Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects the execution of the legitimate Microsoft Visual Studio CoreCLR Debugger (vsdbg.exe) from an unauthorized file location. This behavior is indicative of masquerading, where the executable is renamed to appear as an installer to sideload a malicious companion vsdbg.dll, a technique observed in the Rapuncel/BoryptGrab campaign.
Detects attempts by malicious software, specifically SloppyRAT, to query or modify Microsoft Defender settings by interacting with WMI classes like MSFT_MpPreference or MSFT_MpComputerStatus. This activity is indicative of efforts to disable security controls such as real-time monitoring to facilitate further malicious actions.
Detects the execution of known Living-off-the-Land Binaries (LOLBins) such as finger.exe or curl.exe that are spawned by common Windows processes like explorer.exe or RuntimeBroker.exe. This behavior is often associated with adversaries attempting to download malicious payloads or stage tools within the environment.
This rule detects indicators of the Rapuncel browser injection by monitoring for the creation of a known malicious DLL hash on disk, identifying non-standard parent processes invoking elevation_service.exe, and detecting the loading of unrecognized DLLs into Google Chrome or Microsoft Edge browser processes.
Detects potential UAC bypass attempts using COM Elevation Monikers or the misuse of ServiceModelReg.exe, often associated with process hollowing techniques.
This rule detects the execution of the Visual Studio Debugger (vsdbg.exe) from suspicious locations such as Downloads, Temp, or Desktop directories. Executing development tools from these user-writable directories is often indicative of an adversary attempting to use legitimate debugging tools to facilitate process injection or malicious activity. The rule excludes legitimate executions located within the official Microsoft Visual Studio installation directory.
This rule detects the execution of the legacy finger.exe utility when spawned by common user-facing applications (e.g., browsers, shells, explorer). The detection specifically looks for instances where the command line includes an '@' character, indicating an attempt to query information from a remote host, while excluding standard localhost queries. This pattern is often associated with reconnaissance activity or enumeration of remote users/systems.
Detects the execution of curl.exe by various script interpreters (cmd.exe, powershell.exe, wscript.exe, mshta.exe) or Windows Explorer. This pattern is commonly used by adversaries to download malicious payloads or intermediate loaders as part of an attack chain, such as deploying CastleLoader/CastleRAT.
This rule detects network connections or process command lines associated with known malicious domains, IP addresses, or payload URLs. Additionally, it correlates connections to common public file-sharing platforms or APIs (e.g., Gofile, Telegram) if these events occur on the same device within a 60-minute window of a confirmed malicious infrastructure event, reducing false positives from legitimate uses of shared infrastructure.
This rule monitors for network connections to known command-and-control (C2) IP addresses and the execution or presence of files matching known hashes associated with the 'PhantomC2' threat group or malware family. It correlates data from DeviceNetworkEvents, DeviceFileEvents, and DeviceProcessEvents to identify potential compromise.
Detects the execution of base64 encoded PowerShell commands initiated by conhost.exe with the --headless flag. The decoded command contains specific suspicious patterns, including accessing environment variables, reading file content, and deleting files, which is characteristic of malicious scripts attempting to stealthily interact with the environment.
Detects the execution of 'bun' during a Node.js package installation process (npm or node). This behavior can be indicative of a supply chain attack where malicious actors attempt to leverage alternative runtimes during the 'preinstall' phase or package installation to execute arbitrary code or bypass security controls typically associated with standard Node.js installations.
Detects instances where the Steam service (steamservice.exe) is executing suspicious child processes such as command interpreters or binaries located in unusual paths like Temp, Downloads, or AppData, often indicating an attempt to hide malicious activity under a trusted process.
This rule detects potential privilege escalation to root originating from Acronis backup plugin processes on hosting platforms like cPanel, WHM, and Plesk. It flags cases where a non-root Acronis process spawns a child process with root effective UID or when the process UID itself changes to zero, potentially exploiting vulnerabilities such as CVE-2026-87886. The rule also correlates this behavior with suspicious file permission changes (chmod/chown) on Acronis plugin directories.
Detects local privilege escalation attempts targeting Acronis backup plugins for cPanel, WHM, and Plesk. The rule monitors for instances where backup-related processes or binaries located within control panel paths are executed with root privileges when the parent process was not originated by root, a behavior indicative of exploiting insecure file permissions.
Detects the execution of a shell process (sh, bash, dash, zsh) spawned as a child of Acronis backup agent or plugin processes by the root user. This behavior is indicative of potential exploitation of local privilege escalation vulnerabilities, such as CVE-2026-87886, within Acronis backup plugins for cPanel, WHM, and Plesk.
Detects instances where web server worker processes such as php-fpm, apache, or nginx spawn shell interpreters (sh, bash, dash). This behavior is often indicative of web shell execution, where an adversary leverages a compromised web application to execute arbitrary commands on the underlying host.
Detects repeated process execution events associated with Acronis backup plugins for cPanel, WHM, or Plesk within a 15-minute window. This behavior is consistent with automated exploitation attempts, specifically referencing CVE-2026-87886, which target these backup management plugins to achieve privilege escalation or unauthorized system access.
Detects potential exploitation of CVE-2026-87886 in the Acronis Backup plugin for cPanel & WHM, where an adversary uses insecure file permissions to elevate privileges. The rule monitors for execution of file permission or ownership changing utilities (chmod, chown) targeting files associated with backup plugins.
Detects instances where the 'msedge.exe' binary is executed from the non-standard path 'C:\ProgramData\Microsoft\Windows\Telemetry\', excluding instances initiated by the legitimate Microsoft Edge Update process. This pattern often indicates masquerading, where an adversary places a malicious file with a legitimate name in an attempt to evade detection.
This rule monitors for processes named 'msedge.exe' executing from the 'C:\ProgramData\Microsoft\Windows\Telemetry\' directory. The rule filters out legitimate Edge update processes and common browser command-line arguments to isolate potentially malicious masquerading attempts by identifying binaries that share the name of a legitimate application but reside in unexpected, often non-standard locations.
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