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Detection rules › Sigma

Sysmon Application Crashed

Status
test
Severity
high
Log source
product windows, service system
Author
Tim Shelton
Source
github.com/SigmaHQ/sigma

Detects application popup reporting a failure of the Sysmon service

MITRE ATT&CK coverage

TacticTechniques
Defense Impairment

Telemetry coverage

ProviderRecord / event type
Application-PopupEvent ID 26: Application popup: Caption : Message.

Rule body

title: Sysmon Application Crashed
id: 4d7f1827-1637-4def-8d8a-fd254f9454df
status: test
description: Detects application popup reporting a failure of the Sysmon service
references:
    - https://github.com/nasbench/EVTX-ETW-Resources/blob/f1b010ce0ee1b71e3024180de1a3e67f99701fe4/ETWProvidersManifests/Windows10/1803/W10_1803_Pro_19700101_17134.1/WEPExplorer/Application%20Popup.xml#L36
author: Tim Shelton
date: 2022-04-26
modified: 2024-01-17
tags:
    - attack.defense-impairment
    - attack.t1685
logsource:
    product: windows
    service: system
detection:
    selection:
        Provider_Name: 'Application Popup'
        EventID: 26
        Caption:
            - 'sysmon64.exe - Application Error'
            - 'sysmon.exe - Application Error'
    condition: selection
falsepositives:
    - Unknown
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    Provider_Name: 'Application Popup'
    EventID: 26
    Caption:
        - 'sysmon64.exe - Application Error'
        - 'sysmon.exe - Application Error'

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
Captioneq
  • sysmon.exe - Application Error
  • sysmon64.exe - Application Error
field:"Caption" kind:eq
Provider_Nameeq
  • Application Popup
field:"Provider_Name" kind:eq value:"Application Popup"