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InformationalSplunk security contentTeoderick Contreras +1

High Frequency Copy Of Files In Network Share

The following analytic detects a high frequency of file copying or moving within network shares, which may indicate potential data sabotage or exfiltration attempts. It leverages Windows Security Event Logs…

Description

The following analytic detects a high frequency of file copying or moving within network shares, which may indicate potential data sabotage or exfiltration attempts. It leverages Windows Security Event Logs (EventCode 5145) to monitor access to specific file types and network shares. This activity is significant as it can reveal insider threats attempting to transfer classified or internal files, potentially leading to data breaches or evidence tampering. If confirmed malicious, this behavior could result in unauthorized data access, data loss, or compromised sensitive information.

Detection logic

Detection requirements

Platform
IaaSOffice SuiteSaaS

The rule states no platform. This is derived from the ATT&CK technique it maps to.

Log source category
windows_event_log_security_5145

Known benign triggers

  • This behavior may be seen in normal transfer of files within a network if network shares are commonly used for sharing documents.

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