[New Rule] Unusual Remote File Creation #4476
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Aegrah requested review from DefSecSentinel, shashank-elastic, terrancedejesus and w0rk3r 
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Aegrah changed the title 
Aegrah commented Feb 20, 2025
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terrancedejesus approved these changes Feb 20, 2025
shashank-elastic approved these changes Feb 25, 2025
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Summary
This rule leverages the new_terms rule type to detect file creation via a commonly used file transfer service while excluding typical remote file creation activity. This behavior is often linked to lateral movement, potentially indicating an attacker attempting to move within a network.
Telemetry
In my own stack, only TPs. In telemetry, a large list of FPs, but these will be excluded through the new_terms rule type, as they are all by the same host/process.