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Detection rules › Sigma

WMI Persistence - Script Event Consumer File Write

Status
test
Severity
high
Log source
product windows, category file_event
Author
Thomas Patzke
Source
github.com/SigmaHQ/sigma

Detects file writes of WMI script event consumer

MITRE ATT&CK coverage

TacticTechniques
PersistenceT1546.003 Event Triggered Execution: Windows Management Instrumentation Event Subscription
Privilege EscalationT1546.003 Event Triggered Execution: Windows Management Instrumentation Event Subscription

Event coverage

ProviderEventTitle
SysmonEvent ID 11FileCreate

Rule body yaml

title: WMI Persistence - Script Event Consumer File Write
id: 33f41cdd-35ac-4ba8-814b-c6a4244a1ad4
status: test
description: Detects file writes of WMI script event consumer
references:
    - https://www.eideon.com/2018-03-02-THL03-WMIBackdoors/
author: Thomas Patzke
date: 2018-03-07
modified: 2021-11-27
tags:
    - attack.privilege-escalation
    - attack.t1546.003
    - attack.persistence
logsource:
    product: windows
    category: file_event
detection:
    selection:
        Image: 'C:\WINDOWS\system32\wbem\scrcons.exe'
    condition: selection
falsepositives:
    - Dell Power Manager (C:\Program Files\Dell\PowerManager\DpmPowerPlanSetup.exe)
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    Image: 'C:\WINDOWS\system32\wbem\scrcons.exe'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
Imageeq
  • C:\WINDOWS\system32\wbem\scrcons.exe corpus 2 (sigma 2)