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Detectioncriticaltest

Potential DCOM InternetExplorer.Application DLL Hijack

Detects potential DLL hijack of "iertutil.dll" found in the DCOM InternetExplorer.Application Class over the network

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Launch
Roberto Rodriguez (Cyb3rWard0g), Open Threat Research (OTR), waggaCreated Mon Oct 12Updated Sun Dec 182f7979ae-f82b-45af-ac1d-2b10e93b0baawindows
Log Source
WindowsFile Event
ProductWindows← raw: windows
CategoryFile Event← raw: file_event

Events for file system activity including creation, modification, and deletion.

Detection Logic
Detection Logic1 selector
detection:
    selection:
        Image: System
        TargetFilename|endswith: '\Internet Explorer\iertutil.dll'
    condition: selection
False Positives
Unknown

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

References
1
Resolving title…
threathunterplaybook.com
MITRE ATT&CK
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SimilarDetectioncritical

Potential DCOM InternetExplorer.Application DLL Hijack - Image Load

Detects potential DLL hijack of "iertutil.dll" found in the DCOM InternetExplorer.Application Class

Detects similar activity. Both rules may fire on overlapping events.

Rule Metadata
Rule ID
2f7979ae-f82b-45af-ac1d-2b10e93b0baa
Status
test
Level
critical
Type
Detection
Created
Mon Oct 12
Modified
Sun Dec 18
Author
Roberto Rodriguez (Cyb3rWard0g), Open Threat Research (OTR), wagga
Path
rules/windows/file/file_event/file_event_win_dcom_iertutil_dll_hijack.yml
Raw Tags
attack.lateral-movementattack.t1021.002attack.t1021.003
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