Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects potential ransomware activity by correlating three distinct events: the execution of a suspicious, potentially obfuscated binary (matching a specific naming pattern of _win64.exe) from an untrusted location (e.g., Temp, AppData, Downloads), followed by a high volume of file modifications or renames with specific ransomware-related extensions (.locked), and the dropping of a known ransom note file (RESTORE_FILES.txt) within a short 15-minute time window.
This rule detects potential ransomware activity by correlating three distinct events: the execution of a suspicious, potentially obfuscated binary (matching a specific naming pattern of _win64.exe) from an untrusted location (e.g., Temp, AppData, Downloads), followed by a high volume of file modifications or renames with specific ransomware-related extensions (.locked), and the dropping of a known ransom note file (RESTORE_FILES.txt) within a short 15-minute time window.
Detects compromised versions (2.35 and 2.36) of the 'Admin Menu Editor Pro' WordPress plugin that were distributed via the official update infrastructure. These versions include embedded web shell code, as indicated by the presence of both plugin identification strings and common PHP execution or command-line utility functions used in backdoors.
Detects the presence of PHP web shell code within specific versions (2.35/2.36) of the Admin Menu Editor Pro plugin. This rule targets malicious files introduced via a supply chain compromise of the plugin's update distribution channel, specifically looking for common PHP obfuscation and execution functions associated with web shells.
Detects unauthorized attempts to modify, delete, or truncate backup configuration files and data directories associated with cPanel, WHM, and Plesk environments. This rule monitors for common file manipulation commands (e.g., rm, mv, truncate) targeting sensitive paths like /etc/acronis, /etc/cpanel/backups, and other backup-related directories, excluding actions performed by authorized service accounts.
Detects the creation of persistence mechanisms on Linux systems using APT Pre/Post-Invoke hooks (e.g., /etc/apt/apt.conf.d/99sys-update) or user profile initialization scripts (e.g., /etc/profile.d/sys-init.sh). The rule monitors for these files containing suspicious command strings such as curl downloads, xmrig mining configurations, or specific init-hook markers often used by cryptomining botnets.
Detects instances where a Redis server process, or its child process, writes a file named 'verify.html' into the web root directory '/var/www/html/'. This behavior is characteristic of adversaries abusing compromised Redis instances to deploy web shells or command-and-control beacons for persistent access.
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.
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.
Detects browser extension manifest.json files requesting declarativeNetRequest and content_scripts/host_permissions covering AI assistant vendor domains (BragJack attack class)
Detects browser extension manifest.json files requesting declarativeNetRequest and content_scripts/host_permissions covering AI assistant vendor domains (BragJack attack class)
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.
This rule detects unauthorized processes modifying the 'Secure Preferences' configuration file in Google Chrome or Microsoft Edge browser data directories. This activity often indicates an attempt by malicious software to hijack browser settings, such as forcing extensions or modifying security policies, which is a common precursor to credential theft or persistent malicious access.
This rule detects unauthorized processes modifying the 'Secure Preferences' configuration file in Google Chrome or Microsoft Edge browser data directories. This activity often indicates an attempt by malicious software to hijack browser settings, such as forcing extensions or modifying security policies, which is a common precursor to credential theft or persistent malicious access.
This rule detects potential attempts to tamper with or bypass Windows Defender by monitoring for files or processes named 'ShieldCrash' occurring in close temporal proximity to the creation or modification of files within Windows Defender's shadow or scan directories (BaseNamedObjects\Restricted\WD_SHADOW_ or WD_SCAN). This behavior is often associated with malware attempting to evade security detection.
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.
Detects potential web shell or malicious DLL deployment into Microsoft Exchange or IIS directories by the IIS worker process (w3wp.exe), as well as suspicious child process execution (such as command-line shells or credential discovery tools) spawned directly from IIS worker processes.
Detects unauthorized attempts to modify WordPress user tables (wp_usermeta) by web server processes to escalate privileges, specifically targeting the 'wp_capabilities' or 'administrator' flags. This activity is indicative of an exploit or post-exploitation behavior following a web-based attack.
This rule detects potential web shell activity within the 'Admin Menu Editor Pro' WordPress plugin. It searches for PHP files containing a combination of sensitive execution functions (e.g., eval, base64_decode, system) which are characteristic of the malicious code injected into versions 2.35/2.36 of the plugin during its supply chain compromise.
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
Detects the creation of multiple or specific file locks that deviate from standard naming conventions, often associated with wiper malware attempting to overwrite files or fill disks by creating locking files as part of their destructive payload.
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