Detectionmediumtest
Potential DLL Sideloading Using Coregen.exe
Detect usage of the "coregen.exe" (Microsoft CoreCLR Native Image Generator) binary to sideload arbitrary DLLs.
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Log Source
WindowsImage Load (DLL)
ProductWindows← raw: windows
CategoryImage Load (DLL)← raw: image_load
Detection Logic
Detection Logic2 selectors
detection:
selection:
Image|endswith: '\coregen.exe'
filter_main_legit_paths:
ImageLoaded|startswith:
- 'C:\Program Files (x86)\Microsoft Silverlight\'
- 'C:\Program Files\Microsoft Silverlight\'
- 'C:\Windows\System32\'
- 'C:\Windows\SysWOW64\'
condition: selection and not 1 of filter_main_*False Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
MITRE ATT&CK
Rule Metadata
Rule ID
0fa66f66-e3f6-4a9c-93f8-4f2610b00171
Status
test
Level
medium
Type
Detection
Created
Sat Dec 31
Author
Path
rules/windows/image_load/image_load_side_load_coregen.yml
Raw Tags
attack.privilege-escalationattack.defense-evasionattack.t1218attack.t1055