Detections

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

88 detections

This rule detects network connections to known cloud storage, file hosting, and webhook services (Discord, Pastebin, Dropbox, Telegram, AnonFiles) initiated by processes other than standard web browsers. Such behavior is often indicative of data exfiltration or C2 activity using legitimate web services to blend in with normal traffic.
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Ankit Mehta@Secvyn
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Detections.ai Community
4 months ago
004
This rule detects network connections to known cloud storage, file hosting, and webhook services (Discord, Pastebin, Dropbox, Telegram, AnonFiles) initiated by processes other than standard web browsers. Such behavior is often indicative of data exfiltration or C2 activity using legitimate web services to blend in with normal traffic.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
003
Detects instances where language-related processes (amazonq-language-server, node) or common tools (bash, sh, curl, aws) execute commands containing AWS access credentials or perform potential data exfiltration via curl POST requests.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
008
Detects the use of 'curl' with '-X PUT' and '--data-binary' options, which can indicate data exfiltration or staging activities. This combination is often used to upload raw data to a specified endpoint.
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nomit vyas@xoxo
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Detections.ai Community
4 months ago
4013
Detects network connections to the Telegram API (api.telegram.org) from processes identified as LOLBins or residing in suspicious, potentially writable locations such as Temp, AppData, or user-defined directories. This activity is often indicative of C2 communication or data exfiltration by malware bypassing standard messaging client restrictions.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
002
Detects data exfiltration through Discord webhook POST requests
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Darshan Thummar@Mighty
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Detections.ai Community
4 months ago
006
This rule detects network connections to known cloud storage, file hosting, and webhook services (Discord, Pastebin, Dropbox, Telegram, AnonFiles) initiated by processes other than standard web browsers. Such behavior is often indicative of data exfiltration or C2 activity using legitimate web services to blend in with normal traffic.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
002
Detects suspicious network connections or process activity targeting Discord webhooks or API endpoints, potentially indicating data exfiltration, command and control, or token validation by malicious actors. The rule specifically looks for non-Discord processes making these connections or using suspicious user agents.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
0010
Detects network connections to the Telegram API (api.telegram.org) from processes identified as LOLBins or residing in suspicious, potentially writable locations such as Temp, AppData, or user-defined directories. This activity is often indicative of C2 communication or data exfiltration by malware bypassing standard messaging client restrictions.
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Ankit Mehta@Secvyn
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Detections.ai Community
4 months ago
001
Detects network connections attempting to exfiltrate data via Discord webhooks. This rule specifically looks for POST requests to the Discord API webhook endpoint.
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nomit vyas@xoxo
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Detections.ai Community
4 months ago
104
This rule detects the creation of a '_vault.zip' archive, which is characteristic of the VVS Stealer malware, followed by network activity to Discord from the same process within a 15-minute window. VVS Stealer uses these archives to store stolen browser data (passwords, cookies, history, autofill) before exfiltrating it, often via Discord webhooks.
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Daniel Jeremiah@daniyyell
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Detections.ai Community
4 months ago
007
This rule detects potential data exfiltration attempts or sensitive information disclosure through Microsoft Copilot Enterprise Search. It specifically looks for 'URLClick' actions from 'Microsoft Copilot Enterprise Search' where the raw event data contains a 'q=' parameter (indicating a query) and also contains keywords like 'extract', 'embed', or 'img'. This combination suggests that a user might be attempting to extract or embed content, potentially sensitive, via a Copilot search query, which could lead to data leakage.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
5015
Detects use of Discord webhooks for covert C2 or data exfiltration
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Darshan Thummar@Mighty
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Detections.ai Community
4 months ago
2013
This rule detects potential data exfiltration attempts or sensitive information disclosure through Microsoft Copilot Enterprise Search. It specifically looks for 'URLClick' actions from 'Microsoft Copilot Enterprise Search' where the raw event data contains a 'q=' parameter (indicating a query) and also contains keywords like 'extract', 'embed', or 'img'. This combination suggests that a user might be attempting to extract or embed content, potentially sensitive, via a Copilot search query, which could lead to data leakage.
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Ankit Mehta@Secvyn
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Detections.ai Community
4 months ago
107
Detects the creation, alteration, or deletion of a SQL external model that could be used to establish a persistent exfiltration channel. Threat actors can leverage this to send data to an external server whenever a table is updated, particularly when combined with SQL triggers.
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Ethan Andrews@eandrews
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Federal Signal Detections
5 months ago
2010
This rule detects potential data exfiltration attempts via Slack incoming webhooks. It triggers when an HTTP POST request is made to 'hooks.slack.com' with a URI containing '/services/' and a data size greater than 500 bytes. This pattern is indicative of an application or script sending data to a Slack channel using a webhook.
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Darshan Thummar@Mighty
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Detections.ai Community
5 months ago
106
Detects the configuration change that enables the 'external rest endpoint' feature in SQL Server 2025. Threat actors can abuse this feature using sp_invoke_external_rest_endpoint to natively exfiltrate data and establish C2 channels.
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Ethan Andrews@eandrews
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Federal Signal Detections
5 months ago
106
This rule detects potential data exfiltration attempts via Discord webhooks. It specifically looks for HTTP POST requests to discord.com/api/webhooks/ with a data size greater than 500 bytes. This could indicate an attacker sending sensitive information out of the network using Discord's API.
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Darshan Thummar@Mighty
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Detections.ai Community
5 months ago
005
This rule detects potential data exfiltration attempts via Microsoft Teams webhook connectors. It specifically looks for HTTP POST requests to 'outlook.office.com' with a URI containing '/webhook/' and a data size greater than 500 bytes. This combination suggests that data might be sent out through a Teams webhook, which can be abused for exfiltration.
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Darshan Thummar@Mighty
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Detections.ai Community
5 months ago
001
This rule detects network connections from devices to a predefined list of domains commonly associated with data exfiltration services. Monitoring these connections can help identify attempts to transfer sensitive data out of the network.
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Gurpreet Suhi@gsuhi
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Detections.ai Community
6 months ago
340603
This rule detects unusual network connections from processes to legitimate service endpoints that are commonly abused for Command and Control (C2) activities (LOLC2). It specifically looks for connections to services like Telegram, Slack, Discord, GitHub, Google APIs, Pastebin, Dropbox, and others, originating from processes that are not recognized as legitimate applications for those services, and not from common system processes or standard program file paths. This helps identify potential adversary communication channels masquerading as legitimate traffic.
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F S@Fsdr
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Detections.ai Community
7 months ago
261384
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