Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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The following analytic detects the execution of the chcp.com utility, which is used to change the active code page of the console. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process creation events. This activity is significant because it can indicate the presence of malware, such as IcedID, which uses this technique to determine the locale region, language, or country of the compromised host. If confirmed malicious, this could lead to further system compromise and data exfiltration.
The following analytic detects the execution of the remote desktop process (mstsc.exe) on systems where it is not typically run. This detection leverages data from Endpoint Detection and Response (EDR) agents, filtering out systems categorized as common RDP sources. This activity is significant because unauthorized use of mstsc.exe can indicate lateral movement or unauthorized remote access attempts. If confirmed malicious, this could allow an attacker to gain remote control of a system, potentially leading to data exfiltration, privilege escalation, or further network compromise.
This detection identifies the use of attrib.exe to remove hidden (-h) or system (-s) attributes from the Default.rdp file, which is automatically created in a user's Documents folder when a Remote Desktop Protocol (RDP) session is initiated using mstsc.exe. The Default.rdp file stores session configuration details such as the remote host address and screen settings. Unhiding this file is uncommon in normal user behavior and may indicate that an attacker or red team operator is attempting to access or manipulate RDP connection history that was previously hidden—either by default or as part of an earlier anti-forensics effort. This activity may represent part of a broader pattern of reconnaissance or staging for credential reuse, lateral movement, or forensic analysis evasion. Monitoring for this behavior can help uncover suspicious manipulation of user artifacts and highlight interactive attacker activity on a compromised host.
The analytic detects the execution of the 'gdrive' tool on a Linux host. This tool allows standard users to perform tasks associated with Google Drive via the command line, such as downloading, uploading, listing, updating, syncing, sharing, and managing accounts or files. Adversaries can use this tool to stage other tools or exfiltrate data. The detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names and command-line executions. If confirmed malicious, this activity could lead to system compromise or sensitive data theft.
The analytic detects the execution of the 'gdrive' tool on a Windows host. This tool allows standard users to perform tasks associated with Google Drive via the command line, such as downloading, uploading, listing, updating, syncing, sharing, and managing accounts or files. Adversaries commonly use this tool to stage other tools or exfiltrate data. Detection leverages Endpoint Detection and Response (EDR) agents, focusing on process names and command-line executions. If confirmed malicious, this activity could lead to system compromise or sensitive data theft.
The following analytic detects the use of the mstsc.exe command-line, which is commonly used to initiate Remote Desktop Protocol (RDP) connections. This detection focuses on instances where mstsc.exe is executed with specific parameters that may indicate suspicious or unauthorized remote access attempts. Monitoring command-line arguments such as /v:<target> for direct connections or /admin for administrative sessions can help identify potential misuse or lateral movement within a network.
This analytic detects the execution of processes with file or code signing attributes from known remote access software within the environment. It leverages Sysmon EventCode 1 data and cross-references a lookup table of remote access utilities such as AnyDesk, GoToMyPC, LogMeIn, and TeamViewer. This activity is significant as adversaries often use these tools to maintain unauthorized remote access. If confirmed malicious, this could allow attackers to persist in the environment, potentially leading to data exfiltration or further compromise of the network.
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 analytic identifies the execution of the native mimikatz.exe binary on Windows systems, including instances where the binary is renamed. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names and original file names. This activity is significant because Mimikatz is a widely used tool for extracting authentication credentials, posing a severe security risk. If confirmed malicious, this activity could allow attackers to obtain sensitive credentials, escalate privileges, and move laterally within the network, leading to potential data breaches and system compromise.
The following analytic identifies command-line activity that searches for files related to password manager software, such as "*.kdbx*" and "*credential*". It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process execution logs. This activity is significant because attackers often target password manager databases to extract stored credentials, which can be used for further exploitation. If confirmed malicious, this behavior could lead to unauthorized access to sensitive information, enabling attackers to escalate privileges, move laterally, or exfiltrate critical data.
The following analytic detects modifications to the Windows firewall to enable Remote Desktop Protocol (RDP) on a targeted machine. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on command-line executions involving "netsh.exe" to allow TCP port 3389. This activity is significant as it may indicate an adversary attempting to gain remote access to a compromised host, a common tactic for lateral movement. If confirmed malicious, this could allow attackers to remotely control the system, leading to potential data exfiltration or further network compromise.
The analytic detects the execution of `cipher.exe` with the `/w` flag to clear unallocated sectors on a disk. This activity is a technique used by ransomware to prevent forensic recovery of deleted files, hindering incident response efforts by making it impossible to recover critical data.
The analytic detects the execution of the RDPWInst.exe tool, which is an RDP wrapper library used to enable remote desktop host support and concurrent RDP sessions. Adversaries can abuse this tool to establish unauthorized RDP connections, facilitating remote access and potential lateral movement within the network. If confirmed malicious, this could lead to unauthorized access, data exfiltration, and further compromise of the targeted host.
The following analytic detects the execution of the sdelete.exe application, a Sysinternals tool often used by adversaries to securely delete files and remove forensic evidence from a targeted host. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process execution logs. Monitoring this activity is crucial as sdelete.exe is not commonly used in regular operations and its presence may indicate an attempt to cover malicious activities. If confirmed malicious, this could lead to the loss of critical forensic data, hindering incident response and investigation efforts.
The following analytic detects suspicious PowerShell activity via EventCode 4104, where WMI performs event queries to gather information on running processes or services. This detection leverages PowerShell Script Block Logging to identify specific WMI queries targeting system information classes like Win32_Bios and Win32_OperatingSystem. This activity is significant as it often indicates reconnaissance efforts by an adversary to profile the compromised machine. If confirmed malicious, the attacker could gain detailed system information, aiding in further exploitation or lateral movement within the network.
The following analytic detects the usage of wevtutil.exe with parameters for clearing event logs such as Application, Security, Setup, Trace, or System. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names and command-line arguments. This activity is significant because clearing event logs can be an attempt to cover tracks after malicious actions, hindering forensic investigations. If confirmed malicious, this behavior could allow an attacker to erase evidence of their activities, making it difficult to trace their actions and understand the full scope of the compromise.
The following analytic detects the creation or modification of Windows services using the sc.exe command. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names and command-line arguments. This activity is significant because manipulating Windows services can be a method for attackers to establish persistence, escalate privileges, or execute arbitrary code. If confirmed malicious, this behavior could allow an attacker to maintain long-term access, disrupt services, or gain control over critical system functions, posing a severe threat to the environment.
The following analytic detects the execution of scripts via Windows Management Instrumentation (WMI) by monitoring the process 'scrcons.exe'. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process creation events. WMI-based script execution is significant because adversaries often use it to perform malicious activities stealthily, such as system compromise, data exfiltration, or establishing persistence. If confirmed malicious, this activity could allow attackers to execute arbitrary code, escalate privileges, or maintain long-term access to the environment. Analysts should differentiate between legitimate administrative use and potential threats.
The following analytic detects the creation of registry artifacts when an ISO container is opened, clicked, or mounted on a Windows operating system. It leverages data from the Endpoint.Registry data model, specifically monitoring registry keys related to recent ISO or IMG file executions. This activity is significant as adversaries increasingly use container-based phishing campaigns to bypass macro-based document execution controls. If confirmed malicious, this behavior could indicate an initial access attempt, potentially leading to further exploitation, persistence, or data exfiltration within the environment.
The analytic detects the execution of `arp.exe` with the `-a` flag, which is used to list network connections on a compromised system. This activity is significant because both Red Teams and adversaries use `arp.exe` for situational awareness and Active Directory discovery. If confirmed malicious, this activity could allow attackers to map the network, identify active devices, and plan further lateral movement or attacks.
The analytic detects the execution of `wmic.exe` with command-line arguments used to query for domain users. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on specific command-line patterns indicative of domain account discovery. This activity is significant as it often precedes lateral movement or privilege escalation attempts by adversaries. If confirmed malicious, this behavior could allow attackers to map out user accounts within the domain, facilitating further attacks and potentially compromising sensitive information.
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