Detection rules › Sigma
Potential CCleanerReactivator.DLL Sideloading
Detects potential DLL sideloading of "CCleanerReactivator.dll"
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 CCleanerReactivator.DLL Sideloading
id: 3735d5ac-d770-4da0-99ff-156b180bc600
status: test
description: Detects potential DLL sideloading of "CCleanerReactivator.dll"
references:
- https://lab52.io/blog/2344-2/
author: X__Junior
date: 2023-07-13
tags:
- attack.persistence
- attack.privilege-escalation
- attack.execution
- attack.stealth
- attack.t1574.001
logsource:
category: image_load
product: windows
detection:
selection:
ImageLoaded|endswith: '\CCleanerReactivator.dll'
filter_main_path:
Image|startswith:
- 'C:\Program Files\CCleaner\'
- 'C:\Program Files (x86)\CCleaner\'
Image|endswith: '\CCleanerReactivator.exe'
condition: selection and not 1 of filter_main_*
falsepositives:
- False positives could occur from other custom installation paths. Apply additional filters accordingly.
level: medium
Stages and Predicates
Stage 0: condition
selection and not 1 of filter_main_*Stage 1: selection
selection:
ImageLoaded|endswith: '\CCleanerReactivator.dll'
Stage 2: not filter_main_path
filter_main_path:
Image|startswith:
- 'C:\Program Files\CCleaner\'
- 'C:\Program Files (x86)\CCleaner\'
Image|endswith: '\CCleanerReactivator.exe'
Exclusions
Top-level NOT(...) conjuncts: predicates this rule actively suppresses.
| Field | Kind | Excluded values |
|---|---|---|
Image | starts_with | C:\Program Files (x86)\CCleaner\ |
Image | starts_with | C:\Program Files\CCleaner\ |
Image | ends_with | \CCleanerReactivator.exe |
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 |
|