title: Potential Raspberry Robin Aclui Dll SideLoading
id: 0f3a9db2-c17a-480e-a723-d1f1c547ab6a
status: test
description: |
Detects potential sideloading of malicious "aclui.dll" by OleView.This behavior was observed in Raspberry-Robin variants reported by chekpoint research on Feburary 2024.
references:
- https://research.checkpoint.com/2024/raspberry-robin-keeps-riding-the-wave-of-endless-1-days/
- https://globetech.biz/index.php/2023/05/19/evading-edr-by-dll-sideloading-in-csharp/
- 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/
- https://www.hexacorn.com/blog/2016/03/10/beyond-good-ol-run-key-part-36/
- https://strontic.github.io/xcyclopedia/library/aclui.dll-F883E9CA757B622B032FDCA5BF33D0DF.html
author: Swachchhanda Shrawan Poudel
date: 2024-07-31
tags:
- attack.persistence
- attack.privilege-escalation
- attack.execution
- attack.stealth
- attack.t1574.001
- detection.emerging-threats
logsource:
category: image_load
product: windows
detection:
selection:
Image|endswith: '\OleView.exe'
ImageLoaded|endswith: '\aclui.dll'
filter_main_legit_oleview_paths:
Image|startswith:
- 'C:\Program Files (x86)\Windows Kits\'
- 'C:\Program Files\Microsoft SDKs\'
filter_optional_known_oleview_paths:
Image|contains: '\Windows Resource Kit\'
filter_main_is_signed:
Signed: 'true'
condition: selection and not 1 of filter_main_* and not 1 of filter_optional_*
falsepositives:
- Unknown
level: high