IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Suspicious PowerShell Engine ImageLoad
editSuspicious PowerShell Engine ImageLoad
editIdentifies the PowerShell engine being invoked by unexpected processes. Rather than executing PowerShell functionality with powershell.exe, some attackers do this to operate more stealthily.
Rule type: eql
Rule indices:
- logs-endpoint.events.*
- winlogbeat-*
- logs-windows.*
Severity: medium
Risk score: 47
Runs every: 5 minutes
Searches indices from: now-9m (Date Math format, see also Additional look-back time
)
Maximum alerts per execution: 100
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Execution
Version: 4 (version history)
Added (Elastic Stack release): 7.11.0
Last modified (Elastic Stack release): 7.14.0
Rule authors: Elastic
Rule license: Elastic License v2
Rule query
editlibrary where dll.name : ("System.Management.Automation.ni.dll", "System.Management.Automation.dll") and /* add false positives relevant to your environment here */ not process.executable : ("C:\\Windows\\System32\\RemoteFXvGPUDisablement.exe", "C:\\Windows\\System32\\sdiagnhost.exe") and not process.executable regex~ """C:\\Program Files( \(x86\))?\\*\.exe""" and not process.name : ( "Altaro.SubAgent.exe", "AppV_Manage.exe", "azureadconnect.exe", "CcmExec.exe", "configsyncrun.exe", "choco.exe", "ctxappvservice.exe", "DVLS.Console.exe", "edgetransport.exe", "exsetup.exe", "forefrontactivedirectoryconnector.exe", "InstallUtil.exe", "JenkinsOnDesktop.exe", "Microsoft.EnterpriseManagement.ServiceManager.UI.Console.exe", "mmc.exe", "mscorsvw.exe", "msexchangedelivery.exe", "msexchangefrontendtransport.exe", "msexchangehmworker.exe", "msexchangesubmission.exe", "msiexec.exe", "MsiExec.exe", "noderunner.exe", "NServiceBus.Host.exe", "NServiceBus.Host32.exe", "NServiceBus.Hosting.Azure.HostProcess.exe", "OuiGui.WPF.exe", "powershell.exe", "powershell_ise.exe", "pwsh.exe", "SCCMCliCtrWPF.exe", "ScriptEditor.exe", "ScriptRunner.exe", "sdiagnhost.exe", "servermanager.exe", "setup100.exe", "ServiceHub.VSDetouredHost.exe", "SPCAF.Client.exe", "SPCAF.SettingsEditor.exe", "SQLPS.exe", "telemetryservice.exe", "UMWorkerProcess.exe", "w3wp.exe", "wsmprovhost.exe" )
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Execution
- ID: TA0002
- Reference URL: https://attack.mitre.org/tactics/TA0002/
-
Technique:
- Name: Command and Scripting Interpreter
- ID: T1059
- Reference URL: https://attack.mitre.org/techniques/T1059/
Rule version history
edit- Version 4 (7.14.0 release)
-
-
Updated query, changed from:
library where dll.name : ("System.Management.Automation.ni.dll", "System.Management.Automation.dll") and /* add false positives relevant to your environment here */ not process.executable : ("C:\\Windows\\System32\\RemoteFXvGPUDisablement.exe", "C:\\Windows\\System32\\sdiagnhost.exe", "C:\\Program Files*\\*.exe") and not process.name : ( "Altaro.SubAgent.exe", "AppV_Manage.exe", "azureadconnect.exe", "CcmExec.exe", "configsyncrun.exe", "choco.exe", "ctxappvservice.exe", "DVLS.Console.exe", "edgetransport.exe", "exsetup.exe", "forefrontactivedirectoryconnector.exe", "InstallUtil.exe", "JenkinsOnDesktop.exe", "Microsoft.EnterpriseManagement.ServiceManager.UI.Console.exe", "mmc.exe", "mscorsvw.exe", "msexchangedelivery.exe", "msexchangefrontendtransport.exe", "msexchangehmworker.exe", "msexchangesubmission.exe", "msiexec.exe", "MsiExec.exe", "noderunner.exe", "NServiceBus.Host.exe", "NServiceBus.Host32.exe", "NServiceBus.Hosting.Azure.HostProcess.exe", "OuiGui.WPF.exe", "powershell.exe", "powershell_ise.exe", "pwsh.exe", "SCCMCliCtrWPF.exe", "ScriptEditor.exe", "ScriptRunner.exe", "sdiagnhost.exe", "servermanager.exe", "setup100.exe", "ServiceHub.VSDetouredHost.exe", "SPCAF.Client.exe", "SPCAF.SettingsEditor.exe", "SQLPS.exe", "telemetryservice.exe", "UMWorkerProcess.exe", "w3wp.exe", "wsmprovhost.exe" )
-
- Version 3 (7.12.0 release)
-
-
Updated query, changed from:
library where file.name : ("System.Management.Automation.ni.dll", "System.Management.Automation.dll") and /* add false positives relevant to your environment here */ not process.executable : ("C:\\Windows\\System32\\RemoteFXvGPUDisablement.exe", "C:\\Windows\\System32\\sdiagnhost.exe", "C:\\Program Files*\\*.exe") and not process.name : ( "Altaro.SubAgent.exe", "AppV_Manage.exe", "azureadconnect.exe", "CcmExec.exe", "configsyncrun.exe", "choco.exe", "ctxappvservice.exe", "DVLS.Console.exe", "edgetransport.exe", "exsetup.exe", "forefrontactivedirectoryconnector.exe", "InstallUtil.exe", "JenkinsOnDesktop.exe", "Microsoft.EnterpriseManagement.ServiceManager.UI.Console.exe", "mmc.exe", "mscorsvw.exe", "msexchangedelivery.exe", "msexchangefrontendtransport.exe", "msexchangehmworker.exe", "msexchangesubmission.exe", "msiexec.exe", "MsiExec.exe", "noderunner.exe", "NServiceBus.Host.exe", "NServiceBus.Host32.exe", "NServiceBus.Hosting.Azure.HostProcess.exe", "OuiGui.WPF.exe", "powershell.exe", "powershell_ise.exe", "pwsh.exe", "SCCMCliCtrWPF.exe", "ScriptEditor.exe", "ScriptRunner.exe", "sdiagnhost.exe", "servermanager.exe", "setup100.exe", "ServiceHub.VSDetouredHost.exe", "SPCAF.Client.exe", "SPCAF.SettingsEditor.exe", "SQLPS.exe", "telemetryservice.exe", "UMWorkerProcess.exe", "w3wp.exe", "wsmprovhost.exe" )
-
- Version 2 (7.11.2 release)
-
- Formatting only