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Detect when a web application is being scanned. This will identify attacker IP addresses who are not trying to hide their attempt to attack your system. More advanced hackers will use an inconspicuous @http.useragent
.
Inspect the user agent in the HTTP headers to determine if an IP is scanning your application using an HTTP header from darkqusar’s gist. The detection does this using 2 cases:
@http.url_details.path
s and receiving @http.status_code
s in the range of 200 TO 299
@http.url_details.path
s and receiving @http.status_code
s in the range of 400 TO 499
UNDER REVIEW
and begin your company’s incident response plan.ARCHIVE
the signal.NOTE: Your organization should tune out user agents that are valid and triggering this signal. To do this, see our Fine-tune security signals to reduce noise blog.
4 April 2022 - Updated rule cases and signal message.