Sigma rule: Renamed BrowserCore.EXE Execution

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-58446d7dd0c7, updated 2023-02-03T00:00:00.000Z.

Rule

Title
Renamed BrowserCore.EXE Execution
Status
test
Level
high
Author
Max Altgelt (Nextron Systems)
Date
2022-06-02
Modified
2023-02-03
File
rules/windows/process_creation/proc_creation_win_renamed_browsercore.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects process creation with a renamed BrowserCore.exe (used to extract Azure tokens)

Log source

product
windows
category
process_creation

Detection

selection:
    OriginalFileName: BrowserCore.exe
filter_realbrowsercore:
    Image|endswith: '\BrowserCore.exe'
condition: selection and not 1 of filter_*

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.credential-access
  • attack.stealth
  • attack.t1528
  • attack.t1036.003

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/process_creation/proc_creation_win_renamed_browsercore.yml

Sources and licences

  • SigmaHQ

    "Renamed BrowserCore.EXE Execution" by Max Altgelt (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_renamed_browsercore.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: Renamed BrowserCore.EXE Execution",
entity page, dataset version ref-58446d7dd0c7, updated 2023-02-03T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/8a4519e8-e64a-40b6-ae85-ba8ad2177559 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 8a4519e8-e64a-40b6-ae85-ba8ad2177559, 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.