Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects the presence of known exploit harness files or the execution of Python scripts and binaries associated with libssh2 publickey subsystem heap overflow and arbitrary free exploits (including proof-of-concept code and reproduction harnesses).
This rule detects post-exploitation activity related to the exploitation of PHP StreamBucket SOAP deserialization vulnerabilities. It monitors for child process execution from PHP web server processes (e.g., php-fpm, php.exe), the creation of specific proof-of-concept (PoC) marker files, and the presence of identified exploit script filenames on disk.
Detects the abuse of the CertUtil.exe Windows utility to download, decode, encode, or split files. This behavior is considered suspicious when initiated by common command-line shells or Office applications, which are frequently used as entry points for malicious scripts or macro-based attacks.
Detects exploitation activity associated with CVE-2025-8088 used by UAC-0226 (GIFTEDCROOK). The rule monitors for WinRAR-family archive tools dropping files into the startup folder, staging payloads into C:\ProgramData, and the subsequent logon execution chain where cmd.exe launches PowerShell to execute encoded commands or content from ProgramData.
This rule detects when a single process account initiates a high volume (10 or more) of file move operations to folders associated with cloud storage services (e.g., 'cloud', 'dropbox', 'drive') within a one-hour window. This behavior could indicate data exfiltration or staging for exfiltration.
Detects indicators of Remcos RAT activity, specifically focusing on its use of native Windows utilities like attrib.exe, icacls.exe, and cmd.exe to modify file attributes, alter access control lists, or facilitate self-deletion. The rule also triggers when a identified Remcos-related process directly spawns these administrative tools for evasive actions.
This rule identifies accounts that create or modify 10 or more files, each larger than 200MB, within a one-hour period. This behavior can be indicative of data exfiltration, staging of large files, or other suspicious bulk file operations.
This rule detects potentially malicious activity related to browser extensions, specifically targeting configuration file modifications (manifest.json, rules files) or the use of sensitive browser APIs (declarativeNetRequest, updateDynamicRules) that are commonly abused by malicious extensions. It also flags activity that includes keywords associated with affiliate/ad-click fraud platforms within command line arguments of major browsers like Chrome and Edge.
This rule monitors Cisco SD-WAN environments for indicators of post-exploitation, including unauthorized SSH lateral movement, abuse of administrative tools (vshell, confd_cli), suspicious tenant list modifications related to CVE-2026-20245, privilege escalation to backdoor accounts, system file tampering (/etc/passwd, /etc/shadow), and anti-forensic activities such as log and history deletion.
This rule detects indicators of exploitation for CVE-2026-20245 in Cisco Catalyst SD-WAN Manager. It monitors for the upload of malicious tenant configuration files, the creation of unauthorized 'troot' administrative accounts, subsequent lateral movement via 'su', modifications to critical system authentication files like /etc/passwd or /etc/shadow, and post-exploitation configuration exfiltration via REST API endpoints.
Detects the creation of .amazonq/mcp.json or mcp.json files within repository directories following a git clone operation. This behavior is associated with the exploitation of vulnerabilities (such as CVE-2026-12957) where attackers use malicious job-interview repositories to trigger automatic execution of arbitrary MCP (Model Context Protocol) servers in the Amazon Q Developer extension in VS Code, potentially leading to unauthorized credential or sensitive data access.
This rule detects indicators of activity associated with a Firefox smart_window PoC, specifically designed to exfiltrate private browsing URLs. It monitors for suspicious network connections from the Firefox process to port 8765, the creation of PoC-related scripts, and the execution of associated Node.js processes or command lines.
Detects the drop or installation of known vulnerable drivers associated with the 'The Gentlemen' ransomware group's Bring Your Own Vulnerable Driver (BYOVD) tactics, or the creation of kernel-mode services by unsigned binaries. These techniques are often used to gain kernel-level privileges and disable security software.
This rule detects the modification or creation of sensitive Linux files often used for persistence, such as cron job configurations, system boot scripts, and custom system tools. It monitors for file writing and process execution events involving specific paths and filenames identified as associated with persistence mechanisms or monitoring tools.
This rule detects two potentially malicious activities related to SSH: first, specific utilities (e.g., luserput, blacklist, ssh) initiating outbound connections to internal network CIDR ranges over port 22, which may indicate lateral movement; second, the creation or modification of the .ssh/authorized_keys file, which is a common technique for establishing persistence or unauthorized access.
Detects potential privilege escalation and unauthorized file modification by the 'egnyteservice' account. The rule monitors Syslog for sudo usage involving the 'tee' utility with 'NOPASSWD' configuration, or suspicious writes to critical system directories such as /usr/sbin/ and /etc/cron.d/, which are indicative of VerdantBamboo threat actor activity on edge appliances.
Detects file and directory hiding techniques associated with Mustang Panda implants (e.g., SHARDLOADER, ZOHOMURK) by monitoring for the usage of 'attrib.exe' to set the hidden (+h) attribute, or the usage of 'icacls.exe' to manipulate access permissions within sensitive directories like ProgramData or AppData, which may be indicative of malicious artifact concealment.
Detects the creation or modification of common log file types (e.g., .log, .txt, .dat, .kl) by unsigned, non-standard processes executing from high-risk directories like AppData, Temp, or ProgramData. This behavior is indicative of potential keylogging activities associated with remote access trojans (RATs) such as Atlas RAT or ValleyRAT.
Detects anomalous SSH daemon (sshd) activity characterized by the installation or execution of a non-standard sshd binary (often located in /tmp or /var/tmp) or the execution of sshd with suspicious command-line arguments (custom ports or custom configuration files), followed by modifications to the authorized_keys file. This behavior is indicative of unauthorized persistence or backdoor access.
Detects file creation, modification, or renaming events affecting the 'config.db' file within the Microsoft Desktop App Installer package directory. This file is used by the AppInstaller process and unauthorized modification may indicate attempts to tamper with installed applications or app installation settings.
Detects the use of PowerShell, PWSH, or CMD to modify file system timestamps, a technique commonly referred to as timestomping. This is often used by adversaries to hide malicious file activity or blend in with legitimate system files by manipulating file creation, modification, or access time metadata.
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