Detection rules › Sigma
Suspicious Process Created Via Wmic.EXE
Detects WMIC executing "process call create" with suspicious calls to processes such as "rundll32", "regsrv32", etc.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
| Security-Auditing | Event ID 4688: A new process has been created. |
Rule body
title: Suspicious Process Created Via Wmic.EXE
id: 3c89a1e8-0fba-449e-8f1b-8409d6267ec8
related:
- id: 526be59f-a573-4eea-b5f7-f0973207634d # Generic
type: derived
status: test
description: Detects WMIC executing "process call create" with suspicious calls to processes such as "rundll32", "regsrv32", etc.
references:
- https://thedfirreport.com/2020/10/08/ryuks-return/
- https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/ransomware-hive-conti-avoslocker
author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)
date: 2020-10-12
modified: 2023-02-14
tags:
- attack.execution
- attack.t1047
logsource:
category: process_creation
product: windows
detection:
selection:
CommandLine|contains|all:
- 'process '
- 'call '
- 'create '
CommandLine|contains:
# Add more susupicious paths and binaries as you see fit in your env
- 'rundll32'
- 'bitsadmin'
- 'regsvr32'
- 'cmd.exe /c '
- 'cmd.exe /k '
- 'cmd.exe /r '
- 'cmd /c '
- 'cmd /k '
- 'cmd /r '
- 'powershell'
- 'pwsh'
- 'certutil'
- 'cscript'
- 'wscript'
- 'mshta'
- '\Users\Public\'
- '\Windows\Temp\'
- '\AppData\Local\'
- '%temp%'
- '%tmp%'
- '%ProgramData%'
- '%appdata%'
- '%comspec%'
- '%localappdata%'
condition: selection
falsepositives:
- Unknown
level: high
simulation:
- type: atomic red team
name: WMI Execute rundll32
technique: T1047
atomic_guid: 00738d2a-4651-4d76-adf2-c43a41dfb243
regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_wmic_susp_process_creation/info.yml
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
CommandLine|contains|all:
- 'process '
- 'call '
- 'create '
CommandLine|contains:
- 'rundll32'
- 'bitsadmin'
- 'regsvr32'
- 'cmd.exe /c '
- 'cmd.exe /k '
- 'cmd.exe /r '
- 'cmd /c '
- 'cmd /k '
- 'cmd /r '
- 'powershell'
- 'pwsh'
- 'certutil'
- 'cscript'
- 'wscript'
- 'mshta'
- '\Users\Public\'
- '\Windows\Temp\'
- '\AppData\Local\'
- '%temp%'
- '%tmp%'
- '%ProgramData%'
- '%appdata%'
- '%comspec%'
- '%localappdata%'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match |