Known false positives
- Administrative scripts that use the same keywords.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| PowerShell | Event ID 4104: Creating Scriptblock text (MessageNumber of MessageTotal). |
Rule body
title: WMImplant Hack Tool
id: 8028c2c3-e25a-46e3-827f-bbb5abf181d7
status: test
description: Detects parameters used by WMImplant
references:
- https://github.com/FortyNorthSecurity/WMImplant
author: NVISO
date: 2020-03-26
modified: 2022-12-25
tags:
- attack.execution
- attack.t1047
- attack.t1059.001
logsource:
product: windows
category: ps_script
definition: 'Requirements: Script Block Logging must be enabled'
detection:
selection:
ScriptBlockText|contains:
- 'WMImplant'
- ' change_user '
- ' gen_cli '
- ' command_exec '
- ' disable_wdigest '
- ' disable_winrm '
- ' enable_wdigest '
- ' enable_winrm '
- ' registry_mod '
- ' remote_posh '
- ' sched_job '
- ' service_mod '
- ' process_kill '
# - ' process_start '
- ' active_users '
- ' basic_info '
# - ' drive_list '
# - ' installed_programs '
- ' power_off '
- ' vacant_system '
- ' logon_events '
condition: selection
falsepositives:
- Administrative scripts that use the same keywords.
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
ScriptBlockText|contains:
- 'WMImplant'
- ' change_user '
- ' gen_cli '
- ' command_exec '
- ' disable_wdigest '
- ' disable_winrm '
- ' enable_wdigest '
- ' enable_winrm '
- ' registry_mod '
- ' remote_posh '
- ' sched_job '
- ' service_mod '
- ' process_kill '
- ' active_users '
- ' basic_info '
- ' power_off '
- ' vacant_system '
- ' logon_events '
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
ScriptBlockText | match |
| field:"ScriptBlockText" kind:match |