Web Shell Activity

This query detects web shells by analyzing the distribution of commonly-used scripts against regular scripts for public client IPs with no W3CIIS activity in a fixed lookback period.

Detection logic

Detection requirements

Platform: ESXi Linux macOS Network Devices Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source product: azuremonitor_iis
Log source service: w3ciislog

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Detection rules

Web Shell Activity

Detection logic

Detection requirements

MITRE ATT&CK mappings

From the source

Licence

Authorship

Detection rules