Detection rules › Sigma
Potential SmadHook.DLL Sideloading
Detects potential DLL sideloading of "SmadHook.dll", a DLL used by SmadAV antivirus
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | T1574.001 Hijack Execution Flow: DLL |
| Stealth | T1574.001 Hijack Execution Flow: DLL |
Event coverage
| Provider | Event | Title |
|---|---|---|
| Sysmon | Event ID 7 | Image loaded |
Rule body yaml
title: Potential SmadHook.DLL Sideloading
id: 24b6cf51-6122-469e-861a-22974e9c1e5b
status: test
description: Detects potential DLL sideloading of "SmadHook.dll", a DLL used by SmadAV antivirus
references:
- https://research.checkpoint.com/2023/malware-spotlight-camaro-dragons-tinynote-backdoor/
- https://www.qurium.org/alerts/targeted-malware-against-crph/
author: X__Junior (Nextron Systems)
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
Stages and Predicates
Stage 0: condition
selection and not 1 of filter_main_*Stage 1: selection
selection:
ImageLoaded|endswith:
- '\SmadHook32c.dll'
- '\SmadHook64c.dll'
Stage 2: not filter_main_legit_path
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\'
Exclusions
Top-level NOT(...) conjuncts: predicates this rule actively suppresses.
| Field | Kind | Excluded values |
|---|---|---|
Image | eq | C:\Program Files (x86)\SMADAV\SmadavProtect32.exe |
Image | eq | C:\Program Files (x86)\SMADAV\SmadavProtect64.exe |
Image | eq | C:\Program Files\SMADAV\SmadavProtect32.exe |
Image | eq | C:\Program Files\SMADAV\SmadavProtect64.exe |
ImageLoaded | starts_with | C:\Program Files (x86)\SMADAV\ |
ImageLoaded | starts_with | C:\Program Files\SMADAV\ |
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.
| Field | Kind | Values |
|---|---|---|
ImageLoaded | ends_with |
|