Sigma rule: Potential Raspberry Robin Aclui Dll SideLoading

Rule

Title

Potential Raspberry Robin Aclui Dll SideLoading

Status

test

Level

high

Author

Swachchhanda Shrawan Poudel

Date

2024-07-31

File

rules-emerging-threats/2024/Malware/Raspberry-Robin/image_load_malware_raspberry_robin_side_load_aclui_oleview.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects potential sideloading of malicious "aclui.dll" by OleView.This behavior was observed in Raspberry-Robin variants reported by chekpoint research on Feburary 2024.

Log source

product

windows

category

image_load

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_*

False positives (as the rule lists them)

• Unknown

Tags

• attack.persistence
• attack.privilege-escalation
• attack.execution
• attack.stealth
• attack.t1574.001
• detection.emerging-threats

MITRE ATT&CK ids this rule names

• T1574.001

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

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2024/Malware/Raspberry-Robin/image_load_malware_raspberry_robin_side_load_aclui_oleview.yml