The SOC Files 5: Ghost in the pipeline, or a fileless SharePoint breach by Storm-2603
Kaspersky dissects Storm-2603's fileless SharePoint intrusion using ToolShell exploitation and runtime subversion—SOC teams should operationalise the detection guidance for in-memory threats in Microsoft 365 environments.
Summary written by editorial AI · Source link below
Kaspersky researchers analyze a complex fileless cyberattack by Storm-2603 involving ToolShell exploitation and subsequent runtime subversion, and discuss how to detect such intrusions.
Editorial Analysis
Fileless attack chains that subvert SharePoint at runtime represent a growing threat to the Microsoft 365 environments that most European enterprises depend on, and demand detection capabilities beyond traditional file-based AV.
Deploy the specific detection rules from Kaspersky's analysis targeting anomalous SharePoint process behaviour, in-memory payload execution, and suspicious PowerShell invocations.
A sophisticated fileless attack breached SharePoint without touching disk—our Microsoft 365 detection capabilities need validation against this technique.
Forward-looking interpretation drafted by editorial AI under human review — not a reproduction of the source. See methodology.
External link — opens at Securelist (Kaspersky) in a new tab.
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