Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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The following analytic identifies the modification of security permissions
on files or directories using tools like icacls.exe, cacls.exe, or xcacls.exe. It
leverages data from Endpoint Detection and Response (EDR) agents, focusing on specific
command-line executions. This activity is significant as it is commonly used by
Advanced Persistent Threats (APTs) and coinminer scripts to evade detection and
maintain control over compromised systems. If confirmed malicious, this behavior
could allow attackers to hinder investigation, impede remediation efforts, and maintain
persistent access to the compromised environment.
on files or directories using tools like icacls.exe, cacls.exe, or xcacls.exe. It
leverages data from Endpoint Detection and Response (EDR) agents, focusing on specific
command-line executions. This activity is significant as it is commonly used by
Advanced Persistent Threats (APTs) and coinminer scripts to evade detection and
maintain control over compromised systems. If confirmed malicious, this behavior
could allow attackers to hinder investigation, impede remediation efforts, and maintain
persistent access to the compromised environment.
An attacker can obtain persistence by hijacking the PowerShell cmdlet 'Get-Variable' by placing Get-Variable.exe in the WindowsApps folder, which is part of the PowerShell path.
Whenever a PowerShell window is opened via a scheduled task, the malicious Get-Variable.exe will be run.
This activity was first associated with the Colibri malware.
Whenever a PowerShell window is opened via a scheduled task, the malicious Get-Variable.exe will be run.
This activity was first associated with the Colibri malware.
By default, the Windows guest account is heavily restricted, with limited permissions and access to system resources.
However, if the guest account is activated, it can potentially be used to perform malicious activities such as installing malware, deleting files, stealing data, or even taking control of the system.
However, if the guest account is activated, it can potentially be used to perform malicious activities such as installing malware, deleting files, stealing data, or even taking control of the system.
The following analytic detects the disabling of an AutoLogger session or one of its providers, by identifying changes to the Registry values "Start" and "Enabled" part of the "\WMI\Autologger\" key path. It leverages data from the Endpoint.Registry datamodel to monitor specific registry paths and values. This activity is significant as attackers and adversaries can leverage this in order to evade defense and blind EDRs and log ingest tooling. If confirmed malicious, this action could allow an attacker to conceal their activities, making it harder to detect further malicious actions and maintain persistence on the compromised endpoint.
The following analytic detects the disabling of Hypervisor-protected Code Integrity (HVCI) by monitoring changes in the Windows registry. It leverages data from the Endpoint datamodel, specifically focusing on registry paths and values related to HVCI settings. This activity is significant because HVCI helps protect the kernel and system processes from tampering by malicious code. If confirmed malicious, disabling HVCI could allow attackers to execute unsigned kernel-mode code, potentially leading to kernel-level rootkits or other severe security breaches.
The following analytic detects excessive usage of the forfiles.exe process, which is often indicative of post-exploitation activities. The detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process execution logs that include process GUID, process name, and parent process. This activity is significant because forfiles.exe can be abused to execute commands on multiple files, a technique used by ransomware like Prestige. If confirmed malicious, this behavior could allow attackers to enumerate files, potentially leading to data exfiltration or further malicious actions.
The following analytic detects the execution of InstallUtil.exe from non-standard paths. It leverages Endpoint Detection and Response (EDR) data, focusing on process names and original file names outside typical directories. This activity is significant because InstallUtil.exe is often used by attackers to execute malicious code or scripts. If confirmed malicious, this behavior could allow an attacker to bypass security controls, execute arbitrary code, and potentially gain unauthorized access or persist within the environment.
The following analytic detects the use of the Windows InstallUtil.exe binary with the `/u` (uninstall) switch, which can execute code while bypassing application control. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names, parent processes, and command-line executions. This activity is significant because it can indicate an attempt to execute malicious code without administrative privileges. If confirmed malicious, an attacker could achieve code execution, potentially leading to further system compromise or persistence within the environment.
The following analytic identifies the use of Ldifde.exe, a command-line utility for creating, modifying, or deleting LDAP directory objects. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process execution and command-line arguments. Monitoring Ldifde.exe is significant because it can be used by attackers to manipulate directory objects, potentially leading to unauthorized changes or data exfiltration. If confirmed malicious, this activity could allow an attacker to gain control over directory services, escalate privileges, or access sensitive information within the network.
The following analytic detects modifications to the Windows registry key "AuthenticationLevelOverride" within the Terminal Server Client settings. It leverages data from the Endpoint.Registry datamodel to identify changes where the registry value is set to 0x00000000. This activity is significant as it may indicate an attempt to override authentication levels for remote connections, a tactic used by DarkGate malware for malicious installations. If confirmed malicious, this could allow attackers to gain unauthorized remote access, potentially leading to data exfiltration or further system compromise.
The following analytic detects modifications to the Windows registry that disable toast notifications. It leverages data from the Endpoint.Registry datamodel, specifically monitoring changes to the registry path "*\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\PushNotifications\\ToastEnabled*" with a value set to "0x00000000". This activity is significant because disabling toast notifications can prevent users from receiving critical system and application updates, which adversaries like Azorult exploit for defense evasion. If confirmed malicious, this action could allow attackers to operate undetected, leading to prolonged persistence and potential further compromise of the system.
The following analytic detects the execution of msiexec.exe with the /y switch parameter, which enables the loading of DLLRegisterServer. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process command-line arguments and parent-child process relationships. This activity is significant because it can indicate an attempt to register malicious DLLs, potentially leading to code execution or persistence on the system. If confirmed malicious, this could allow an attacker to execute arbitrary code, escalate privileges, or maintain persistence within the environment.
The following analytic detects the use of msiexec.exe with the /z switch parameter, which is used to unload DLLRegisterServer. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process execution logs, including command-line arguments. This activity is significant because unloading DLLRegisterServer can be indicative of an attempt to deregister a DLL, potentially disrupting legitimate services or hiding malicious activity. If confirmed malicious, this could allow an attacker to disable security controls, evade detection, or disrupt system functionality, leading to further compromise of the environment.
The following analytic identifies the execution of Odbcconf.exe within the environment. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process creation events where the process name is Odbcconf.exe. This activity is significant because Odbcconf.exe can be used by attackers to execute arbitrary commands or load malicious DLLs, potentially leading to code execution or persistence. If confirmed malicious, this behavior could allow an attacker to maintain access to the system, execute further malicious activities, or escalate privileges, posing a significant threat to the environment.
The following analytic detects the execution of odbcconf.exe with the regsvr action to load a DLL. This is identified by monitoring command-line arguments in process creation logs from Endpoint Detection and Response (EDR) agents. This activity is significant as it may indicate an attempt to execute arbitrary code via DLL loading, a common technique used in various attack vectors. If confirmed malicious, this could allow an attacker to execute code with the privileges of the odbcconf.exe process, potentially leading to system compromise or further lateral movement.
The following analytic detects the execution of odbcconf.exe with a response file, which may contain commands to load a DLL (REGSVR) or other instructions. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names and command-line arguments. This activity is significant as it may indicate an attempt to execute arbitrary code or load malicious DLLs, potentially leading to unauthorized actions. If confirmed malicious, this could allow an attacker to gain code execution, escalate privileges, or establish persistence within the environment.
The following analytic detects potential RDP Hijacking attempts by identifying the creation of a Windows service using sc.exe with a binary path that includes tscon.exe. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process creation events and command-line arguments. This activity is significant as it indicates an attacker may be trying to hijack a disconnected RDP session, posing a risk of unauthorized access. If confirmed malicious, the attacker could gain control over an existing user session, leading to potential data theft or further system compromise.
The following analytic detects the modification of registry keys that define Windows services using reg.exe. This detection leverages Splunk to search for specific keywords in the registry path, value name, and value data fields. This activity is significant because it indicates potential unauthorized changes to service configurations, a common persistence technique used by attackers. If confirmed malicious, this could allow an attacker to maintain access, escalate privileges, or move laterally within the network, leading to data theft, ransomware, or other damaging outcomes.
The following analytic identifies the execution of RemCom.exe, an open-source alternative to PsExec, used for lateral movement and remote command execution. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names, original file names, and command-line arguments. This activity is significant as it indicates potential lateral movement within the network. If confirmed malicious, this could allow an attacker to execute commands remotely, potentially leading to further compromise and control over additional systems within the network.
The following analytic identifies attempts to stop services on a system using `net.exe`, `sc.exe` or the "Stop-Service" cmdlet. It leverages Endpoint Detection and Response (EDR) telemetry. This activity can be significant as adversaries often terminate security or critical services to evade detection and further their objectives. If confirmed malicious, this behavior could allow attackers to disable security defenses, facilitate ransomware encryption, or disrupt essential services, leading to potential data loss or system compromise.
The following analytic detects the creation of the comadmin.dat file in the %windows%\system32\Com directory, which is associated with Snake Malware. This detection leverages the Endpoint.Filesystem data model to identify file creation events matching the specified path and filename. This activity is significant because the comadmin.dat file is part of Snake Malware's installation process, which includes dropping a kernel driver and a custom DLL. If confirmed malicious, this activity could allow an attacker to load a malicious driver, potentially leading to privilege escalation and persistent access to the compromised system.
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