Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects HTTP traffic containing a User-Agent string associated with the NetSupport Manager remote access tool. This activity is indicative of the tool being used for unauthorized remote access or as a C2 channel, often seen in the context of the ClickFix campaign.
Detects the use of the 'diagnose sniffer packet' command on a FortiGate network device, which is indicative of an administrator or attacker performing network traffic capture and analysis directly from the device's management interface.
This rule detects attempts to exploit a Server-Side Request Forgery (SSRF) vulnerability in Oracle PeopleSoft by targeting the '/PSIGW/HttpListeningConnector' endpoint. The detection looks for malicious URI patterns and request bodies containing internal-only network indicators such as loopback addresses (127.0.0.1, localhost), link-local addresses (169.254.169.254), or local file access attempts (file://), which are indicative of SSRF exploitation attempts.
Detects anomalous, oversized IKEv1 Phase 1 packets targeting Check Point VPN devices, indicative of an exploitation attempt for CVE-2026-50751.
Detects high-frequency DNS queries for long, random-looking subdomains that result in NXDomain responses, a behavioral indicator of malware using Domain Generation Algorithms (DGA) for command-and-control beaconing.
Detects a specific network handshake pattern indicative of the Cavern Manticore malware establishing a SOCKS5-over-WebSocket tunnel. The rule monitors for a WebSocket upgrade request followed by the initial SOCKS5 connection authentication byte sequence.
Detects outbound HTTP POST requests to a /gallery URI endpoint, which is associated with Cavern Manticore C2 beacons. The detection logic inspects the HTTP request body for a specific Base64-encoded pattern following XOR 0x48 encoding, indicating potential command-and-control communication.
Detects attempts to exploit Microsoft Exchange vulnerabilities (CVE-2021-34473, CVE-2021-34523, CVE-2021-31207), collectively known as ProxyShell. The rule monitors inbound HTTP requests targeting the /autodiscover/ endpoint with specific path traversal patterns and malicious components used to stage web shells or execute arbitrary commands.
Detects an unusually large data transfer (greater than 5MB) from an internal MySQL server to an external network, which may indicate unauthorized database record exfiltration or data dumping.
Detects outbound network communication to an IP address (64.20.53.230) identified as a staging server associated with the JadePuffer activity. This activity involves potential data exfiltration following self-narrated deletion payloads.
Detects incoming HTTP POST requests to the /PSEMHUB/hub endpoint on Oracle PeopleSoft servers, which is indicative of exploitation attempts related to the Server-Side Request Forgery (SSRF) vulnerability identified as CVE-2026-35273.
Detects anomalous, oversized IKEv1 Phase 1 packets targeting Check Point VPN devices, indicative of an exploitation attempt for CVE-2026-50751.
Detects attempts to exploit the Log4Shell vulnerability (CVE-2021-44228) by identifying JNDI lookup strings (e.g., ${jndi:ldap://, ${jndi:rmi://, ${jndi:dns://) within HTTP request headers, a technique used to trigger remote code execution in vulnerable Java applications using the Log4j library.
This rule detects attempts to exploit a Server-Side Request Forgery (SSRF) vulnerability in Oracle PeopleSoft by targeting the '/PSIGW/HttpListeningConnector' endpoint. The detection looks for malicious URI patterns and request bodies containing internal-only network indicators such as loopback addresses (127.0.0.1, localhost), link-local addresses (169.254.169.254), or local file access attempts (file://), which are indicative of SSRF exploitation attempts.
This rule detects internal network traffic communicating with the Telegram Bot API endpoint 'api.telegram.org' using the 'getUpdates' method. This pattern is commonly used by malware for C2 polling to retrieve commands from an adversary-controlled Telegram bot.
This rule detects attempts to exploit the Log4Shell vulnerability (CVE-2021-44228) by monitoring HTTP headers for malicious JNDI lookup strings. Attackers use this injection to trigger the JNDI mechanism to connect to a remote server (LDAP, RMI, DNS) and download malicious Java classes, leading to remote code execution.
Detects network traffic attempting to exploit the SMBv1 vulnerability (CVE-2017-0144), commonly known as EternalBlue. The rule monitors for specific SMB Trans2 SESSION_SETUP packet structures associated with this remote code execution exploit.
Detects network traffic containing the Java Serialization magic header 'AC ED 00 05'. This sequence is commonly used to initiate Java deserialization attacks, which can lead to remote code execution if the application insecurely deserializes untrusted data.
This rule detects outgoing TCP traffic that initiates a SOCKS5 handshake (indicated by the byte sequence |05 01 00|) on destination ports other than standard web ports (80, 443, 8080, 8443). This behavior is characteristic of TOR client traffic attempting to establish an anonymous connection to an external TOR relay or node via non-standard network ports.
Detects network traffic containing a potentially malicious Microsoft Excel (.xlsx) OOXML file being downloaded. The rule identifies the presence of the 'Content-Disposition' header with an '.xlsx' extension, combined with a file signature matching the ZIP format (often used by OOXML files) and a file size exceeding 500KB, which may indicate an attempt to exploit CVE-2025-60727.
Detects anomalous ICMP Echo Request packets (type 8, code 0) that contain payloads exceeding 64 bytes. ICMP Echo requests with large, non-standard payloads are a classic indicator of ICMP tunneling, which can be used to bypass network firewalls and encapsulate non-ICMP traffic for command and control (C2) or data exfiltration. The rule includes a threshold to reduce noise by alerting only when multiple such packets are seen from the same source.
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