Malicious perl script Post: 302992395

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Operating Systems Linux Debian Malicious perl script Post 302992395 by drysdalk on Friday 24th of February 2017 11:33:08 AM

02-24-2017

Registered User

Hi,

I suspect these are two different issues. So far you have seen evidence of attempted brute-forcing of your WordPress logins, and you also saw a Perl script establishing a variety of outbound SMTP connections back at the very start of this thread.

It is entirely possible that the two are related, but equally they may not be. There's always a steady trickle of would-be brute-forcing and exploit scanning in the logs of pretty much every Web server on the Internet, more or less. If your WordPress installation is genuinely secure, these should be nothing to worry about. More sinister is the Perl script.

If in the output of ps and top right now you're not able to see any errant Perl scripts, and if there is nothing Perl-related in any of your Web logs, then there's not much more you can do at this point to track down that Perl script.

What you can say for sure is that your server was clearly running an unexpected Perl script that appeared to be establishing a variety of outbound SMTP connections, and it must have come from somewhere. And if that somewhere wasn't you, then you do definitely have a security issue you still need to get to the bottom of.

drysdalk

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inn::config

INN::Config(3pm)					    InterNetNews Documentation						  INN::Config(3pm)

NAME

       Config.pm - Export all the variables an INN Perl script might need

DESCRIPTION

       This Perl module sets up any and all the variables that an INN Perl script might need.  More particularly, it allows to use inn.conf
       variables:  they are all provided by innconfval, as well as the version of INN (in the variable $INN::Config::version).	Other useful
       variables are also provided (directories, files, programs, masks, parameters) and you should have a look at the source code of the module
       to see what you can use in your Perl scripts.

       You only have to declare the module at the beginning of them:

	   use lib '<pathnews>/lib/perl';
	   use INN::Config;

       Then, you can for instance use:

	   print $INN::Config::localmaxartsize;

       to print the value of localmaxartsize as it is set in inn.conf.

       You can also specify a version when you import the module.  If you write:

	   use INN::Config 2.5.0;

       only versions of INN superior to 2.5.0 will be able to run the Perl script.

       It is also possible to import the variables directly in your namespace if you specify what you want to import:

	   use INN::Config qw($localmaxartsize $pathbin);

       Note that a legacy innshellvars.pl is also provided in pathnews/lib for compatibility reasons with old Perl scripts not shipped with INN.
       It was used by versions of INN anterior to 2.5.0.  The corresponding scripts for Shell and Tcl are, however, still in use:  innshellvars
       and innshellvars.tcl.  They offer the same capabilities as this module.

HISTORY

       innshellvars.pl was written by James Brister <brister@vix.com> for InterNetNews in 1996.  It was converted to the INN::Config Perl module
       by Julien Elie in 2007.

       $Id: Config.pm.in 8357 2009-02-27 17:56:00Z iulius $

SEE ALSO

       inn.conf(5), innconfval(1), perl(1).

INN 2.5.2							    2009-05-21							  INN::Config(3pm)