diff --git a/detections/endpoint/bcdedit_failure_recovery_modification.yml b/detections/endpoint/bcdedit_failure_recovery_modification.yml index bb42818422..84898da41b 100644 --- a/detections/endpoint/bcdedit_failure_recovery_modification.yml +++ b/detections/endpoint/bcdedit_failure_recovery_modification.yml @@ -1,8 +1,10 @@ name: BCDEdit Failure Recovery Modification -id: +id: null version: 1 date: '2020-12-21' -description: This search looks for flags passed to bcdedit.exe modifications to the built-in Windows error recovery boot configurations. This is typically used by ransomware to prevent recovery. +description: This search looks for flags passed to bcdedit.exe modifications to the + built-in Windows error recovery boot configurations. This is typically used by ransomware + to prevent recovery. how_to_implement: You must be ingesting endpoint data that tracks process activity, including parent-child relationships from your endpoints to populate the Endpoint data model in the Processes node. Tune based on parent process names. @@ -12,9 +14,11 @@ references: author: Michael Haag, Splunk search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes where Processes.process_name = bcdedit.exe - Processes.process="*recoveryenabled*" (Processes.process="* no*") by Processes.process_name Processes.process Processes.parent_process_name - Processes.dest Processes.user | `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `bcdedit_failure_recovery_modification_filter`' -known_false_positives: Administrators may modify the boot configuration. + Processes.process="*recoveryenabled*" (Processes.process="* no*") by Processes.process_name + Processes.process Processes.parent_process_name Processes.dest Processes.user | + `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` + | `bcdedit_failure_recovery_modification_filter`' +known_false_positives: Administrators may modify the boot configuration. tags: analytics_story: - Ryuk Ransomware @@ -31,3 +35,4 @@ tags: asset_type: Endpoint dataset: - https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1490/atomic_red_team/windows-sysmon.log + automated_detection_testing: passed