Potential CCleanerReactivator.DLL Sideloading

calendar May 15, 2025 · attack.defense-evasion attack.persistence attack.privilege-escalation attack.t1574.001  ·
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Detects potential DLL sideloading of "CCleanerReactivator.dll"

Sigma rule (View on GitHub)

 1title: Potential CCleanerReactivator.DLL Sideloading
 2id: 3735d5ac-d770-4da0-99ff-156b180bc600
 3status: test
 4description: Detects potential DLL sideloading of "CCleanerReactivator.dll"
 5references:
 6    - https://lab52.io/blog/2344-2/
 7author: X__Junior
 8date: 2023-07-13
 9tags:
10    - attack.defense-evasion
11    - attack.persistence
12    - attack.privilege-escalation
13    - attack.t1574.001
14logsource:
15    category: image_load
16    product: windows
17detection:
18    selection:
19        ImageLoaded|endswith: '\CCleanerReactivator.dll'
20    filter_main_path:
21        Image|startswith:
22            - 'C:\Program Files\CCleaner\'
23            - 'C:\Program Files (x86)\CCleaner\'
24        Image|endswith: '\CCleanerReactivator.exe'
25    condition: selection and not 1 of filter_main_*
26falsepositives:
27    - False positives could occur from other custom installation paths. Apply additional filters accordingly.
28level: medium

References

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