploited as a Server-Side Request Forgery (SSRF) proxy to bypass Content Security Policies (CSP) and exfiltrate data, as seen in the SearchLeak attack. The rule specifically looks for connections to 'bing.com/images/searchbyimage' that also include the 'imgurl=' or 'imgurl%3d' parameter, indicating an attempt to use the server-side fetch functionality.
Correlates the completion of the OpenClaw theft routine with a network connection to Discord Webhooks to notify the threat actor. Specifically, it looks for network connections to discord.com/api/webhooks initiated by 'python.exe'.
This rule monitors web browser processes (msedge.exe, chrome.exe) for two distinct behaviors: performing network connections to known command and control (C2) or exfiltration domains, and accessing sensitive browser files such as cookies, login data, or web data files.
This rule detects DNS requests initiated by the Microsoft Edge browser (msedge.exe) to a specific list of domains identified as potentially malicious or associated with unauthorized activity. It monitors and aggregates these requests to provide visibility into potential command and control or unauthorized communication attempts.
Detects the use of PowerShell to invoke or interact with 'cloudflared', a tool used to create secure tunnels to Cloudflare. This behavior is often associated with the deployment of malicious infrastructure or remote access tunnels for command and control purposes.
This rule monitors DNS query events to detect internal systems attempting to resolve the domain 'bluegraintours.com', which is indicative of potential command and control (C2) communication or malware activity.
Detects BGP route lookups used to map target IP address blocks
Detects the installation of a Microsoft Edge extension followed by an outbound network connection to known StegoAd C2 infrastructure after a 3-5 day dormancy period, a behavior characteristic of time-gated sandbox evasion.
Detects unusual SSH activity originating from or involving Cisco vManage systems, specifically monitoring outbound SSH connections to internal network segments (10.0.0.0/8) or the execution of SSH processes with command-line arguments indicative of management tasks (vsmart, vbond).
Detects network connections to the typosquatted domain 'perplexity-ai.online', associated with a malicious browser extension used for data exfiltration. Additionally, it detects the creation or modification of 'background.js' files within common web browser extension directories, which is a common persistence mechanism for malicious extensions.
This rule detects installation artifacts, configuration file modifications, registry changes, and network activity associated with a specific malicious Chromium extension ('flkebkiofojicogddingbdmcmkpbplcd') that hijacks the default browser search provider via declarativeNetRequest rules and communicates with a typosquatted domain 'perplexity-ai.online'.
Detects potentially unauthorized or malicious behavior associated with the RustDesk remote access tool. The rule monitors for unsigned screen capture attempts, spawning of shell or scripting processes, cross-process input injection, and network communication over non-standard or unexpected ports.
Detects artifacts and behaviors associated with a malicious Chromium extension identified as 'Search for perplexity ai' (extension ID: flkebkiofojicogddingbdmcmkpbplcd). The rule monitors for unauthorized extension installation, registry modifications to the browser's default search provider settings pointing to a suspicious domain (perplexity-ai.online), and outbound browser network traffic or DNS queries directed toward the same domain for potential data exfiltration.
Detects outbound network traffic from common web browsers (Chrome, Edge, Brave, etc.) to the typosquatted domain 'perplexity-ai.online'. This rule identifies behavior associated with a malicious browser extension ('Search for perplexity ai') that exfiltrates keystrokes and search queries captured via the browser's Omnibox functionality to an attacker-controlled server.
Detects anomalous SSH lateral movement originating from the Cisco SD-WAN Manager (vManage) to other control plane components (vSmart/vBond). This rule correlates network connections on port 22 with successful SSH logins using privileged or service-related accounts, which is indicative of potential post-exploitation activity or pivoting within an SD-WAN control plane environment.
This rule detects network connections to a list of domains identified as associated with phishing activities associated with Crimson Kingsnake. Monitoring these connections can help identify compromised systems or users attempting to access malicious sites.
Detects modifications to the 'SSLKEYLOGFILE' environment variable in the Windows Registry. This variable is often used by applications like web browsers to log SSL/TLS session keys to a file, which can then be used to decrypt encrypted network traffic. Malicious actors might enable this to capture sensitive data.
This rule detects potential command and control (C2) activity associated with a known npm RAT, identified by network connections to specific C2 infrastructure (95.216.92.207:8080) or DNS resolution of 'nvidiadriver.net'. The rule specifically flags these events when performed by common execution tools like 'python.exe' or 'chost.exe', or when the process image is running from a temporary directory, which is a common persistence or execution indicator for malware.
This rule monitors for suspicious activity associated with Flowise Model Context Protocol (MCP) implementations, specifically detecting environment variable bypasses using Node.js --require, potential Server-Side Request Forgery (SSRF) attempts targeting internal infrastructure and cloud metadata services, and the creation of known proof-of-concept (PoC) artifacts.
Detects indicators of a specific malicious browser extension, including file-system artifacts (extension directory placement), registry-based persistence mechanisms, and network communication to associated command-and-control (C2) or onboarding domains. The rule specifically monitors for known malicious identifiers related to a typosquatted domain campaign impacting popular web browsers.
This rule detects unauthorized attempts to extract credentials from the Veeam Backup and Replication PostgreSQL database. It identifies malicious activity involving the use of PowerShell to interact with the database, including direct psql.exe command line execution, PowerShell scripts referencing sensitive database keywords, WMI-spawned PowerShell processes, and network connections to the PostgreSQL service port (5432).
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