Malicious perl script Post: 302992369

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Operating Systems Linux Debian Malicious perl script Post 302992369 by drysdalk on Friday 24th of February 2017 08:32:55 AM

02-24-2017

Registered User

Hi,

It certainly sounds like you've been sensible in how you've set up WordPress, from what you describe. And whilst it would be possible to conceal a malicious script in an image, this isn't commonly seen, and tends to be a result of far more subtle and advanced compromises than what you appear to be experiencing.

The main thing I suggest right now is to see if there are still any suspicious processes on your system at the moment. If there are, then you need to find out as much as you can about them before they exit or are killed off. If there aren't, then your next best avenue of investigation would be to look at your Web server logs for anything that appears out-of-the-ordinary.

On a Plesk-style system (if that is indeed what you have), these are typically stored as /var/www/vhosts/domain.com/logs/access_log, where domain.com should of course be replaced with your own Web site's domain. If it's a WordPress site, then any mention of the Perl interpreter or Perl scripts in those logs would constitute an abnormal finding.

drysdalk

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defaultdomain

DEFAULTDOMAIN(5)					     Linux Programmer's Manual						  DEFAULTDOMAIN(5)

NAME

       defaultdomain - file which contains the NIS/YP domain name

DESCRIPTION

       /etc/defaultdomain is used by the boot scripts to set the NIS/YP domain name for a system as returned by the getdomainname(2) function. The
       file contains one line with the name of the domain.

       Unlike DNS hostnames and domain names, the NIS domain name is case-sensitive! The NIS domain name must not be the same as  the  DNS  domain
       name, but for some services like NIS+ it should be the same.

       Even if the domain name is often called NIS/YP domain name, it is also used from other protocols, not only NIS/YP.

FILES

       /etc/defaultdomain /etc/init.d/boot.localnet

SEE ALSO

       domainname(1), init.d(7), init(8), nisdomainname(1), ypdomainname(1), ypbind(8), ypserv(8), ypwhich(1)

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SuSE Linux							    2002-01-16							  DEFAULTDOMAIN(5)