Detection rules › Sigma
Potential Edputil.DLL Sideloading
Detects potential DLL sideloading of "edputil.dll"
Known false positives
- Unlikely
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | |
| Stealth |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 7: Image loaded |
Rule body
title: Potential Edputil.DLL Sideloading
id: e4903324-1a10-4ed3-981b-f6fe3be3a2c2
status: test
description: Detects potential DLL sideloading of "edputil.dll"
references:
- https://alternativeto.net/news/2023/5/cybercriminals-use-wordpad-vulnerability-to-spread-qbot-malware/
author: X__Junior (Nextron Systems)
date: 2023-06-09
tags:
- attack.persistence
- attack.privilege-escalation
- attack.execution
- attack.stealth
- attack.t1574.001
logsource:
category: image_load
product: windows
detection:
selection:
ImageLoaded|endswith: '\edputil.dll'
filter_main_generic:
ImageLoaded|startswith:
- 'C:\Windows\System32\'
- 'C:\Windows\SysWOW64\'
- 'C\Windows\WinSxS\'
condition: selection and not 1 of filter_main_*
falsepositives:
- Unlikely
level: high
Stages and Predicates
Stage 0: condition
selection and not 1 of filter_main_*Stage 1: selection
selection:
ImageLoaded|endswith: '\edputil.dll'
Stage 2: not filter_main_generic
filter_main_generic:
ImageLoaded|startswith:
- 'C:\Windows\System32\'
- 'C:\Windows\SysWOW64\'
- 'C\Windows\WinSxS\'
Exclusions
The rule actively suppresses these predicates.
| Field | Kind | Excluded values | Search |
|---|---|---|---|
ImageLoaded | starts_with | C:\Windows\SysWOW64\ | excludes:ImageLoaded field:"ImageLoaded" value:"C:\Windows\SysWOW64\" |
ImageLoaded | starts_with | C:\Windows\System32\ | excludes:ImageLoaded field:"ImageLoaded" value:"C:\Windows\System32\" |
ImageLoaded | starts_with | C\Windows\WinSxS\ | excludes:ImageLoaded field:"ImageLoaded" value:"C\Windows\WinSxS\" |
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
ImageLoaded | ends_with |
| field:"ImageLoaded" kind:ends_with value:"\edputil.dll" |