Windows DLL Sideloading via SmadHook32c.dll and SmadHook64c.dll Loads

Alerts on non-standard loads of SmadHook32c.dll/SmadHook64c.dll on Windows, consistent with potential DLL sideloading.

FreeReviewedSigma · High · v2
Product
windows
Category
image_load
Author
X__Junior (Nextron Systems) (SigmaHQ), DRL 1.1
Published
2023-06-01
Updated
2026-07-31
title: Windows DLL Sideloading via SmadHook32c.dll and SmadHook64c.dll Loads
id: 1a08f74d-a85a-4d0a-b48b-36096fe630ac
status: test
description: This rule identifies Windows image loads of SmadHook32c.dll or SmadHook64c.dll while excluding loads originating from the SMADAV product executable paths. Such DLL sideloading can be used by attackers to execute malicious code under the context of a legitimate process by placing or triggering a spoofed dependency. Telemetry required includes image-load events (ImageLoaded) on Windows, and process/image path context to filter known legitimate SMADAV binaries.
references:
  - https://research.checkpoint.com/2023/malware-spotlight-camaro-dragons-tinynote-backdoor/
  - https://www.qurium.org/alerts/targeted-malware-against-crph/
  - https://github.com/SigmaHQ/sigma/blob/master/rules/windows/image_load/image_load_side_load_smadhook.yml
author: X__Junior (Nextron Systems), Huntrule Team
date: 2023-06-01
tags:
  - attack.persistence
  - attack.privilege-escalation
  - attack.execution
  - attack.stealth
  - attack.t1574.001
logsource:
  category: image_load
  product: windows
detection:
  selection:
    ImageLoaded|endswith:
      - \SmadHook32c.dll
      - \SmadHook64c.dll
  filter_main_legit_path:
    Image:
      - C:\Program Files (x86)\SMADAV\SmadavProtect32.exe
      - C:\Program Files (x86)\SMADAV\SmadavProtect64.exe
      - C:\Program Files\SMADAV\SmadavProtect32.exe
      - C:\Program Files\SMADAV\SmadavProtect64.exe
    ImageLoaded|startswith:
      - C:\Program Files (x86)\SMADAV\
      - C:\Program Files\SMADAV\
  condition: selection and not 1 of filter_main_*
falsepositives:
  - Unlikely
level: high
license: DRL-1.1
related:
  - id: 24b6cf51-6122-469e-861a-22974e9c1e5b
    type: derived