Elastic low stable eql

Potential Network Share Discovery

Adversaries may look for folders and drives shared on remote systems to identify sources of information to gather as a precursor for collection and identify potential systems of interest for Lateral Movement.

View Source

Detection Logic

sequence by user.name, source.port, source.ip with maxspan=15s 
 [file where event.action == "network-share-object-access-checked" and 
  winlog.event_data.ShareName in ("\\\\*\\ADMIN$", "\\\\*\\C$") and 
  source.ip != null and source.ip != "0.0.0.0" and source.ip != "::1" and source.ip != "::" and source.ip != "127.0.0.1"]
 [file where event.action == "network-share-object-access-checked" and 
  winlog.event_data.ShareName in ("\\\\*\\ADMIN$", "\\\\*\\C$") and 
  source.ip != null and source.ip != "0.0.0.0" and source.ip != "::1" and source.ip != "::" and source.ip != "127.0.0.1"]

Field Validations

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