Detections

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

2,686 detections

Detects instances where a non-browser process initiates network connections to multiple AI service providers and Discord within a 15-minute correlation window, potentially indicating automated data exfiltration or unauthorized interaction with AI platforms using tools other than standard web browsers.
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Goksel Atakan@gokselatakan
Defender - KQL
1 month ago
403
Detects DNS queries to major public LLM API endpoints (OpenAI, Anthropic, Google Generative Language). This may indicate potential use of these services as a command and control (C2) channel or for data exfiltration by insiders or compromised systems, which may bypass traditional security controls.
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Ankit Mehta@Secvyn
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Detections.ai Community
30 days ago
000
Detects Node.js processes establishing network connections to common webhook relay and collection services, which may indicate data exfiltration or credential theft.
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Ankit Mehta@Secvyn
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Detections.ai Community
1 month ago
103
Detects potential exfiltration of sensitive DevOps credentials or configuration files (such as AWS credentials, SSH keys, Kubernetes configs, or cryptocurrency wallets) by monitoring for file access events followed by outbound network connections to known exfiltration channels like Slack or specific C2 infrastructure within a 30-minute window.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
004
Detects the use of data archival utilities (7zip, WinRAR) or command-line cloud synchronization tools (Rclone) to stage files in common temporary directories, immediately followed by network connections to known cloud storage endpoints. This pattern is characteristic of pre-encryption exfiltration activities often seen in ransomware campaigns.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
000
Detects large HTTP POST requests (exceeding 100KB) directed to public LLM API endpoints such as OpenAI or Anthropic. This behavior may indicate potential bulk data exfiltration or unauthorized sharing of sensitive data with external AI providers.
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Ankit Mehta@Secvyn
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Detections.ai Community
1 month ago
000
Detects instances where a non-browser process initiates connections to commercial LLM provider APIs (DeepSeek, OpenRouter, Mistral) followed by a connection to Discord CDN/Webhook endpoints within a 15-minute window. This behavior is indicative of a process acting as an autonomous C2 agent that exfiltrates data after receiving instructions or processing information via an LLM.
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
004
Detects the execution of the 'gitshot' binary, which is known to automatically create public repositories and release tags to host screenshots or screen recordings. This behavior can be abused by insiders or attackers to exfiltrate sensitive data outside of corporate control.
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
000
Detects the execution of the 'gitshot' binary, which is known to automatically create public repositories and release tags to host screenshots or screen recordings. This behavior can be abused by insiders or attackers to exfiltrate sensitive data outside of corporate control.
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
000
Detects the execution of the 'gitshot' binary, which is known to automatically create public repositories and release tags to host screenshots or screen recordings. This behavior can be abused by insiders or attackers to exfiltrate sensitive data outside of corporate control.
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Arnold Chan@slaz
Defender - KQL
1 month ago
000
Detects the creation or exposure of public repositories, releases, or gists under a personal GitHub account that utilize naming conventions associated with the 'PixelLeak' workaround. This technique allows adversaries to make previously private screenshots, recordings, or internal assets publicly accessible by hosting them in public personal repositories or releases.
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Arnold Chan@slaz
Defender - KQL
1 month ago
000
Detects the creation or exposure of public repositories, releases, or gists under a personal GitHub account that utilize naming conventions associated with the 'PixelLeak' workaround. This technique allows adversaries to make previously private screenshots, recordings, or internal assets publicly accessible by hosting them in public personal repositories or releases.
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
000
Detects the creation or exposure of public repositories, releases, or gists under a personal GitHub account that utilize naming conventions associated with the 'PixelLeak' workaround. This technique allows adversaries to make previously private screenshots, recordings, or internal assets publicly accessible by hosting them in public personal repositories or releases.
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Arnold Chan@slaz
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Hunters
1 month ago
000
This rule detects potentially malicious network activity by monitoring for specific query parameters ('bmodule', 'smodule', 'lmodule', 'task', 'upload.php') in web requests or communication with a specific known-malicious IP address ('62.60.226.50'). This pattern is characteristic of C2 (Command and Control) traffic or unauthorized file staging/upload operations.
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Ankit Mehta@Secvyn
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Detections.ai Community
1 month ago
103
Detects the 'auto-exfil' pattern associated with the TeamFiltration tool. The rule identifies a sequence of SharePoint Online file access immediately followed by a Microsoft Graph token request from the SharePoint Online Web Client Extensibility app. To reduce noise, it mandates a very short time delta between events (<= 60 seconds) combined with either the use of an IP address/ASN not previously seen for the account in the last 14 days, or a preceding failed sign-in attempt for the account.
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Arnold Chan@slaz
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Hunters
1 month ago
001
Detects the 'auto-exfil' pattern associated with the TeamFiltration tool. The rule identifies a sequence of SharePoint Online file access immediately followed by a Microsoft Graph token request from the SharePoint Online Web Client Extensibility app. To reduce noise, it mandates a very short time delta between events (<= 60 seconds) combined with either the use of an IP address/ASN not previously seen for the account in the last 14 days, or a preceding failed sign-in attempt for the account.
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
001
Detects anomalous POST requests to the RubyGems webhook API endpoint (/api/v1/web_hooks) containing specific indicators ('A000' or 'ZZEND') in the request body, which suggests the misuse of legitimate webhooks for chunked data exfiltration.
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Ankit Mehta@Secvyn
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Detections.ai Community
1 month ago
000
Detects anomalous, high-volume file download or export activity originating from a single identity across multiple downstream cloud applications or tenants within a one-hour window. This behavior is indicative of a compromised shared service provider, MSP, or clearinghouse account being leveraged to exfiltrate data from multiple client environments simultaneously. The detection excludes pre-approved service accounts and relies on a dynamic baseline comparison rather than a static threshold.
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Arnold Chan@slaz
Defender - KQL
1 month ago
000
Detects anomalous, high-volume file download or export activity originating from a single identity across multiple downstream cloud applications or tenants within a one-hour window. This behavior is indicative of a compromised shared service provider, MSP, or clearinghouse account being leveraged to exfiltrate data from multiple client environments simultaneously. The detection excludes pre-approved service accounts and relies on a dynamic baseline comparison rather than a static threshold.
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
000
Detects anomalous, high-volume file download or export activity originating from a single identity across multiple downstream cloud applications or tenants within a one-hour window. This behavior is indicative of a compromised shared service provider, MSP, or clearinghouse account being leveraged to exfiltrate data from multiple client environments simultaneously. The detection excludes pre-approved service accounts and relies on a dynamic baseline comparison rather than a static threshold.
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Arnold Chan@slaz
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Hunters
1 month ago
000
Detects anomalous, high-volume file download or export activity originating from a single identity across multiple downstream cloud applications or tenants within a one-hour window. This behavior is indicative of a compromised shared service provider, MSP, or clearinghouse account being leveraged to exfiltrate data from multiple client environments simultaneously. The detection excludes pre-approved service accounts and relies on a dynamic baseline comparison rather than a static threshold.
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
000
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