Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects a hardcoded PEM RSA public key embedded alongside JSCeal-specific compiled V8 bytecode obfuscation artifacts, used to encrypt exfiltrated data or C2 communications
Detects HTML content that mimics Cloudflare CAPTCHA challenges to perform social engineering (ClickFix). The rule specifically identifies the combination of fake CAPTCHA UI text, connection to suspicious domains (DDR patterns), and JavaScript snippets used to fetch and execute secondary payloads or redirects.
Detects periodic screen capture activity performed by Node.js or Electron-based processes, correlated with subsequent outbound network connections to public IP addresses within a short timeframe. This behavior is indicative of the JSCeal malware's surveillance and exfiltration module, where local reconnaissance via screenshotting is followed by data transmission.
Detects periodic screen capture activity performed by Node.js or Electron-based processes, correlated with subsequent outbound network connections to public IP addresses within a short timeframe. This behavior is indicative of the JSCeal malware's surveillance and exfiltration module, where local reconnaissance via screenshotting is followed by data transmission.
This rule detects potential malicious activity related to the 'gh-token-monitor' toolkit by aggregating suspicious signals across file, process, and network data sources on an individual host. It looks for the presence of specific configuration files or scripts, execution of commands associated with the toolkit or setup processes, and network connections to known command-and-control domains or IP addresses. A host is flagged if it exhibits two or more of these distinct signal categories, suggesting a high-confidence indicator of compromise.
Detects rapid enumeration of sensitive system information files (CPU info, command line, device ID, node data) by processes executing from transient or commonly abused directories like /tmp, /var/tmp, or /dev/shm, as well as processes identified with specific malware naming patterns. This behavior often indicates an initial discovery phase by a threat actor or automated malicious agent.
Detects the creation of PHP files within the 'wp-content/uploads/elementor/forms/' directory of a WordPress installation. This behavior is highly suspicious as it often indicates an attempt by an attacker to deploy a web shell or other malicious script following successful exploitation of the Elementor plugin, which allows for arbitrary file uploads.
This rule detects modifications to Windows Registry persistence keys (Run and RunOnce) associated with specific suspicious filenames ('cplsupport.exe', 'wtass.exe'), as well as modifications to specific Synapse agent configuration registry keys. These patterns are often associated with persistence mechanisms or unauthorized software configuration changes.
Detects the delivery of .mobileconfig files or related configuration profile types (e.g., .plist, .xml) via email. These profiles are used on macOS and iOS devices to modify system settings, such as mail, calendar, or contact synchronization, and can be used to install malicious root certificates to enable Man-in-the-Middle (MITM) attacks. This rule accounts for direct attachments as well as those concealed within zip archives.
Detects the delivery of .mobileconfig files or related configuration profile types (e.g., .plist, .xml) via email. These profiles are used on macOS and iOS devices to modify system settings, such as mail, calendar, or contact synchronization, and can be used to install malicious root certificates to enable Man-in-the-Middle (MITM) attacks. This rule accounts for direct attachments as well as those concealed within zip archives.
Detects the PoisonedRefresh implant's UNIX domain socket backdoor by (1) file activity on the uniquely-named /run/bigtlog.pipe socket initiated by an Apache/httpd process, and (2) process command lines containing the implant's hardcoded authentication token. Removed the earlier generic 'bash spawned by httpd' heuristic, which fired on legitimate CGI/mod_php/admin automation that shells out from the web server and was the dominant false-positive source.
This rule detects the presence or execution of a file named 'GlobalProtect.exe' within the Palo Alto GlobalProtect directory. It focuses on identifying potentially masqueraded or unauthorized binaries by monitoring file events and associated process execution. This pattern is commonly used by attackers to disguise malicious files as legitimate security software to evade detection.
This rule monitors security event logs for the presence of a specific file hash identified as potentially malicious (d41d8cd98f00b204e9800998ecf8427e). This hash specifically corresponds to an empty file (MD5 checksum of an empty string), often indicating potential obfuscation techniques, failed file writes, or placeholder files used by malicious scripts.
This rule monitors security event logs for the presence of a specific file hash identified as potentially malicious (d41d8cd98f00b204e9800998ecf8427e). This hash specifically corresponds to an empty file (MD5 checksum of an empty string), often indicating potential obfuscation techniques, failed file writes, or placeholder files used by malicious scripts.
This rule detects file access, creation, modification, or renaming operations involving sensitive files associated with cryptocurrency wallets (Bitcoin, Electrum, ElectrumSV), game account configurations (Battle.net, Steam, Minecraft), and browser-based cookies (Roblox). The rule filters out legitimate process interactions, identifying suspicious activity from unknown or unauthorized applications potentially attempting to exfiltrate credentials or session tokens.
This rule detects file access, creation, modification, or renaming operations involving sensitive files associated with cryptocurrency wallets (Bitcoin, Electrum, ElectrumSV), game account configurations (Battle.net, Steam, Minecraft), and browser-based cookies (Roblox). The rule filters out legitimate process interactions, identifying suspicious activity from unknown or unauthorized applications potentially attempting to exfiltrate credentials or session tokens.
This rule detects processes accessing '/proc/self/status' to read the 'TracerPID' field. Malware often uses this technique to detect if it is being debugged or traced by security analysis tools, allowing the process to terminate or change behavior to avoid analysis.
This rule detects potential web shell activity by identifying suspicious PHP file creation within Magento-style product cache directories and the execution of find commands targeted at searching for PHP files in the web directory. This behavior is indicative of an attacker attempting to plant a web shell and subsequently enumerating web files for further exploitation.
This rule detects potential web shell activity by identifying suspicious PHP file creation within Magento-style product cache directories and the execution of find commands targeted at searching for PHP files in the web directory. This behavior is indicative of an attacker attempting to plant a web shell and subsequently enumerating web files for further exploitation.
This rule detects potential web shell activity by identifying suspicious PHP file creation within Magento-style product cache directories and the execution of find commands targeted at searching for PHP files in the web directory. This behavior is indicative of an attacker attempting to plant a web shell and subsequently enumerating web files for further exploitation.
Detects the creation or modification of a specific file ('libvirtlog.so.0') located in '/usr/lib/' which acts as a gating mechanism for the curlRAT malware. The detection correlates this file event with processes commonly associated with system management that are executing with command line arguments indicative of malicious activity (e.g., 'reverse', 'pty').
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