Windows Administrative Shares Accessed On Multiple Hosts

This analytic detects a single source computer accessing Windows administrative shares (C$, Admin$, IPC$) on 30 or more remote endpoints within a 5-minute window. It leverages Windows Event IDs 5140 and 5145, which are generated for file share events. This behavior is significant as it may indicate an adversary enumerating network shares to locate sensitive files, a common tactic used by threat actors for reconnaissance and lateral movement. If confirmed malicious, this activity could lead to unauthorized access to critical data, lateral movement, and potential compromise of multiple systems within the network.