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Detection rules › Sigma

Potential Unquoted Service Path Reconnaissance Via Wmic.EXE

Status
test
Severity
medium
Log source
product windows, category process_creation
Author
Nasreddine Bencherchali (Nextron Systems)
Source
github.com/SigmaHQ/sigma

Detects known WMI recon method to look for unquoted service paths using wmic. Often used by pentester and attacker enumeration scripts

MITRE ATT&CK coverage

TacticTechniques
ExecutionT1047 Windows Management Instrumentation

Event coverage

ProviderEventTitle
SysmonEvent ID 1Process creation

Rule body yaml

title: Potential Unquoted Service Path Reconnaissance Via Wmic.EXE
id: 68bcd73b-37ef-49cb-95fc-edc809730be6
related:
    - id: 09658312-bc27-4a3b-91c5-e49ab9046d1b # PowerShell Variant
      type: similar
    - id: 76f55eaa-d27f-4213-9d45-7b0e4b60bbae
      type: similar
status: test
description: Detects known WMI recon method to look for unquoted service paths using wmic. Often used by pentester and attacker enumeration scripts
references:
    - https://github.com/nccgroup/redsnarf/blob/35949b30106ae543dc6f2bc3f1be10c6d9a8d40e/redsnarf.py
    - https://github.com/S3cur3Th1sSh1t/Creds/blob/eac23d67f7f90c7fc8e3130587d86158c22aa398/PowershellScripts/jaws-enum.ps1
    - https://www.absolomb.com/2018-01-26-Windows-Privilege-Escalation-Guide/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-06-20
modified: 2023-09-11
tags:
    - attack.execution
    - attack.t1047
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - OriginalFileName: 'wmic.exe'
        - Image|endswith: '\WMIC.exe'
    selection_cli:
        CommandLine|contains|all:
            - ' service get '
            - 'name,displayname,pathname,startmode'
    condition: all of selection*
falsepositives:
    - Unknown
level: medium

Stages and Predicates

Stage 0: condition

all of selection*

Stage 1: selection_img

selection_img:
    - OriginalFileName: 'wmic.exe'
    - Image|endswith: '\WMIC.exe'

Stage 2: selection_cli

selection_cli:
    CommandLine|contains|all:
        - ' service get '
        - 'name,displayname,pathname,startmode'

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
CommandLinematch
  • service get
  • name,displayname,pathname,startmode
Imageends_with
  • \WMIC.exe corpus 60 (sigma 60)
OriginalFileNameeq
  • wmic.exe corpus 61 (sigma 36, splunk 18, elastic 7)