Detections

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

2,686 detections

Detects outbound network traffic to a known malicious IP address associated with Rapuncel Stealer, specifically looking for HTTP POST requests to the /upload endpoint, indicating possible data exfiltration.
avatar
Ibrahim Saud@tektrix
avatar
Detections.ai Community
1 month ago
000
Detects instances where the outbound byte count to external (non-private) IP addresses for a source host significantly exceeds its historical hourly baseline. This detection is designed to identify potential data exfiltration stages occurring after system or network compromise.
avatar
Arnold Chan@slaz
avatar
Detection & Hunting Community
2 months ago
004
Detects GitHub OAuth authorization, repository cloning, or ZIP downloads from source IP addresses that have not been observed for the specific actor within the past 30 days. This rule helps identify potential account compromise or token theft where an attacker attempts to access repository data from a new location, while specifically excluding bot/service accounts known for rotating CI infrastructure IPs.
avatar
Arnold Chan@slaz
Defender - KQL
1 month ago
000
Detects GitHub OAuth authorization, repository cloning, or ZIP downloads from source IP addresses that have not been observed for the specific actor within the past 30 days. This rule helps identify potential account compromise or token theft where an attacker attempts to access repository data from a new location, while specifically excluding bot/service accounts known for rotating CI infrastructure IPs.
avatar
Arnold Chan@slaz
avatar
Detection & Hunting Community
1 month ago
000
Detects GitHub repository actions (git.clone, oauth_authorization.create, repo.download_zip) from actor IPs not seen for that user in the prior 30 days, requiring either 3+ actions or activity across 2+ distinct repositories from the new IP within the same day. Aggregating to burst/multi-repo behavior (rather than alerting on a single new-IP event) filters out one-off false positives from travel, VPNs, or dynamic IP reassignment while still surfacing sustained anomalous access patterns consistent with account compromise or bulk exfiltration.
avatar
Arnold Chan@slaz
avatar
Hunters
1 month ago
000
Detects GitHub repository actions (git.clone, oauth_authorization.create, repo.download_zip) from actor IPs not seen for that user in the prior 30 days, requiring either 3+ actions or activity across 2+ distinct repositories from the new IP within the same day. Aggregating to burst/multi-repo behavior (rather than alerting on a single new-IP event) filters out one-off false positives from travel, VPNs, or dynamic IP reassignment while still surfacing sustained anomalous access patterns consistent with account compromise or bulk exfiltration.
avatar
Arnold Chan@slaz
avatar
Midnight Slayer
1 month ago
000
Detects GitHub repository actions (git.clone, oauth_authorization.create, repo.download_zip) from actor IPs not seen for that user in the prior 30 days, requiring either 3+ actions or activity across 2+ distinct repositories from the new IP within the same day. Aggregating to burst/multi-repo behavior (rather than alerting on a single new-IP event) filters out one-off false positives from travel, VPNs, or dynamic IP reassignment while still surfacing sustained anomalous access patterns consistent with account compromise or bulk exfiltration.
avatar
Arnold Chan@slaz
Defender - KQL
1 month ago
000
Detects instances where a removed GitHub organization member performed bulk repository access (cloning or downloading) shortly before their removal, potentially indicating exploitation of retained access by a departed employee or an adversary using a valid account before deprovisioning. The rule identifies activity occurring more than 24 hours prior to removal involving multiple repositories or multiple access actions.
avatar
Arnold Chan@slaz
avatar
Midnight Slayer
1 month ago
000
Detects instances where a removed GitHub organization member performed bulk repository access (cloning or downloading) shortly before their removal, potentially indicating exploitation of retained access by a departed employee or an adversary using a valid account before deprovisioning. The rule identifies activity occurring more than 24 hours prior to removal involving multiple repositories or multiple access actions.
avatar
Arnold Chan@slaz
avatar
Detection & Hunting Community
1 month ago
000
Detects instances where a removed GitHub organization member performed bulk repository access (cloning or downloading) shortly before their removal, potentially indicating exploitation of retained access by a departed employee or an adversary using a valid account before deprovisioning. The rule identifies activity occurring more than 24 hours prior to removal involving multiple repositories or multiple access actions.
avatar
Arnold Chan@slaz
Defender - KQL
1 month ago
000
Detects rapid, bulk cloning or downloading of GitHub repositories containing sensitive data (e.g., consensus algorithms, PII, internal blocklists). This behavior is characteristic of unauthorized data exfiltration, specifically tracking activity involving suspicious OAuth token prefixes (gho_) and rapid high-volume access to sensitive organizational assets within a short timeframe.
avatar
Arnold Chan@slaz
avatar
Detection & Hunting Community
1 month ago
000
Detects rapid, bulk cloning or downloading of GitHub repositories containing sensitive data (e.g., consensus algorithms, PII, internal blocklists). This behavior is characteristic of unauthorized data exfiltration, specifically tracking activity involving suspicious OAuth token prefixes (gho_) and rapid high-volume access to sensitive organizational assets within a short timeframe.
avatar
Arnold Chan@slaz
avatar
Hunters
1 month ago
000
Detects rapid, bulk cloning or downloading of GitHub repositories containing sensitive data (e.g., consensus algorithms, PII, internal blocklists). This behavior is characteristic of unauthorized data exfiltration, specifically tracking activity involving suspicious OAuth token prefixes (gho_) and rapid high-volume access to sensitive organizational assets within a short timeframe.
avatar
Arnold Chan@slaz
Defender - KQL
1 month ago
000
Detects rapid, bulk cloning or downloading of GitHub repositories containing sensitive data (e.g., consensus algorithms, PII, internal blocklists). This behavior is characteristic of unauthorized data exfiltration, specifically tracking activity involving suspicious OAuth token prefixes (gho_) and rapid high-volume access to sensitive organizational assets within a short timeframe.
avatar
Arnold Chan@slaz
avatar
Midnight Slayer
1 month ago
000
Detects the creation and immediate deletion of a GitHub OAuth token that is used to clone or fetch a large volume of private repositories within a short lifespan. This behavior is indicative of an adversary using a temporary, ephemeral token to perform rapid data exfiltration or mass reconnaissance on source code repositories.
avatar
Arnold Chan@slaz
avatar
Hunters
1 month ago
000
Detects the creation and immediate deletion of a GitHub OAuth token that is used to clone or fetch a large volume of private repositories within a short lifespan. This behavior is indicative of an adversary using a temporary, ephemeral token to perform rapid data exfiltration or mass reconnaissance on source code repositories.
avatar
Arnold Chan@slaz
avatar
Detection & Hunting Community
1 month ago
000
Detects anomalous cloud authentication events occurring within a 3-hour window after suspected unauthorized access to sensitive configuration or credential files on a Vite development server. The rule flags sign-ins with high risk, anomalous location, or missing device compliance information, excluding trusted corporate locations and devices, serving as an indicator of potential post-exfiltration account takeover.
avatar
Arnold Chan@slaz
avatar
Hunters
2 months ago
002
Detects anomalous cloud authentication events occurring within a 3-hour window after suspected unauthorized access to sensitive configuration or credential files on a Vite development server. The rule flags sign-ins with high risk, anomalous location, or missing device compliance information, excluding trusted corporate locations and devices, serving as an indicator of potential post-exfiltration account takeover.
avatar
Arnold Chan@slaz
avatar
Midnight Slayer
2 months ago
002
Detects anomalous cloud authentication events occurring within a 3-hour window after suspected unauthorized access to sensitive configuration or credential files on a Vite development server. The rule flags sign-ins with high risk, anomalous location, or missing device compliance information, excluding trusted corporate locations and devices, serving as an indicator of potential post-exfiltration account takeover.
avatar
Arnold Chan@slaz
avatar
Detections.ai Community
2 months ago
002
Detects indicators of cross-site scripting (XSS) attacks aimed at stealing web session cookies. The rule covers the injection of malicious scripts into client responses, anomalous CORS preflight responses that could facilitate data exfiltration, and subsequent HTTP callbacks or beaconing containing cookie data to external endpoints.
avatar
Arnold Chan@slaz
avatar
Detections.ai Community
2 months ago
104
This rule detects potentially malicious interaction with specific GCP service account identifiers and client IDs. It monitors multiple log sources—including cloud audit logs, sign-in activity, security logs, and device network events—to identify unauthorized access, command and control communication, or data exfiltration attempts targeting Google API services (specifically oauth2.googleapis.com and sheets.googleapis.com).
avatar
Kaung Khant Ko@kaungkhantko
avatar
Detections.ai Community
2 months ago
1011
Page 33 of 128