Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects a sequence of events where a PDF file opened from a Microsoft Outlook content directory triggers an immediate subsequent execution of a Microsoft Edge process pointing to a Google Sites URL, or containing suspicious command line arguments often associated with malicious redirection or web-based credential harvesting.
This rule detects potential spearphishing activity by correlating email attachments containing specific 'Request for Quotation' filenames with subsequent suspicious file creation events on endpoints. It specifically looks for matching attachments (MSG or PDF) from email logs and tracks if similar file patterns appear in Microsoft Outlook content or temporary folders on host devices.
This rule detects potential spearphishing activity by correlating email attachments containing specific 'Request for Quotation' filenames with subsequent suspicious file creation events on endpoints. It specifically looks for matching attachments (MSG or PDF) from email logs and tracks if similar file patterns appear in Microsoft Outlook content or temporary folders on host devices.
Detects a sequence of events where a PDF file opened from a Microsoft Outlook content directory triggers an immediate subsequent execution of a Microsoft Edge process pointing to a Google Sites URL, or containing suspicious command line arguments often associated with malicious redirection or web-based credential harvesting.
This rule monitors network connections for specific domains and URL patterns associated with the 'FlowerStorm' campaign. It flags potential phishing attempts by identifying low-prevalence connections to known malicious infrastructure from browser or PDF reader processes.
Detects instances where Adobe Acrobat or Adobe Reader processes initiate suspicious child processes, such as common interpreters (PowerShell, CMD, WScript, CScript) or binaries (rundll32, browser executables) often used in malicious document-based attacks to achieve initial code execution.
Detects instances where Adobe Acrobat or Adobe Reader processes initiate suspicious child processes, such as common interpreters (PowerShell, CMD, WScript, CScript) or binaries (rundll32, browser executables) often used in malicious document-based attacks to achieve initial code execution.
This rule monitors network connections for specific domains and URL patterns associated with the 'FlowerStorm' campaign. It flags potential phishing attempts by identifying low-prevalence connections to known malicious infrastructure from browser or PDF reader processes.
This rule detects the Microsoft Edge browser (msedge.exe) being spawned by common productivity applications like Adobe Acrobat or Microsoft Outlook using the '--single-argument' command-line flag. This pattern is frequently used to force a specific browser window to open a malicious URL, which can be an indicator of a malicious document or phishing email attempting to direct the user to a credential harvesting or malware delivery site.
This rule detects the Microsoft Edge browser (msedge.exe) being spawned by common productivity applications like Adobe Acrobat or Microsoft Outlook using the '--single-argument' command-line flag. This pattern is frequently used to force a specific browser window to open a malicious URL, which can be an indicator of a malicious document or phishing email attempting to direct the user to a credential harvesting or malware delivery site.
This rule detects the Microsoft Edge browser (msedge.exe) being spawned by common productivity applications like Adobe Acrobat or Microsoft Outlook using the '--single-argument' command-line flag. This pattern is frequently used to force a specific browser window to open a malicious URL, which can be an indicator of a malicious document or phishing email attempting to direct the user to a credential harvesting or malware delivery site.
This rule detects instances where a PDF file located in the Outlook temporary internet cache is opened or accessed, followed shortly (within 3 minutes) by a network request from the device to a Google Sites URL. This behavior is indicative of a phishing attack where an email attachment redirects the user to a malicious site for credential harvesting or malware delivery.
This rule detects instances where a PDF file located in the Outlook temporary internet cache is opened or accessed, followed shortly (within 3 minutes) by a network request from the device to a Google Sites URL. This behavior is indicative of a phishing attack where an email attachment redirects the user to a malicious site for credential harvesting or malware delivery.
Detects access to files containing cleartext credentials on an administrative workstation, followed by their use to authenticate to a sensitive business system — the initial-access path CISA's red team used against SBS 1.
Detects instances where a Java process spawns a shell (cmd.exe, powershell.exe, sh, or bash) that executes suspicious commands often associated with remote code execution (RCE) patterns like those seen in Log4j exploitation. The rule excludes common Java-based build tools to reduce noise.
This rule detects the termination of specific security-related processes (e.g., antivirus services) shortly after a specific driver, 'ardrv.sys', is loaded on a Windows system. This sequence is characteristic of a 'Bring Your Own Vulnerable Driver' (BYOVD) attack, where an adversary loads a signed but vulnerable kernel driver to gain elevated privileges, which they then use to disable or terminate security monitoring processes.
Detects attempts to stop or reconfigure critical Windows security services (such as WinDefend, WscSvc, Sense, and WdNisSvc) using the Service Control Manager (sc.exe) or by modifying service registry keys via reg.exe. This behavior is indicative of an adversary attempting to disable EDR/AV solutions to evade detection.
Detects Python processes (python.exe, pythonw.exe, py.exe) executing with high or system integrity levels and interacting with named pipes, a technique often used for inter-process communication, persistence, or process injection.
Detects ERAAgent.exe (ESET Remote Administrator Agent) interacting with suspicious named pipes (e.g., mojo, spoolss) and attempts to extract credentials from command line parameters, indicating potential credential dumping or lateral movement techniques using the agent process.
This rule monitors the Windows Application event log for critical Microsoft SQL Server (MSSQL) events. It detects server crashes, access violations, stack overflows, and high-severity (20+) errors. These events often indicate severe database corruption, underlying system instability, or potential exploitation attempts targeting the database engine.
Detects instances where the SQL Server process (sqlservr.exe) initiates a child process that is a known command-line tool, script interpreter, or utility often used in living-off-the-land attacks, or when a child process is spawned from suspicious directory paths such as AppData, Temp, or Windows\Temp.
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