Sigma rule: DCOM InternetExplorer.Application Iertutil DLL Hijack - Security

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-0015763d0417, updated 2022-11-26T00:00:00.000Z.

Rule

Title
DCOM InternetExplorer.Application Iertutil DLL Hijack - Security
Status
test
Level
high
Author
Roberto Rodriguez @Cyb3rWard0g, Open Threat Research (OTR)
Date
2020-10-12
Modified
2022-11-26
File
rules/windows/builtin/security/win_security_dcom_iertutil_dll_hijack.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

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.

Log source

product
windows
service
security

Detection

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

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.lateral-movement
  • attack.t1021.002
  • attack.t1021.003

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/builtin/security/win_security_dcom_iertutil_dll_hijack.yml

Sources and licences

  • SigmaHQ

    "DCOM InternetExplorer.Application Iertutil DLL Hijack - Security" by Roberto Rodriguez @Cyb3rWard0g, Open Threat Research (OTR) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/builtin/security/win_security_dcom_iertutil_dll_hijack.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: DCOM InternetExplorer.Application Iertutil DLL Hijack - Security",
entity page, dataset version ref-0015763d0417, updated 2022-11-26T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/c39f0c81-7348-4965-ab27-2fde35a1b641 (accessed 2026-11-03).
Underlying source: SigmaHQ rule c39f0c81-7348-4965-ab27-2fde35a1b641, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.