Spoofed SEC Emails Distribute Evolved DNSMessenger

This post was authored by Edmund Brumaghin, Colin Grady, with contributions from Dave Maynor and @Simpo13. Executive Summary Cisco Talos previously published research into a targeted attack that leveraged an interesting infection process using DNS TXT records to create a bidirectional command and control (C2) channel. Using this channel, the attackers were able to directly […]

from Cisco Blog » Security http://ift.tt/2wORSHM