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sigmacriticalHunting

Potential DCOM InternetExplorer.Application DLL Hijack

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

MITRE ATT&CK

T1021.002T1021.003
lateral-movement

Detection Query

selection:
  Image: System
  TargetFilename|endswith: \Internet Explorer\iertutil.dll
condition: selection

Author

Roberto Rodriguez @Cyb3rWard0g, Open Threat Research (OTR), wagga

Created

2020-10-12

Data Sources

windowsFile Events

Platforms

windows

References

Tags

attack.lateral-movementattack.t1021.002attack.t1021.003
Raw Content
title: Potential DCOM InternetExplorer.Application DLL Hijack
id: 2f7979ae-f82b-45af-ac1d-2b10e93b0baa
related:
    - id: e554f142-5cf3-4e55-ace9-a1b59e0def65
      type: obsolete
    - id: f354eba5-623b-450f-b073-0b5b2773b6aa
      type: similar
status: test
description: Detects potential DLL hijack of "iertutil.dll" found in the DCOM InternetExplorer.Application Class over the network
references:
    - https://threathunterplaybook.com/hunts/windows/201009-RemoteDCOMIErtUtilDLLHijack/notebook.html
author: Roberto Rodriguez @Cyb3rWard0g, Open Threat Research (OTR), wagga
date: 2020-10-12
modified: 2022-12-18
tags:
    - attack.lateral-movement
    - attack.t1021.002
    - attack.t1021.003
logsource:
    product: windows
    category: file_event
detection:
    selection:
        Image: System
        TargetFilename|endswith: '\Internet Explorer\iertutil.dll'
    condition: selection
falsepositives:
    - Unknown
level: critical