Query: detect Detects the use of the EnableRegion command in AWS CloudTrail logs. While AWS has 30+ regions, some of them are enabled in logs
Matching passage: Sigma rule: Detects the use of the EnableRegion command in AWS CloudTrail logs. While AWS has 30+ regions, some of them are enabled. Logsource: aws / cloudtrail. Rule: title: AWS EnableRegion Command Monitoring id: a5ffb6ea-c784-4e01-b30a-deb6e58ca2ab status: experimental description: 'Detects the use of the EnableRegion command in AWS CloudTrail logs. While AWS has 30+ regions, some of them are enabled by default, others must be explicitly enabled in each account separately. There may be situations where security monitoring does not cover some new AWS regions. Monitoring the EnableRegion command is important for identifying potential persistence mechanisms employed by adversaries, as enabling additional regions can facilitate continued access and operations within an AWS environment. ' references: - https://docs.aws.amazon.com/accounts/latest/reference/API_EnableRegion.html - https://awscli.amazonaws.com/v2/documentation/api/2.14.0/reference/account/enable-region.html author: Ivan Saakov, Sergey Zelenskiy date: 2025-10-19 tags: - attack.persistence logsource: product: aws service: cloudtrail detection: selection: eventName: EnableRegion eventSource: account.amazonaws.com condition: selection falsepositives: - Legitimate use of the EnableRegion command by authorized administrators. level: medium
Near-miss passage: Sigma rule: Detects the creation of the "accepteula" key related to the Sysinternals tools being created from executables with the w. Logsource: windows / registry_set. Rule: title: Suspicious Execution Of Renamed Sysinternals Tools - Registry id: f50f3c09-557d-492d-81db-9064a8d4e211 related: - id: 25ffa65d-76d8-4da5-a832-3f2b0136e133 type: derived - id: 8023f872-3f1d-4301-a384-801889917ab4 type: similar status: test description: Detects the creation of the "accepteula" key related to the Sysinternals tools being created from executables with the wrong name (e.g. a renamed Sysinternals tool) references: - Internal Research author: Nasreddine Bencherchali (Nextron Systems) date: 2022-08-24 modified: 2026-06-29 tags: - attack.resource-development - attack.t1588.002 logsource: product: windows category: registry_set detection: selection: TargetObject|contains: - \Active Directory Explorer - \Handle - \LiveKd - \ProcDump - \Process Explorer - \PsExec - \PsLoggedon - \PsLoglist - \PsPasswd - \PsPing - \PsService - \SDelete TargetObject|endswith: \EulaAccepted filter: Image|endswith: - \ADExplorer.exe - \ADExplorer64.exe - \ADExplorer64a.exe - \handle.exe - \handle64.exe - \handle64a.exe - \livekd.exe - \livekd64.exe - \procdump.exe - \procdump64.exe - \procdump64a.exe - \procexp.exe - \procexp64.exe - \procexp64a.exe - \PsExec.exe - \PsExec64.exe - \PsExec64a.exe - \PsLoggedon.exe - \PsLoggedon64.exe - \psloglist.exe - \psloglist64.exe - \psloglist64a.exe - \pspasswd.exe - \pspasswd64.exe - \pspasswd64a.exe - \PsPing.exe - \PsPing64.exe - \PsPing64a.exe - \PsService.exe - \PsService64.exe - \PsService64a.exe - \sdelete.exe condition: selection and not filter falsepositives: - Unlikely level: high regression_tests_path: regression_data/rules/windows/registry/registry_set/registry_set_pua_sysinternals_renamed_execution_via_eula/info.yml