apache2_malicious_module

Install apache2-dev

Compile:

apxs -c -i poc.c

Loading the module:

LoadModule my_module /path/to/poc.so

Now you can transfer the poc.so to the target machine.
Apache2 modules can be found in /etc/apache2/modules or /usr/lib/apache2/modules.
To find your module easily you can run the following command in the directories mentioned above:

find . -mtime 0