Sigma rule: Potential Vivaldi_elf.DLL Sideloading

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-3fe2b0b6c77f, updated 2023-08-03T00:00:00.000Z.

Rule

Title
Potential Vivaldi_elf.DLL Sideloading
Status
test
Level
medium
Author
X__Junior (Nextron Systems)
Date
2023-08-03
File
rules/windows/image_load/image_load_side_load_vivaldi_elf.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects potential DLL sideloading of "vivaldi_elf.dll"

Log source

product
windows
category
image_load

Detection

selection:
    ImageLoaded|endswith: '\vivaldi_elf.dll'
filter_main_legit_path:
    Image|endswith: '\Vivaldi\Application\vivaldi.exe'
    ImageLoaded|contains: '\Vivaldi\Application\'
condition: selection and not 1 of filter_main_*

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.persistence
  • attack.privilege-escalation
  • attack.execution
  • attack.stealth
  • attack.t1574.001

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/image_load/image_load_side_load_vivaldi_elf.yml

Sources and licences

  • SigmaHQ

    "Potential Vivaldi_elf.DLL Sideloading" by X__Junior (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/image_load/image_load_side_load_vivaldi_elf.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: Potential Vivaldi_elf.DLL Sideloading",
entity page, dataset version ref-3fe2b0b6c77f, updated 2023-08-03T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/2092cacb-d77b-4f98-ab0d-32b32f99a054 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 2092cacb-d77b-4f98-ab0d-32b32f99a054, 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.