Detections

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

4,543 detections

Detects suspicious use of Windows API functions (SetWindowsHookEx) often associated with keylogging, correlated with the presence of temporary staging files in common directories (e.g., Temp, AppData). The rule excludes known legitimate applications that frequently utilize system hooks.
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Arnold Chan@slaz
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Detections.ai Community
1 month ago
000
This rule detects potential execution of malicious files from removable media (e.g., USB drives). It monitors for a sequence of events where a removable drive is mounted, a file is subsequently created on that drive, and then that same file is executed within a short time window.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
004
Detects network communication with identified C2 infrastructure associated with VectraRAT, Amadey, and ClickFix campaigns, as well as the presence of a specific 'callback.json' artifact in temporary directories, which is commonly used for C2 address overrides.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
102
Detects suspected exploitation of CVE-2026-81963, an Elevation of Privilege vulnerability in the Windows Update stack. The rule monitors for the creation of reparse points, junctions, or symbolic links within update staging paths by Windows Update processes, followed by either the spawning of suspicious child processes or unauthorized file writes/renames outside of expected directories, which are indicative of a privileged link-following exploit.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
2 months ago
10010
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
Detects unauthorized modifications, creations, or renames of Pluggable Authentication Module (PAM) configuration files or core shared libraries (such as pam_rootok.so or pam_permit.so) by non-root users. Attackers often modify these files to bypass authentication mechanisms and achieve privilege escalation. The rule excludes common package management tools to minimize false positives.
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Arnold Chan@slaz
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Hunters
1 month ago
000
Detects unauthorized modifications, creations, or renames of Pluggable Authentication Module (PAM) configuration files or core shared libraries (such as pam_rootok.so or pam_permit.so) by non-root users. Attackers often modify these files to bypass authentication mechanisms and achieve privilege escalation. The rule excludes common package management tools to minimize false positives.
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
000
This rule detects file creation or modification events within the WordPress plugin directory for 'admin-menu-editor-pro'. Given that WordPress plugins are frequent targets for web shell placement, this rule monitors for unauthorized changes to the plugin's file structure, which may indicate an attempt to gain persistence or remote code execution on the web server.
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Ibrahim Saud@tektrix
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Detections.ai Community
2 months ago
001
Detects file-related operations (creation, modification, renaming, or deletion) performed on files containing 'acronis' or 'backup' in their path, executed by a process associated with Acronis, running under highly privileged system contexts (root or SYSTEM). This activity is indicative of potential unauthorized manipulation or disabling of backup software, commonly seen in ransomware attacks to inhibit recovery.
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Ibrahim Saud@tektrix
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Detections.ai Community
2 months ago
001
Detects PHP web shells dropped into wp-content/uploads or plugin directories following WordPress plugin exploitation, characterized by host detail reporting and a browser-based file upload form
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
001
Detects the creation of .lnk files in Windows startup folders combined with the execution of AutoIt automation scripts, a technique commonly used for persistence and malware execution.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
002
This rule detects the creation of files within the '\Users\Public\' directory that follow a specific, suspicious dynamic naming pattern: 'DeviceName@4AccountName'. Attackers often use the Public directory for staging malicious tools or payloads. This naming convention, which includes both the hostname and the executing account name, is highly indicative of automated, malicious activity or custom staging scripts.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
002
This rule detects potentially malicious activity where multiple critical processes (such as database engines or email clients) are terminated in a short time frame, correlated with a high volume of file creation or modification events on the same device. This behavior is indicative of destructive activity, such as ransomware encrypting data stores or disabling defensive software.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
2508
Detects the installation or execution of known remote access tools (RMM) from suspicious parent processes (browsers, archives) or from user-writable directories (Temp, Downloads). This behavior is characteristic of initial access and staging activities performed by ransomware operators or Initial Access Brokers (IABs). The rule excludes known IT-managed deployment paths and signed binaries used by the organization.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
3010
This rule detects file creation or modification events occurring within the 'ProgramData\ZlibDate' directory. This specific path and the associated file extensions (.Dat and .zip) are frequently associated with data staging activities or unauthorized file management by malicious software attempting to persist or exfiltrate data under the guise of legitimate application data.
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Arnold Chan@slaz
Defender - KQL
2 months ago
201
This rule detects the creation of files in directory paths that look similar to the legitimate 'C:\Windows\SysWOW64' folder but contain a hidden trailing space (e.g., 'C:\Windows \SysWOW64'). Attackers use this directory spoofing technique to hide malicious files or executables from users and some security tools that might not normalize the path correctly.
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Arnold Chan@slaz
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Hunters
2 months ago
001
This rule detects the creation of files in directory paths that look similar to the legitimate 'C:\Windows\SysWOW64' folder but contain a hidden trailing space (e.g., 'C:\Windows \SysWOW64'). Attackers use this directory spoofing technique to hide malicious files or executables from users and some security tools that might not normalize the path correctly.
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
001
This rule detects the creation of files in directory paths that look similar to the legitimate 'C:\Windows\SysWOW64' folder but contain a hidden trailing space (e.g., 'C:\Windows \SysWOW64'). Attackers use this directory spoofing technique to hide malicious files or executables from users and some security tools that might not normalize the path correctly.
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Arnold Chan@slaz
Defender - KQL
2 months ago
001
This rule detects the creation of files in directory paths that look similar to the legitimate 'C:\Windows\SysWOW64' folder but contain a hidden trailing space (e.g., 'C:\Windows \SysWOW64'). Attackers use this directory spoofing technique to hide malicious files or executables from users and some security tools that might not normalize the path correctly.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
001
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