Possible PHP Reverse Shell (via process_creation)
This rule detects use of the PHP CLI with the "-r" flag which enables it to run inline PHP code. The rule looks for calls to the "fsockopen" function which enables the creation of sockets. Attackers frequently abuse this in combination with functions such as "exec" or "fopen" to initiate a reverse shell connection.
SigmahighLinuxv1
Full detection rule
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- Unknown
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.