Data from Network Shared Drive
Where this stands
A Sigma rule exists for this technique in the corpus.
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When a detection for this fires
Collection and exfiltrationData being gathered or moved. This is where a security incident becomes a disclosure obligation.What the technique is
Adversaries may search network shares on computers they have compromised to find files of interest. Sensitive data can be collected from remote systems via shared network drives (host shared directory, network file server, etc.) that are accessible from the current system prior to Exfiltration. Interactive command shells may be in use, and common functionality within cmd may be used to gather information.
Read it on attack.mitre.orgWhat MITRE says you would watch
- AN1145
Monitoring of file access to network shares (e.g., C$, Admin$) followed by unusual read or copy operations by processes not typically associated with such activity (e.g., PowerShell, certutil).
- AN1146
Unusual access or copying of files from mounted network drives (e.g., NFS, CIFS/SMB) by user shells or scripts followed by large data transfer.
- AN1147
Detection of file access from mounted SMB shares followed by copy or exfil commands from Terminal or script interpreter processes.
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