Sigma rule: Microsoft VBA For Outlook Addin Loaded Via Outlook

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-362e72d69398, updated 2024-03-12T00:00:00.000Z.

Rule

Title
Microsoft VBA For Outlook Addin Loaded Via Outlook
Status
test
Level
medium
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2023-02-08
Modified
2024-03-12
File
rules/windows/image_load/image_load_office_outlook_outlvba_load.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects outlvba (Microsoft VBA for Outlook Addin) DLL being loaded by the outlook process

Log source

product
windows
category
image_load

Detection

selection:
    Image|endswith: '\outlook.exe'
    ImageLoaded|endswith: '\outlvba.dll'
condition: selection

False positives (as the rule lists them)

  • Legitimate macro usage. Add the appropriate filter according to your environment

Tags

  • attack.execution
  • attack.t1204.002

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_office_outlook_outlvba_load.yml

Sources and licences

  • SigmaHQ

    "Microsoft VBA For Outlook Addin Loaded Via Outlook" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/image_load/image_load_office_outlook_outlvba_load.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: Microsoft VBA For Outlook Addin Loaded Via Outlook",
entity page, dataset version ref-362e72d69398, updated 2024-03-12T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/9a0b8719-cd3c-4f0a-90de-765a4cb3f5ed (accessed 2026-11-03).
Underlying source: SigmaHQ rule 9a0b8719-cd3c-4f0a-90de-765a4cb3f5ed, 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.