Any Powershell DownloadFile: endpointEndpointrisk_score:562024-09-30version:7
The following analytic detects the use of PowerShell's `DownloadFile` method to download files. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process execution logs. This activity is significant as it is commonly used in malicious frameworks to download and execute additional payloads. If confirmed malicious, this could lead to unauthorized code execution, data exfiltration, or further compromise of the system. Analysts should investigate the source and destination of the download and review AMSI or PowerShell transaction logs for additional context.
Windows Command Shell DCRat ForkBomb Payload: endpointEndpointrisk_score:812024-11-28version:4
The following analytic detects the execution of a DCRat "forkbomb" payload, which spawns multiple cmd.exe processes that launch notepad.exe instances in quick succession. This detection leverages Endpoint Detection and Response (EDR) data, focusing on the rapid creation of cmd.exe and notepad.exe processes within a 30-second window. This activity is significant as it indicates a potential DCRat infection, a known Remote Access Trojan (RAT) with destructive capabilities. If confirmed malicious, this behavior could lead to system instability, resource exhaustion, and potential disruption of services.
Windows High File Deletion Frequency: endpointEndpointrisk_score:722024-09-30version:4
The following analytic identifies a high frequency of file deletions by monitoring Sysmon EventCodes 23 and 26 for specific file extensions. This detection leverages Sysmon logs to track deleted target filenames, process names, and process IDs. Such activity is significant as it often indicates ransomware behavior, where files are encrypted and the originals are deleted. If confirmed malicious, this activity could lead to extensive data loss and operational disruption, as ransomware can render critical files inaccessible, demanding a ransom for their recovery.
Windows System Shutdown CommandLine: endpointEndpointrisk_score:492024-09-30version:4
The following analytic identifies the execution of the Windows shutdown command via the command line interface. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names and command-line arguments. This activity is significant because attackers may use the shutdown command to erase tracks, cause disruption, or ensure changes take effect after installing backdoors. If confirmed malicious, this activity could lead to system downtime, denial of service, or evasion of security tools, impacting the overall security posture of the network.
CMD Carry Out String Command Parameter: endpointEndpointrisk_score:302024-10-17version:6
The following analytic detects the use of `cmd.exe /c` to execute commands, a technique often employed by adversaries and malware to run batch commands or invoke other shells like PowerShell. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on command-line executions and process metadata. Monitoring this activity is crucial as it can indicate script-based attacks or unauthorized command execution. If confirmed malicious, this behavior could lead to unauthorized code execution, privilege escalation, or persistence within the environment.
Winword Spawning Cmd: endpointEndpointrisk_score:702024-11-28version:6
The following analytic identifies instances where Microsoft Word (winword.exe) spawns the command prompt (cmd.exe). This behavior is detected using Endpoint Detection and Response (EDR) telemetry, focusing on process creation events where the parent process is winword.exe. This activity is significant because it is uncommon and often associated with spearphishing attacks, where malicious attachments execute commands via cmd.exe. If confirmed malicious, this could allow an attacker to execute arbitrary commands, potentially leading to further system compromise, data exfiltration, or lateral movement within the network.
Windows Gather Victim Network Info Through Ip Check Web Services: endpointEndpointrisk_score:252024-11-28version:7
The following analytic detects processes attempting to connect to known IP check web services. This behavior is identified using Sysmon EventCode 22 logs, specifically monitoring DNS queries to services like "wtfismyip.com" and "ipinfo.io". This activity is significant as it is commonly used by malware, such as Trickbot, for reconnaissance to determine the infected machine's IP address. If confirmed malicious, this could allow attackers to gather network information, aiding in further attacks or lateral movement within the network.
Windows System LogOff Commandline: endpointEndpointrisk_score:562024-09-30version:3
The following analytic detects the execution of the Windows command line to log off a host machine. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on processes involving `shutdown.exe` with specific parameters. This activity is significant as it is often associated with Advanced Persistent Threats (APTs) and Remote Access Trojans (RATs) like dcrat, which use this technique to disrupt operations, aid in system destruction, or inhibit recovery. If confirmed malicious, this could lead to system downtime, data loss, or hindered incident response efforts.
Windows Ingress Tool Transfer Using Explorer: endpointEndpointrisk_score:252024-09-30version:5
The following analytic identifies instances where the Windows Explorer process (explorer.exe) is executed with a URL in its command line. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process execution logs. This activity is significant because adversaries, such as those using DCRat malware, may abuse explorer.exe to open URLs with the default browser, which is an uncommon and suspicious behavior. If confirmed malicious, this technique could allow attackers to download and execute malicious payloads, leading to potential system compromise and further malicious activities.
Suspicious Scheduled Task from Public Directory: endpointEndpointrisk_score:352024-09-30version:3
The following analytic identifies the creation of scheduled tasks that execute binaries or scripts from public directories, such as users\public, \programdata\, or \windows\temp, using schtasks.exe with the /create command. It leverages Sysmon Event ID 1 data to detect this behavior. This activity is significant because it often indicates an attempt to maintain persistence or execute malicious scripts, which are common tactics in malware deployment. If confirmed as malicious, this could lead to data compromise, unauthorized access, and potential lateral movement within the network.
Windows System Reboot CommandLine: endpointEndpointrisk_score:302024-09-30version:3
The following analytic identifies the execution of the Windows command line to reboot a host machine using "shutdown.exe" with specific parameters. 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 is often associated with advanced persistent threats (APTs) and remote access trojans (RATs) like dcrat, which may use system reboots to disrupt operations, aid in system destruction, or inhibit recovery. If confirmed malicious, this could lead to system downtime, data loss, or hindered incident response efforts.
Suspicious Process File Path: endpointEndpointrisk_score:352024-11-28version:5
The following analytic identifies processes running from file paths not typically associated with legitimate software. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on specific process paths within the Endpoint data model. This activity is significant because adversaries often use unconventional file paths to execute malicious code without requiring administrative privileges. If confirmed malicious, this behavior could indicate an attempt to bypass security controls, leading to unauthorized software execution, potential system compromise, and further malicious activities within the environment.
Malicious PowerShell Process - Execution Policy Bypass: endpointEndpointrisk_score:422024-09-30version:7
The following analytic detects PowerShell processes initiated with parameters that bypass the local execution policy for scripts. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on command-line executions containing specific flags like "-ex" or "bypass." This activity is significant because bypassing execution policies is a common tactic used by attackers to run malicious scripts undetected. If confirmed malicious, this could allow an attacker to execute arbitrary code, potentially leading to further system compromise, data exfiltration, or persistent access within the environment.
Executables Or Script Creation In Suspicious Path: endpointEndpointrisk_score:202024-11-28version:5
The following analytic identifies the creation of executables or scripts in suspicious file paths on Windows systems. It leverages the Endpoint.Filesystem data model to detect files with specific extensions (e.g., .exe, .dll, .ps1) created in uncommon directories (e.g., \windows\fonts\, \users\public\). This activity is significant as adversaries often use these paths to evade detection and maintain persistence. If confirmed malicious, this behavior could allow attackers to execute unauthorized code, escalate privileges, or persist within the environment, posing a significant security threat.
Office Document Executing Macro Code: endpointEndpointrisk_score:352024-09-30version:7
The following analytic identifies office documents executing macro code. It leverages Sysmon EventCode 7 to detect when processes like WINWORD.EXE or EXCEL.EXE load specific DLLs associated with macros (e.g., VBE7.DLL). This activity is significant because macros are a common attack vector for delivering malicious payloads, such as malware. If confirmed malicious, this could lead to unauthorized code execution, data exfiltration, or further compromise of the system. Disabling macros by default is recommended to mitigate this risk.
Winword Spawning PowerShell: endpointEndpointrisk_score:702024-11-28version:6
The following analytic identifies instances where Microsoft Word (winword.exe) spawns a PowerShell process. This behavior is detected using Endpoint Detection and Response (EDR) telemetry, focusing on process creation events where the parent process is winword.exe. This activity is significant because it is uncommon and often associated with spearphishing attacks, where malicious documents execute encoded PowerShell commands. If confirmed malicious, this could allow an attacker to execute arbitrary code, potentially leading to data exfiltration, system compromise, or further lateral movement within the network.
Windows System Time Discovery W32tm Delay: endpointEndpointrisk_score:362024-09-30version:3
The following analytic identifies the use of the w32tm.exe utility with the /stripchart function, which is indicative of DCRat malware delaying its payload execution. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on specific command-line arguments used by w32tm.exe. This activity is significant as it may indicate an attempt to evade detection by delaying malicious actions such as C2 communication and beaconing. If confirmed malicious, this behavior could allow an attacker to maintain persistence and execute further malicious activities undetected.
WinEvent Windows Task Scheduler Event Action Started: endpointEndpointrisk_score:802024-10-24version:5
The following analytic detects the execution of tasks registered in Windows Task Scheduler by monitoring EventID 200 (action run) and 201 (action completed) from the Task Scheduler logs. This detection leverages Task Scheduler logs to identify potentially suspicious or unauthorized task executions. Monitoring these events is significant for a SOC as it helps uncover evasive techniques used for persistence, unauthorized code execution, or other malicious activities. If confirmed malicious, this activity could lead to unauthorized access, data exfiltration, or the execution of harmful payloads, posing a significant threat to the environment.
Office Product Spawn CMD Process: endpointEndpointrisk_score:562024-09-30version:7
The following analytic detects an Office product spawning a CMD process, which is indicative of a macro executing shell commands to download or run malicious code. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process and parent process names. This activity is significant as it often signals the execution of malicious payloads, such as those seen in Trickbot spear-phishing campaigns. If confirmed malicious, this behavior could lead to unauthorized code execution, potentially compromising the system and allowing further malicious activities.
Malicious PowerShell Process - Encoded Command: endpointEndpointrisk_score:352024-10-17version:11
The following analytic detects the use of the EncodedCommand parameter in PowerShell processes. It leverages Endpoint Detection and Response (EDR) data to identify variations of the EncodedCommand parameter, including shortened forms and different command switch types. This activity is significant because adversaries often use encoded commands to obfuscate malicious scripts, making detection harder. If confirmed malicious, this behavior could allow attackers to execute hidden code, potentially leading to unauthorized access, privilege escalation, or persistent threats within the environment. Review parallel events to determine legitimacy and tune based on known administrative scripts.
Scheduled Task Deleted Or Created via CMD: endpointEndpointrisk_score:562024-09-30version:8
The following analytic identifies the creation or deletion of scheduled tasks using the schtasks.exe utility with the -create or -delete flags. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names and command-line executions. This activity is significant as it can indicate unauthorized system manipulation or malicious intent, often associated with threat actors like Dragonfly and incidents such as the SUNBURST attack. If confirmed malicious, this activity could allow attackers to execute code, escalate privileges, or persist within the environment, posing a significant security risk.
Windows Gather Victim Host Information Camera: endpointEndpointrisk_score:422024-09-30version:4
The following analytic detects a PowerShell script that enumerates camera devices on the targeted host. This detection leverages PowerShell Script Block Logging, specifically looking for commands querying Win32_PnPEntity for camera-related information. This activity is significant as it is commonly observed in DCRat malware, which collects camera data to send to its command-and-control server. If confirmed malicious, this behavior could indicate an attempt to gather sensitive visual information from the host, potentially leading to privacy breaches or further exploitation.
Windows Common Abused Cmd Shell Risk Behavior: endpointEndpointrisk_score:492024-09-30version:3
The following analytic identifies instances where four or more distinct detection analytics are associated with malicious command line behavior on a specific host. This detection leverages the Command Line Interface (CLI) data from various sources to identify suspicious activities. This behavior is significant as it often indicates attempts to execute malicious commands, access sensitive data, install backdoors, or perform other nefarious actions. If confirmed malicious, attackers could gain unauthorized control, exfiltrate information, escalate privileges, or launch further attacks within the network, leading to severe compromise.
