Detections

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

1,217 detections

Detects web server processes (e.g., w3wp.exe, nginx.exe, tomcat.exe) spawning command-line interpreters or utilities that could indicate remote code execution, web shell activity, or post-exploitation discovery/download attempts.
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Arnold Chan@slaz
Defender - KQL
1 month ago
002
Detects web server processes (e.g., w3wp.exe, nginx.exe, tomcat.exe) spawning command-line interpreters or utilities that could indicate remote code execution, web shell activity, or post-exploitation discovery/download attempts.
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Arnold Chan@slaz
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Detections.ai Community
1 month ago
102
This rule monitors web server logs (IIS, W3C, and Azure Application Gateway) for incoming traffic that matches known malicious or automated vulnerability scanners, as well as requests for common system fingerprinting paths (such as /server-status or /.git/config). The rule aggregates these hits by source IP address to identify potential active reconnaissance or vulnerability scanning attempts.
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Arnold Chan@slaz
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Hunters
2 months ago
304
Detects the use of the 'tar' utility with the '--use-compress-program' flag, where the compression program specified is not a standard system compression tool. This pattern is commonly used by attackers to execute arbitrary payloads when tar extracts malicious archives.
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
101
Detects the use of the 'tar' utility with the '--use-compress-program' flag, where the compression program specified is not a standard system compression tool. This pattern is commonly used by attackers to execute arbitrary payloads when tar extracts malicious archives.
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Arnold Chan@slaz
Defender - KQL
1 month ago
001
Detects the use of the 'tar' utility with the '--use-compress-program' flag, where the compression program specified is not a standard system compression tool. This pattern is commonly used by attackers to execute arbitrary payloads when tar extracts malicious archives.
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Arnold Chan@slaz
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Detections.ai Community
1 month ago
001
Detects execution of the tar utility by the prl_disp_service process with a command line pattern indicative of command injection via the --use-compress-program flag. This technique is often used to execute arbitrary commands by embedding them within the compression program argument.
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Arnold Chan@slaz
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Hunters
1 month ago
001
Detects execution of the tar utility by the prl_disp_service process with a command line pattern indicative of command injection via the --use-compress-program flag. This technique is often used to execute arbitrary commands by embedding them within the compression program argument.
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Arnold Chan@slaz
Defender - KQL
1 month ago
001
Detects execution of the tar utility by the prl_disp_service process with a command line pattern indicative of command injection via the --use-compress-program flag. This technique is often used to execute arbitrary commands by embedding them within the compression program argument.
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
001
This rule detects potential web shell creation on a Microsoft Exchange server by monitoring for suspicious child processes spawned by the IIS web server process (w3wp.exe) that correlate with the creation or modification of web-accessible script files (.aspx, .ashx, .asp, .dll) within the Exchange virtual directories (ecp, owa, aspnet_client). This pattern is consistent with common post-exploitation activities used by attackers to gain persistent access via web shells.
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
001
This rule detects potential web shell creation on a Microsoft Exchange server by monitoring for suspicious child processes spawned by the IIS web server process (w3wp.exe) that correlate with the creation or modification of web-accessible script files (.aspx, .ashx, .asp, .dll) within the Exchange virtual directories (ecp, owa, aspnet_client). This pattern is consistent with common post-exploitation activities used by attackers to gain persistent access via web shells.
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Arnold Chan@slaz
Defender - KQL
1 month ago
001
This rule detects attempts by an IIS worker process (w3wp.exe) to tamper with or disable the Antimalware Scan Interface (AMSI) by monitoring for specific non-standard provider registrations or scan buffer patching events. This activity often indicates an attacker attempting to bypass security scanning within a web-based application process.
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
001
This rule detects attempts by an IIS worker process (w3wp.exe) to tamper with or disable the Antimalware Scan Interface (AMSI) by monitoring for specific non-standard provider registrations or scan buffer patching events. This activity often indicates an attacker attempting to bypass security scanning within a web-based application process.
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Arnold Chan@slaz
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Hunters
1 month ago
001
This rule detects attempts by an IIS worker process (w3wp.exe) to tamper with or disable the Antimalware Scan Interface (AMSI) by monitoring for specific non-standard provider registrations or scan buffer patching events. This activity often indicates an attacker attempting to bypass security scanning within a web-based application process.
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Arnold Chan@slaz
Defender - KQL
1 month ago
001
This rule detects attempts by an IIS worker process (w3wp.exe) to tamper with or disable the Antimalware Scan Interface (AMSI) by monitoring for specific non-standard provider registrations or scan buffer patching events. This activity often indicates an attacker attempting to bypass security scanning within a web-based application process.
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
001
Detects web requests to 'wp-admin/theme-install.php' containing suspicious query parameters that indicate an attempt to force an unauthenticated theme installation via a Cross-Site Request Forgery (CSRF) exploit (Click2Shell). The rule identifies requests with malicious payloads in the 'theme' parameter, specifically looking for indicators that attempt to bypass CSRF protections when originating from an external site or a non-admin session context.
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Arnold Chan@slaz
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Hunters
1 month ago
000
This rule detects potential web shell activity by identifying instances where a web server process creates or modifies a PHP file within a 'wp-content/themes' directory, followed closely (within 15 minutes) by that same web server process spawning a shell process (e.g., sh, bash, cmd.exe).
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
000
This rule detects potential web shell activity by identifying instances where a web server process creates or modifies a PHP file within a 'wp-content/themes' directory, followed closely (within 15 minutes) by that same web server process spawning a shell process (e.g., sh, bash, cmd.exe).
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
000
This rule detects potential web shell activity by identifying instances where a web server process creates or modifies a PHP file within a 'wp-content/themes' directory, followed closely (within 15 minutes) by that same web server process spawning a shell process (e.g., sh, bash, cmd.exe).
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Arnold Chan@slaz
Defender - KQL
1 month ago
000
This rule monitors for active reconnaissance or scanning behavior by detecting a single source IP interacting with a high number of distinct ports/hosts within a short time frame (NetworkScan) or accessing a high number of distinct URI paths/404 errors (WebContentScan).
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Arnold Chan@slaz
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Hunters
2 months ago
003
Detects potential web reconnaissance or scanning activity against Microsoft IIS servers. The rule identifies suspicious behavior by monitoring for high frequencies of distinct URI requests, excessive 404 Not Found status codes indicative of path brute-forcing, and the presence of known security scanning user-agents.
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Arnold Chan@slaz
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Hunters
2 months ago
203
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