title: EDR WMI Command Execution by Office Applications
author: Vadim Khrykov (ThreatIntel), Cyb3rEng (Rule)
date: 2021/08/23
description: Initial execution of malicious document calls wmic Win32_Process::Create
    to execute the file with regsvr32
detection:
    SELECTION_1:
        EventLog: EDR
    SELECTION_2:
        EventType: WMIExecution
    SELECTION_3:
        WMIcommand: '*Win32_Process\:\:Create*'
    SELECTION_4:
        Image: '*\winword.exe'
    SELECTION_5:
        Image: '*\excel.exe'
    SELECTION_6:
        Image: '*\powerpnt.exe'
    condition: (SELECTION_1 and SELECTION_2 and SELECTION_3 and (SELECTION_4 or SELECTION_5
        or SELECTION_6))
falsepositives:
- Unknown
id: 3ee1bba8-b9e2-4e35-bec5-7fb66b6b3815
level: high
logsource:
    category: edr
    product: windows
modified: 2021/11/09
references:
- https://thedfirreport.com/2021/03/29/sodinokibi-aka-revil-ransomware/
- https://github.com/vadim-hunter/Detection-Ideas-Rules/blob/main/Threat%20Intelligence/The%20DFIR%20Report/20210329_Sodinokibi_(aka_REvil)_Ransomware.yaml
status: experimental
tags:
- attack.t1204.002
- attack.t1047
- attack.t1218.010
- attack.execution
- attack.defense_evasion
yml_filename: edr_command_execution_by_office_applications.yml
yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/edr