Sigma rule: Potential Persistence Via Outlook Home Page
A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-a1db04b3750e, updated 2024-08-07T00:00:00.000Z.
Rule
- Title
- Potential Persistence Via Outlook Home Page
- Status
- test
- Level
- high
- Author
- Tobias Michalski (Nextron Systems), David Bertho (@dbertho) & Eirik Sveen (@0xSV1), Storebrand
- Date
- 2021-06-09
- Modified
- 2024-08-07
- File
- rules/windows/registry/registry_set/registry_set_persistence_outlook_homepage.yml
- Commit
- ccbb0369507f796db0b0ae6854c8a2be471b9d84
Detects potential persistence activity via outlook home page.
An attacker can set a home page to achieve code execution and persistence by editing the WebView registry keys.
Log source
- product
- windows
- category
- registry_set
Detection
selection:
TargetObject|contains|all:
- '\Software\Microsoft\Office\'
- '\Outlook\WebView\'
TargetObject|endswith: '\URL'
condition: selectionFalse positives (as the rule lists them)
- Unknown
Tags
- attack.persistence
- attack.defense-impairment
- attack.t1112
MITRE ATT&CK ids this rule names
Related rules
References
- https://speakerdeck.com/heirhabarov/hunting-for-persistence-via-microsoft-exchange-server-or-outlook?slide=70
- https://support.microsoft.com/en-us/topic/outlook-home-page-feature-is-missing-in-folder-properties-d207edb7-aa02-46c5-b608-5d9dbed9bd04?ui=en-us&rs=en-us&ad=us
- https://trustedsec.com/blog/specula-turning-outlook-into-a-c2-with-one-registry-change
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/registry/registry_set/registry_set_persistence_outlook_homepage.yml
Sources and licences
SigmaHQ
"Potential Persistence Via Outlook Home Page" by Tobias Michalski (Nextron Systems), David Bertho (@dbertho) & Eirik Sveen (@0xSV1), Storebrand (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/registry/registry_set/registry_set_persistence_outlook_homepage.yml.
Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License
Cite this page
Dragons Eye Ransomware Tracker, "Sigma rule: Potential Persistence Via Outlook Home Page",
entity page, dataset version ref-a1db04b3750e, updated 2024-08-07T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/ddd171b5-2cc6-4975-9e78-f0eccd08cc76 (accessed 2026-11-03).
Underlying source: SigmaHQ rule ddd171b5-2cc6-4975-9e78-f0eccd08cc76, 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.