Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
292 detections
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Detects the installation of common remote access tools (such as TeamViewer, AnyDesk, or ScreenConnect) followed by an external network connection within a 10-minute window, which may indicate unauthorized remote access setup.
Detects instances where unauthenticated users or sessions execute privileged 'tools/call' operations within the Grafana MCP dispatcher. This behavior is indicative of potential session spoofing attacks, specifically targeting vulnerabilities similar to CVE-2026-19516, where lack of an Authorization header allows unauthorized access to privileged tool functions.
Detects instances of an mcp-grafana server responding with an HTTP 200 status code to a 'tools/call' request without an Authorization header, indicating potential unauthenticated remote tool execution on a vulnerable or misconfigured server.
Detects instances where unauthenticated users or sessions execute privileged 'tools/call' operations within the Grafana MCP dispatcher. This behavior is indicative of potential session spoofing attacks, specifically targeting vulnerabilities similar to CVE-2026-19516, where lack of an Authorization header allows unauthorized access to privileged tool functions.
Detects instances where unauthenticated users or sessions execute privileged 'tools/call' operations within the Grafana MCP dispatcher. This behavior is indicative of potential session spoofing attacks, specifically targeting vulnerabilities similar to CVE-2026-19516, where lack of an Authorization header allows unauthorized access to privileged tool functions.
Detects a pattern of multiple failed authentication attempts (brute force) from an external IP address followed by a successful authentication event on remote access services such as RDP, VPN, or NTLM. The rule filters for non-private IP addresses and flags successes occurring outside of standard business hours.
Detects instances where unauthenticated users or sessions execute privileged 'tools/call' operations within the Grafana MCP dispatcher. This behavior is indicative of potential session spoofing attacks, specifically targeting vulnerabilities similar to CVE-2026-19516, where lack of an Authorization header allows unauthorized access to privileged tool functions.
Detects instances of an mcp-grafana server responding with an HTTP 200 status code to a 'tools/call' request without an Authorization header, indicating potential unauthenticated remote tool execution on a vulnerable or misconfigured server.
Detects instances of an mcp-grafana server responding with an HTTP 200 status code to a 'tools/call' request without an Authorization header, indicating potential unauthenticated remote tool execution on a vulnerable or misconfigured server.
Detects installation of unauthorized remote-access/RMM software (AnyDesk, RealVNC, Jump Desktop, Chrome Remote Desktop) outside the normal IT-provisioning window combined with a connection to an unfamiliar external IP, consistent with facilitator-maintained device access in PurpleDelta operations.
Detects external scanning and connection attempts against internet-exposed macOS Screen Sharing (port 5900), including mass scanning and coordinated multi-source probing, with an allowlist for known internal scanners.
Detects anomalous access attempts to Netskope Private Access applications, specifically identifying connections from unmanaged devices, access occurring outside of typical business hours, or access from unusual/unexpected geographic locations.
KQL Query
This rule detects when a user's network connection originates from an Autonomous System Number (ASN) that differs from their previously established baseline using Zscaler Digital Experience (ZDX) telemetry. This can indicate anomalous network behavior, such as a user connecting from an unexpected location or a potentially compromised VPN/proxy session.
This rule detects when a user's network connection originates from an Autonomous System Number (ASN) that differs from their previously established baseline using Zscaler Digital Experience (ZDX) telemetry. This can indicate anomalous network behavior, such as a user connecting from an unexpected location or a potentially compromised VPN/proxy session.
This rule detects successful connection events to Palo Alto GlobalProtect gateways originating from known malicious source IP addresses associated with the exploitation of CVE-2026-0257, or connections initiated by hosts using suspicious or default placeholder device names/host IDs. It effectively identifies potential exploitation attempts or unauthorized access to corporate VPN gateways.
This rule detects successful connection events to Palo Alto GlobalProtect gateways originating from known malicious source IP addresses associated with the exploitation of CVE-2026-0257, or connections initiated by hosts using suspicious or default placeholder device names/host IDs. It effectively identifies potential exploitation attempts or unauthorized access to corporate VPN gateways.
This rule monitors for successful GlobalProtect gateway connections from users who have not successfully connected in the preceding 30 days, specifically identifying users connecting with a client fingerprint of 'Microsoft Windows 10 Pro 64-bit'. This behavior is indicative of potential initial access using compromised or new credentials, or specifically flagging suspicious activity patterns associated with specific exploit proof-of-concept client fingerprints.
This rule monitors for successful GlobalProtect gateway connections from users who have not successfully connected in the preceding 30 days, specifically identifying users connecting with a client fingerprint of 'Microsoft Windows 10 Pro 64-bit'. This behavior is indicative of potential initial access using compromised or new credentials, or specifically flagging suspicious activity patterns associated with specific exploit proof-of-concept client fingerprints.
Detects use of default SSL-VPN administrator credentials from external or unusual source geographies after production provisioning, where account-lockout controls are absent — the initial-access vector observed in Gunra intrusions.
Detects anomalous access attempts to Netskope Private Access applications, specifically identifying connections from unmanaged devices, access occurring outside of typical business hours, or access from unusual/unexpected geographic locations.
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