SigmaHQ/rules/windows/sysmon/sysmon_dcom_iertutil_dll_hijack.yml
2020-10-12 21:58:02 -04:00

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title: T1021 DCOM InternetExplorer.Application Iertutil DLL Hijack
id: e554f142-5cf3-4e55-ace9-a1b59e0def65
description: Detects a threat actor creating a file named `iertutil.dll` in the `C:\Program Files\Internet Explorer\` directory over the network and loading it for a DCOM InternetExplorer DLL Hijack scenario.
status: experimental
date: 2020/10/12
author: Roberto Rodriguez @Cyb3rWard0g, Open Threat Research (OTR)
tags:
- attack.lateral_movement
- attack.t1021.002
- attack.t1021.003
references:
- https://threathunterplaybook.com/notebooks/windows/08_lateral_movement/WIN-201009183000.html
logsource:
product: windows
service: sysmon
detection:
selection_one:
EventID: 11
Image: System
TargetFilename: '*\Internet Explorer\iertutil.dll'
selection_two:
EventID: 7
Image: '*\Internet Explorer\iexplore.exe'
ImageLoaded: '*\Internet Explorer\iertutil.dll'
condition: selection_one or selection_two
falsepositives:
- Unknown
level: critical