diff --git a/detections/endpoint/windows_high_file_deletion_frequency.yml b/detections/endpoint/windows_high_file_deletion_frequency.yml index 47e6e0d8a7..dbfe3341c6 100644 --- a/detections/endpoint/windows_high_file_deletion_frequency.yml +++ b/detections/endpoint/windows_high_file_deletion_frequency.yml @@ -33,6 +33,7 @@ tags: - Swift Slicer - Data Destruction - WhisperGate + - Sandworm Tools asset_type: Endpoint confidence: 80 impact: 90 diff --git a/detections/endpoint/windows_system_shutdown_commandline.yml b/detections/endpoint/windows_system_shutdown_commandline.yml index cf3dd29f53..32d0824149 100644 --- a/detections/endpoint/windows_system_shutdown_commandline.yml +++ b/detections/endpoint/windows_system_shutdown_commandline.yml @@ -1,22 +1,25 @@ name: Windows System Shutdown CommandLine id: 4fee57b8-d825-4bf3-9ea8-bf405cdb614c -version: 1 -date: '2022-07-27' +version: 2 +date: '2023-06-20' author: Teoderick Contreras, Splunk status: production type: Anomaly -description: The following analytic identifies Windows commandline to shutdown a windows - host machine. This technique was seen in several APT, RAT like dcrat and other commodity - malware to shutdown the machine to add more impact, interrupt access, aid destruction - of the system like wiping disk or inhibit system recovery. This TTP is a good pivot - to check why application trigger this commandline which is not so common way to - shutdown a machine. +description: This detection rule is designed to identify the execution of the Windows shutdown command via command line interface. + The shutdown command can be utilized by system administrators to properly halt, power off, or reboot a computer. + However, in a security context, attackers who have gained unauthorized access to a system may also use this command in an effort to erase tracks, + or to cause disruption and denial of service. In some instances, they might execute the shutdown command after installing a backdoor, + to force the system to restart, ensuring that changes take effect or evading detection by security tools. + Monitoring for the use of the Windows shutdown command, especially in conjunction with other unusual or unauthorized activities, + can be an important part of identifying malicious behavior within a network. + It is advised that security professionals analyze the context in which the shutdown command is being executed to differentiate between + legitimate administrative functions and potentially malicious activity. data_source: - Sysmon Event ID 1 search: '| tstats `security_content_summariesonly` values(Processes.process) as process min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes where (Processes.process_name = shutdown.exe OR Processes.original_file_name = shutdown.exe) - Processes.process="*shutdown*" Processes.process="* /s*" Processes.process="* /t*" + Processes.process="*shutdown*" AND Processes.process IN("* /s*", "* -s*", "* /r*", "* -r*") AND Processes.process="* /t*" by Processes.dest Processes.user Processes.parent_process Processes.process_name Processes.original_file_name Processes.process Processes.process_id Processes.parent_process_id | `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` @@ -34,6 +37,7 @@ references: tags: analytic_story: - DarkCrystal RAT + - Sandworm Tools asset_type: Endpoint confidence: 70 impact: 70