sigmahighHunting

DCOM InternetExplorer.Application Iertutil DLL Hijack - Security

Detects a threat actor creating a file named `iertutil.dll` in the `C:\Program Files\Internet Explorer\` directory over the network for a DCOM InternetExplorer DLL Hijack scenario.

MITRE ATT&CK

T1021.002 T1021.003

lateral-movement

Detection Query

selection:
  EventID: 5145
  RelativeTargetName|endswith: \Internet Explorer\iertutil.dll
filter:
  SubjectUserName|endswith: $
condition: selection and not filter

Author

Roberto Rodriguez @Cyb3rWard0g, Open Threat Research (OTR)

Created

2020-10-12

Data Sources

windowssecurity

Platforms

windows

References

https://threathunterplaybook.com/hunts/windows/201009-RemoteDCOMIErtUtilDLLHijack/notebook.html

Tags

attack.lateral-movementattack.t1021.002attack.t1021.003

Raw Content

title: DCOM InternetExplorer.Application Iertutil DLL Hijack - Security
id: c39f0c81-7348-4965-ab27-2fde35a1b641
status: test
description: Detects a threat actor creating a file named `iertutil.dll` in the `C:\Program Files\Internet Explorer\` directory over the network for a DCOM InternetExplorer DLL Hijack scenario.
references:
    - https://threathunterplaybook.com/hunts/windows/201009-RemoteDCOMIErtUtilDLLHijack/notebook.html
author: Roberto Rodriguez @Cyb3rWard0g, Open Threat Research (OTR)
date: 2020-10-12
modified: 2022-11-26
tags:
    - attack.lateral-movement
    - attack.t1021.002
    - attack.t1021.003
logsource:
    product: windows
    service: security
detection:
    selection:
        EventID: 5145
        RelativeTargetName|endswith: '\Internet Explorer\iertutil.dll'
    filter:
        SubjectUserName|endswith: '$'
    condition: selection and not filter
falsepositives:
    - Unknown
level: high