Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
461 detections
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This rule detects network traffic (DNS, TLS, HTTP, and TCP) originating from internal assets to known infrastructure associated with the QTFY proxy botnet/C2 framework. It identifies communication with specific C2 domains, proxy management systems, and associated malicious IP ranges.
This rule detects network connections and DNS queries associated with the QTFY proxy infrastructure, including specific domains, known proxy management system IPs, and suspicious IP ranges. This behavior is indicative of command and control (C2) activity utilizing proxy services to obfuscate traffic.
This rule detects network connections and DNS queries associated with the QTFY proxy infrastructure, including specific domains, known proxy management system IPs, and suspicious IP ranges. This behavior is indicative of command and control (C2) activity utilizing proxy services to obfuscate traffic.
Detects a multi-stage sequence of network connections to Microsoft cloud services (login.microsoftonline.com, graph.microsoft.com, and data exfiltration endpoints like sharepoint.com) consistent with Storm-3121/Storm-3032 adversary activity. This rule is designed for IDS/IPS monitoring of traffic patterns indicating authentication, reconnaissance, and potential data exfiltration from Microsoft 365 environments.
Detects post-exploitation persistence artifacts on Windows endpoints managed by N-able N-central consistent with abuse of CVE-2026-18577, including a new Windows service named Cloudflared, registry Services key creation for Cloudflared, a file named svchost.exe written under a user's Documents folder, or process execution of cloudflared.exe or a Documents-located svchost.exe.
Detects the execution of Python scripts explicitly named 'socks5.py'. This is a common pattern used by adversaries to establish proxying capabilities for command and control or to tunnel traffic through a compromised host.
Detects network handshake patterns associated with the Fast Reverse Proxy (FRP) client, specifically identifying outbound traffic containing identifiers used in common FRP reverse tunnel configurations. This behavior is indicative of unauthorized remote access tools or tunneling software establishing a connection to an external command-and-control server.
Detects a single Azure AD identity successfully authenticating from three or more unique IP addresses within a 24-hour window. This behavior is indicative of infrastructure rotation by threat actors, such as those observed in Storm-3121/Storm-3032 campaigns, intended to evade network-based detection and conditional access controls during reconnaissance or exfiltration phases.
Detects post-exploitation persistence artifacts on Windows endpoints consistent with abuse of CVE-2026-18577.
This rule detects network traffic (DNS, TLS, HTTP, and TCP) originating from internal assets to known infrastructure associated with the QTFY proxy botnet/C2 framework. It identifies communication with specific C2 domains, proxy management systems, and associated malicious IP ranges.
This rule detects potentially malicious use of residential proxies by monitoring for outbound HTTP CONNECT requests originating from consumer devices in the internal network. The use of HTTP CONNECT is a common method for establishing tunnels through proxies to mask C2 communication or facilitate unauthorized access, often associated with botnets or malicious proxy networks.
This rule detects potentially malicious use of residential proxies by monitoring for outbound HTTP CONNECT requests originating from consumer devices in the internal network. The use of HTTP CONNECT is a common method for establishing tunnels through proxies to mask C2 communication or facilitate unauthorized access, often associated with botnets or malicious proxy networks.
This rule detects the execution of processes associated with CLI proxy routers (such as CLIProxyAPI or router-for-me) that establish network connections to multiple AI provider APIs (e.g., Anthropic, OpenAI, Google Gemini) within a short window. This pattern is indicative of efforts to bypass rate-limiting or allowlisting mechanisms commonly used by corporate environments to control and audit AI service interactions.
Detects outbound network traffic (TCP and TLS) from internal hosts to known command and control (C2) infrastructure associated with the FamousSparrow threat actor and their SparroWocky malware suite.
KQL Query from file: Cloudflared Persistence & svchost.exe Masquerading Post-N-central CVE-2026-18577
This rule detects network traffic directed to the subdomain 'testing.perplexity.com', which is identified as being associated with the BragJack campaign. This specific subdomain is leveraged by the campaign to facilitate browser session redirect bypasses, indicative of an attempt to intercept or manipulate user sessions.
This rule detects network traffic directed to the subdomain 'testing.perplexity.com', which is identified as being associated with the BragJack campaign. This specific subdomain is leveraged by the campaign to facilitate browser session redirect bypasses, indicative of an attempt to intercept or manipulate user sessions.
This rule detects command-and-control (C2) communication patterns associated with the 'soraki-proxy.workers.dev' domain, a Cloudflare Workers-hosted proxy service. Additionally, it identifies potential malicious mTLS implants by flagging non-standard TLS handshakes that use self-signed or auto-generated certificates missing standard organization (O) fields in the subject DN.
This rule detects command-and-control (C2) communication patterns associated with the 'soraki-proxy.workers.dev' domain, a Cloudflare Workers-hosted proxy service. Additionally, it identifies potential malicious mTLS implants by flagging non-standard TLS handshakes that use self-signed or auto-generated certificates missing standard organization (O) fields in the subject DN.
Detects post-exploitation persistence artifacts on Windows endpoints consistent with abuse of CVE-2026-18577.
Detects anomalous network traffic patterns where internal assets interact with Microsoft Graph API and Entra ID (login.microsoftonline.com) authentication endpoints from distinct external destination IPs within a short time window. This behavior is indicative of potential attacker infrastructure rotation during C2 or post-authentication phases.
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