Emerging Threathightest

Potential Raspberry Robin Aclui Dll SideLoading

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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Launch
Swachchhanda Shrawan PoudelCreated Wed Jul 310f3a9db2-c17a-480e-a723-d1f1c547ab6a2024
Emerging Threat
Active Threat

Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.

Log Source
WindowsImage Load (DLL)
ProductWindows← raw: windows
CategoryImage Load (DLL)← raw: image_load
Detection Logic
Detection Logic4 selectors
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
Unknown

False positive likelihood has not been assessed. Additional context may be needed during triage.

Rule Metadata
Rule ID
0f3a9db2-c17a-480e-a723-d1f1c547ab6a
Status
test
Level
high
Type
Emerging Threat
Created
Wed Jul 31
Path
rules-emerging-threats/2024/Malware/Raspberry-Robin/image_load_malware_raspberry_robin_side_load_aclui_oleview.yml
Raw Tags
attack.persistenceattack.defense-evasionattack.privilege-escalationattack.t1574.001detection.emerging-threats
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