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Suspicious Process Execution via Renamed PsExec Executable
editSuspicious Process Execution via Renamed PsExec Executableedit
Identifies suspicious psexec activity which is executing from the psexec service that has been renamed, possibly to evade detection.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-endpoint.events.*
- logs-windows.*
- endgame-*
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
- Elastic Endgame
Version: 102 (version history)
Added (Elastic Stack release): 7.10.0
Last modified (Elastic Stack release): 8.6.0
Rule authors: Elastic
Rule license: Elastic License v2
Investigation guideedit
Rule queryedit
process where event.type == "start" and process.pe.original_file_name : "psexesvc.exe" and not process.name : "PSEXESVC.exe"
Threat mappingedit
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Execution
- ID: TA0002
- Reference URL: https://attack.mitre.org/tactics/TA0002/
-
Technique:
- Name: System Services
- ID: T1569
- Reference URL: https://attack.mitre.org/techniques/T1569/
Rule version historyedit
- Version 102 (8.6.0 release)
-
- Formatting only
- Version 101 (8.5.0 release)
-
-
Updated query, changed from:
process where event.type in ("start", "process_started", "info") and process.pe.original_file_name : "psexesvc.exe" and not process.name : "PSEXESVC.exe"
-
- Version 7 (8.4.0 release)
-
- Formatting only
- Version 5 (8.2.0 release)
-
- Formatting only
- Version 4 (7.12.0 release)
-
- Formatting only
- Version 3 (7.11.2 release)
-
- Formatting only
- Version 2 (7.11.0 release)
-
-
Updated query, changed from:
event.category:process and event.type:(start or process_started) and (process.pe.original_file_name:(psexesvc.exe or PSEXESVC.exe) or winlog.event_data.OriginalFileName:(psexesvc.exe or PSEXESVC.exe)) and process.parent.name:services.exe and not process.name:(psexesvc.exe or PSEXESVC.exe)
-