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Added detection testing service results inServices.exe LOLBAS Execution Process Spawn
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@@ -6,30 +6,34 @@ author: Mauricio Velazco, Splunk
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type: TTP
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datamodel:
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- Endpoint
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description: The following analytic identifies `services.exe` spawning a LOLBAS execution process.
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When adversaries execute code on remote endpoints abusing the Service Control Manager and
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creating a remote malicious service, the executed command is spawned as a child processs of `services.exe`.
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The LOLBAS project documents Windows native binaries that can be abused by threat actors to
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perform tasks like executing malicious code. Looking for child processes of services.exe
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that are part of the LOLBAS project can help defenders identify lateral movement activity.
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description: The following analytic identifies `services.exe` spawning a LOLBAS execution
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process. When adversaries execute code on remote endpoints abusing the Service Control
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Manager and creating a remote malicious service, the executed command is spawned
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as a child processs of `services.exe`. The LOLBAS project documents Windows native
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binaries that can be abused by threat actors to perform tasks like executing malicious
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code. Looking for child processes of services.exe that are part of the LOLBAS project
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can help defenders identify lateral movement activity.
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search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
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as lastTime from datamodel=Endpoint.Processes where (Processes.parent_process_name=services.exe)
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(Processes.process_name IN ("Regsvcs.exe", "Ftp.exe", "OfflineScannerShell.exe", "Rasautou.exe", "Schtasks.exe",
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"Xwizard.exe", "Dllhost.exe", "Pnputil.exe", "Atbroker.exe", "Pcwrun.exe", "Ttdinject.exe","Mshta.exe", "Bitsadmin.exe",
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"Certoc.exe", "Ieexec.exe", "Microsoft.Workflow.Compiler.exe", "Runscripthelper.exe", "Forfiles.exe", "Msbuild.exe",
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"Register-cimprovider.exe", "Tttracer.exe", "Ie4uinit.exe", "Bash.exe", "Hh.exe", "SettingSyncHost.exe", "Cmstp.exe",
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"Mmc.exe", "Stordiag.exe", "Scriptrunner.exe", "Odbcconf.exe", "Extexport.exe", "Msdt.exe", "WorkFolders.exe",
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"Diskshadow.exe", "Mavinject.exe", "Regasm.exe", "Gpscript.exe", "Rundll32.exe", "Regsvr32.exe", "Msiexec.exe",
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"Wuauclt.exe", "Presentationhost.exe", "Wmic.exe", "Runonce.exe", "Syncappvpublishingserver.exe", "Verclsid.exe",
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"Infdefaultinstall.exe", "Explorer.exe", "Installutil.exe", "Netsh.exe", "Wab.exe", "Dnscmd.exe", "At.exe",
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"Pcalua.exe", "Msconfig.exe"))
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by Processes.dest Processes.user Processes.parent_process Processes.process_name
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Processes.process Processes.process_id Processes.parent_process_id | `drop_dm_object_name(Processes)`
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(Processes.process_name IN ("Regsvcs.exe", "Ftp.exe", "OfflineScannerShell.exe",
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"Rasautou.exe", "Schtasks.exe", "Xwizard.exe", "Dllhost.exe", "Pnputil.exe", "Atbroker.exe",
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"Pcwrun.exe", "Ttdinject.exe","Mshta.exe", "Bitsadmin.exe", "Certoc.exe", "Ieexec.exe",
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"Microsoft.Workflow.Compiler.exe", "Runscripthelper.exe", "Forfiles.exe", "Msbuild.exe",
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"Register-cimprovider.exe", "Tttracer.exe", "Ie4uinit.exe", "Bash.exe", "Hh.exe",
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"SettingSyncHost.exe", "Cmstp.exe", "Mmc.exe", "Stordiag.exe", "Scriptrunner.exe",
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"Odbcconf.exe", "Extexport.exe", "Msdt.exe", "WorkFolders.exe", "Diskshadow.exe",
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"Mavinject.exe", "Regasm.exe", "Gpscript.exe", "Rundll32.exe", "Regsvr32.exe", "Msiexec.exe",
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"Wuauclt.exe", "Presentationhost.exe", "Wmic.exe", "Runonce.exe", "Syncappvpublishingserver.exe",
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"Verclsid.exe", "Infdefaultinstall.exe", "Explorer.exe", "Installutil.exe", "Netsh.exe",
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"Wab.exe", "Dnscmd.exe", "At.exe", "Pcalua.exe", "Msconfig.exe")) by Processes.dest
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Processes.user Processes.parent_process Processes.process_name Processes.process
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Processes.process_id Processes.parent_process_id | `drop_dm_object_name(Processes)`
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| `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `services_lolbas_execution_process_spawn_filter`'
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how_to_implement: To successfully implement this search, you need to be ingesting
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logs with the process name, parent process, and command-line executions from your
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endpoints.
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known_false_positives: Legitimate applications may trigger this behavior, filter as needed.
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known_false_positives: Legitimate applications may trigger this behavior, filter as
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needed.
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references:
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- https://attack.mitre.org/techniques/T1543/003/
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- https://pentestlab.blog/2020/07/21/lateral-movement-services/
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@@ -73,4 +77,5 @@ tags:
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- name: dest
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type: Endpoint
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role:
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- Victim
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- Victim
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automated_detection_testing: passed
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