HighSigmaHQ Tobias Michalski (Nextron Systems) +2

Potential Persistence Via Outlook Today Page

Detects potential persistence activity via outlook today page. An attacker can set a custom page to execute arbitrary code and link to it via the registry values "URL" and "UserDefinedUrl".

Detection logic

Detection requirements

Platform: Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source product: windows
Log source category: registry_set

Known benign triggers

Unknown

References

Links the source published beside this detection. Reference is the link the source wrote, unmodified. Class is decided by this catalogue from the host and path, not stated by the source. Cited by counts published detections citing the same resource, including this one, and the sources beneath it count the repositories this catalogue ingests, which is not the same as independent research.
Reference	Class	Cited by
speakerdeck.com/heirhabarov/hunting-for-persistence-via-microsoft-exchange-server-or-outlook?slide=74	Unclassified	Only this detection cites it
trustedsec.com/blog/specula-turning-outlook-into-a-c2-with-one-registry-change	Unclassified	2

Detection rules

Potential Persistence Via Outlook Today Page

Detection logic

Detection requirements

Known benign triggers

MITRE ATT&CK mappings

References

From the source

Licence

Authorship

Detection rules