Detections

Explore public detection logic contributed by the community across SIEM and rule languages.

3,989 detections

Detects unauthorized devices or processes attempting to communicate with the Telegram Bot API (/sendMessage or /sendDocument) and monitors for credential-related terms within the request metadata. This often indicates the use of Telegram as a command-and-control (C2) channel for data exfiltration or credential theft.
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Ankit Mehta@Secvyn
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SlimKQL
2 months ago
203
Detects the presence of the known Cyclops Blink implant by file hash (SHA256) on an endpoint, followed by a network connection to associated C2 infrastructure within one hour, aligning with typical implant beaconing or file transfer behavior.
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Ankit Mehta@Secvyn
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Detection & Hunting Community
2 months ago
101
Detects execution patterns associated with 'NinjaMare' style malware, where a process masquerading as a browser (e.g., tenbrowser.exe, fireflybrowser.exe) performs an external IP geolocation lookup followed by suspicious registry or file modifications indicative of browser hijacking or extension installation within a five-minute window.
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Arnold Chan@slaz
Defender - KQL
2 months ago
107
This rule detects network communication (via DNS queries, web logs, or device network events) with a list of known malicious domains associated with Command and Control (C2) activity.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
003
Detects periodic POST requests to an external endpoint containing specific request parameters (name, value, type) and a 'User-token' header, consistent with the expected beaconing intervals of the curlRAT malware (12h or 30s fast-poll).
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
103
Detects network requests to unpkg.com or npmmirror for 'index.html' files directly under a package path. This behavior deviates from standard package management usage (which typically fetches tarballs or specific JavaScript modules) and is often associated with adversaries using npm packages as hosting infrastructure for phishing landing pages.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
003
Detects cloud application events originating from suspicious or specific User-Agent strings, including 'python-requests' and identified outdated or potentially spoofed Chrome versions (146, 150, 151.0.0). This behavior often correlates with automated scripts or bot activity interacting with cloud services.
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Ankit Mehta@Secvyn
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Detection & Hunting Community
2 months ago
201
Detects cloud application events originating from suspicious or specific User-Agent strings, including 'python-requests' and identified outdated or potentially spoofed Chrome versions (146, 150, 151.0.0). This behavior often correlates with automated scripts or bot activity interacting with cloud services.
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Ankit Mehta@Secvyn
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SlimKQL
2 months ago
001
Detects cloud application events originating from suspicious or specific User-Agent strings, including 'python-requests' and identified outdated or potentially spoofed Chrome versions (146, 150, 151.0.0). This behavior often correlates with automated scripts or bot activity interacting with cloud services.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
101
Detects inbound emails associated with the Mirage phishing campaign. The detection monitors for known malicious domains in sender information and URL links, as well as specific command-and-control (C2) IP addresses and URL patterns.
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Ankit Mehta@Secvyn
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SlimKQL
2 months ago
203
Detects network connection attempts to specific external domains associated with suspicious JavaScript payloads. The rule filters for specific file paths (e.g., mpackage.js, bsc-loader.js) linked to known malicious or suspicious URL patterns on cdn.claritydelivr.com, rcrsinnovations.com, konverto.in, and cdn.api-middle-connect.com, which may indicate C2 beaconing or malware infection.
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Ankit Mehta@Secvyn
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Hunters
2 months ago
103
Detects network connection attempts to specific external domains associated with suspicious JavaScript payloads. The rule filters for specific file paths (e.g., mpackage.js, bsc-loader.js) linked to known malicious or suspicious URL patterns on cdn.claritydelivr.com, rcrsinnovations.com, konverto.in, and cdn.api-middle-connect.com, which may indicate C2 beaconing or malware infection.
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Ankit Mehta@Secvyn
Defender - KQL
2 months ago
203
Detects network connection attempts to specific external domains associated with suspicious JavaScript payloads. The rule filters for specific file paths (e.g., mpackage.js, bsc-loader.js) linked to known malicious or suspicious URL patterns on cdn.claritydelivr.com, rcrsinnovations.com, konverto.in, and cdn.api-middle-connect.com, which may indicate C2 beaconing or malware infection.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
303
Detects inbound emails associated with the Mirage phishing campaign. The detection monitors for known malicious domains in sender information and URL links, as well as specific command-and-control (C2) IP addresses and URL patterns.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
2 months ago
705
Detects suspicious activity associated with the exploitation of a vulnerability in N-central (CVE-2026-86218). The rule monitors for unauthorized child process spawning by N-central components, creation of files in the application directory consistent with web shells, outbound network connections indicative of command and control, and the creation of new local or service accounts for persistence.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
2 months ago
003
This rule monitors for DNS queries, HTTP requests to '/cli/check', and TLS SNI traffic directed towards the domain 'coder-infra.com', which is associated with a suspected compromise of a Coder registry.
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
003
Detects network activity from infrastructure provisioner tools (Terraform, Coder) or shell processes attempting to connect to suspicious domains (e.g., coder-infra.com) that resemble legitimate infrastructure domains. This activity is indicative of credential theft, specifically targeting OIDC tokens, SSH keys, or authentication tokens during automated provisioning processes.
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
003
Detects execution patterns associated with 'NinjaMare' style malware, where a process masquerading as a browser (e.g., tenbrowser.exe, fireflybrowser.exe) performs an external IP geolocation lookup followed by suspicious registry or file modifications indicative of browser hijacking or extension installation within a five-minute window.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
207
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.
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
000
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.
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Arnold Chan@slaz
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Hunters
2 months ago
000
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.
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
000
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