SigmaHQ/rules/windows/process_creation/win_remote_powershell_session_process.yml

title: Remote PowerShell Session
id: 734f8d9b-42b8-41b2-bcf5-abaf49d5a3c8
description: Detects remote PowerShell sections by monitoring for wsmprovhost as a parent or child process (sign of an active ps remote session)
status: experimental
date: 2019/09/12
modified: 2019/11/10
author: Roberto Rodriguez @Cyb3rWard0g
references:
    - https://github.com/Cyb3rWard0g/ThreatHunter-Playbook/tree/master/playbooks/windows/02_execution/T1086_powershell/powershell_remote_session.md
tags:
    - attack.execution
    - attack.t1086
    - attack.t1059.001
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        - Image|endswith: '\wsmprovhost.exe'
        - ParentImage|endswith: '\wsmprovhost.exe'
    condition: selection
fields:
    - ComputerName
    - User
    - CommandLine
falsepositives:
    - Legitimate usage of remote Powershell, e.g. for monitoring purposes
level: medium
Removed ATT&CK technique ids from titles and added tags 2020-01-10 23:33:50 +00:00			`title: Remote PowerShell Session`
UUIDs + moved unsupported logic * Added UUIDs to all contributed rules * Moved unsupported logic directory out of rules/ because this breaks CI testing. 2019-12-19 22:56:36 +00:00			`id: 734f8d9b-42b8-41b2-bcf5-abaf49d5a3c8`
OSCD QA wave 3 2020-01-19 21:34:16 +00:00			`description: Detects remote PowerShell sections by monitoring for wsmprovhost as a parent or child process (sign of an active ps remote session)`
added: win_non_interactive_powershell.yml win_remote_powershell_session.yml win_wmiprvse_spawning_process.yml powershell_alternate_powershell_hosts.yml powershell_remote_powershell_session.yml sysmon_alternate_powershell_hosts_moduleload.yml sysmon_alternate_powershell_hosts_pipe.yml sysmon_non_interactive_powershell_execution.yml sysmon_powershell_execution_moduleload.yml sysmon_powershell_execution_pipe.yml sysmon_remote_powershell_session_network.yml sysmon_remote_powershell_session_process.yml sysmon_wmi_module_load.yml sysmon_wmiprvse_spawning_process.yml 2019-10-24 13:48:38 +00:00			`status: experimental`
			`date: 2019/09/12`
oscd task #6 done. add 25 new rules: - win_ad_replication_non_machine_account.yml - win_dpapi_domain_backupkey_extraction.yml - win_protected_storage_service_access.yml - win_dpapi_domain_masterkey_backup_attempt.yml - win_sam_registry_hive_handle_request.yml - win_sam_registry_hive_dump_via_reg_utility.yml - win_lsass_access_non_system_account.yml - win_ad_object_writedac_access.yml - powershell_alternate_powershell_hosts.yml - sysmon_remote_powershell_session_network.yml - win_remote_powershell_session.yml - win_scm_database_handle_failure.yml - win_scm_database_privileged_operation.yml - sysmon_wmi_module_load.yml - sysmon_remote_powershell_session_process.yml - sysmon_rdp_registry_modification.yml - sysmon_powershell_execution_pipe.yml - sysmon_alternate_powershell_hosts_pipe.yml - sysmon_powershell_execution_moduleload.yml - sysmon_createremotethread_loadlibrary.yml - sysmon_alternate_powershell_hosts_moduleload.yml - powershell_remote_powershell_session.yml - win_non_interactive_powershell.yml - win_syskey_registry_access.yml - win_wmiprvse_spawning_process.yml improve 1 rule: - rules/windows/builtin/win_account_backdoor_dcsync_rights.yml 2019-11-10 15:43:41 +00:00			`modified: 2019/11/10`
added: win_non_interactive_powershell.yml win_remote_powershell_session.yml win_wmiprvse_spawning_process.yml powershell_alternate_powershell_hosts.yml powershell_remote_powershell_session.yml sysmon_alternate_powershell_hosts_moduleload.yml sysmon_alternate_powershell_hosts_pipe.yml sysmon_non_interactive_powershell_execution.yml sysmon_powershell_execution_moduleload.yml sysmon_powershell_execution_pipe.yml sysmon_remote_powershell_session_network.yml sysmon_remote_powershell_session_process.yml sysmon_wmi_module_load.yml sysmon_wmiprvse_spawning_process.yml 2019-10-24 13:48:38 +00:00			`author: Roberto Rodriguez @Cyb3rWard0g`
			`references:`
			`- https://github.com/Cyb3rWard0g/ThreatHunter-Playbook/tree/master/playbooks/windows/02_execution/T1086_powershell/powershell_remote_session.md`
Removed ATT&CK technique ids from titles and added tags 2020-01-10 23:33:50 +00:00			`tags:`
			`- attack.execution`
			`- attack.t1086`
Initial round of subtechnique updates 2020-06-16 20:46:08 +00:00			`- attack.t1059.001`
added: win_non_interactive_powershell.yml win_remote_powershell_session.yml win_wmiprvse_spawning_process.yml powershell_alternate_powershell_hosts.yml powershell_remote_powershell_session.yml sysmon_alternate_powershell_hosts_moduleload.yml sysmon_alternate_powershell_hosts_pipe.yml sysmon_non_interactive_powershell_execution.yml sysmon_powershell_execution_moduleload.yml sysmon_powershell_execution_pipe.yml sysmon_remote_powershell_session_network.yml sysmon_remote_powershell_session_process.yml sysmon_wmi_module_load.yml sysmon_wmiprvse_spawning_process.yml 2019-10-24 13:48:38 +00:00			`logsource:`
fix logsource for remote_powershell_session_process.yml 2019-11-10 20:10:24 +00:00			`category: process_creation`
added: win_non_interactive_powershell.yml win_remote_powershell_session.yml win_wmiprvse_spawning_process.yml powershell_alternate_powershell_hosts.yml powershell_remote_powershell_session.yml sysmon_alternate_powershell_hosts_moduleload.yml sysmon_alternate_powershell_hosts_pipe.yml sysmon_non_interactive_powershell_execution.yml sysmon_powershell_execution_moduleload.yml sysmon_powershell_execution_pipe.yml sysmon_remote_powershell_session_network.yml sysmon_remote_powershell_session_process.yml sysmon_wmi_module_load.yml sysmon_wmiprvse_spawning_process.yml 2019-10-24 13:48:38 +00:00			`product: windows`
			`detection:`
fix logsource for remote_powershell_session_process.yml 2019-11-10 20:10:24 +00:00			`selection:`
			`- Image\|endswith: '\wsmprovhost.exe'`
			`- ParentImage\|endswith: '\wsmprovhost.exe'`
			`condition: selection`
OSCD QA wave 1 * Checked all rules against Mordor and EVTX samples datasets * Added field names * Some severity adjustments * Fixes 2020-01-10 23:11:27 +00:00			`fields:`
			`- ComputerName`
			`- User`
			`- CommandLine`
added: win_non_interactive_powershell.yml win_remote_powershell_session.yml win_wmiprvse_spawning_process.yml powershell_alternate_powershell_hosts.yml powershell_remote_powershell_session.yml sysmon_alternate_powershell_hosts_moduleload.yml sysmon_alternate_powershell_hosts_pipe.yml sysmon_non_interactive_powershell_execution.yml sysmon_powershell_execution_moduleload.yml sysmon_powershell_execution_pipe.yml sysmon_remote_powershell_session_network.yml sysmon_remote_powershell_session_process.yml sysmon_wmi_module_load.yml sysmon_wmiprvse_spawning_process.yml 2019-10-24 13:48:38 +00:00			`falsepositives:`
OSCD QA wave 3 2020-01-19 21:34:16 +00:00			`- Legitimate usage of remote Powershell, e.g. for monitoring purposes`
fix: reduced level due to false positives 2020-03-17 19:40:28 +00:00			`level: medium`