Potential Raspberry Robin Aclui Dll SideLoading

calendar Apr 28, 2026 · attack.persistence attack.privilege-escalation attack.execution attack.stealth attack.t1574.001 detection.emerging-threats  ·
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Detects potential sideloading of malicious "aclui.dll" by OleView.This behavior was observed in Raspberry-Robin variants reported by chekpoint research on Feburary 2024.

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 1title: Potential Raspberry Robin Aclui Dll SideLoading
 2id: 0f3a9db2-c17a-480e-a723-d1f1c547ab6a
 3status: test
 4description: |
 5        Detects potential sideloading of malicious "aclui.dll" by OleView.This behavior was observed in Raspberry-Robin variants reported by chekpoint research on Feburary 2024.
 6references:
 7    - https://research.checkpoint.com/2024/raspberry-robin-keeps-riding-the-wave-of-endless-1-days/
 8    - https://globetech.biz/index.php/2023/05/19/evading-edr-by-dll-sideloading-in-csharp/
 9    - https://decoded.avast.io/threatintel/apt-treasure-trove-avast-suspects-chinese-apt-group-mustang-panda-is-collecting-data-from-burmese-government-agencies-and-opposition-groups/
10    - https://www.hexacorn.com/blog/2016/03/10/beyond-good-ol-run-key-part-36/
11    - https://strontic.github.io/xcyclopedia/library/aclui.dll-F883E9CA757B622B032FDCA5BF33D0DF.html
12author: Swachchhanda Shrawan Poudel
13date: 2024-07-31
14tags:
15    - attack.persistence
16    - attack.privilege-escalation
17    - attack.execution
18    - attack.stealth
19    - attack.t1574.001
20    - detection.emerging-threats
21logsource:
22    category: image_load
23    product: windows
24detection:
25    selection:
26        Image|endswith: '\OleView.exe'
27        ImageLoaded|endswith: '\aclui.dll'
28    filter_main_legit_oleview_paths:
29        Image|startswith:
30            - 'C:\Program Files (x86)\Windows Kits\'
31            - 'C:\Program Files\Microsoft SDKs\'
32    filter_optional_known_oleview_paths:
33        Image|contains: '\Windows Resource Kit\'
34    filter_main_is_signed:
35        Signed: 'true'
36    condition: selection and not 1 of filter_main_* and not 1 of filter_optional_*
37falsepositives:
38    - Unknown
39level: high

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