Spoofed SEC Emails Distribute Evolved DNSMessenger

This post was authored by Edmund Brumaghin, Colin Grady, with contributions from Dave Maynor and @Simpo13.Executive SummaryCisco Talos previously published research into a targeted attack that leveraged an interesting infection process using DNS TXT records to create a bidirectional command and...

Shamoon Collaborator Greenbug Adopts New Communication Tool

Researchers have identified a possible new collaborator in the continued Shamoon attacks against Saudi organizations. Called Greenbug, this group is believed to be instrumental in helping Shamoon steal user credentials of targets ahead of Shamoon’s destructive attacks. However, researchers know...

New Fileless Malware Uses DNS Queries To Receive PowerShell Commands

It is no secret that cybercriminals are becoming dramatically more adept, innovative, and stealthy with each passing day. While new forms of cybercrime are on the rise, traditional activities seem to be shifting towards more clandestine techniques that involve the exploitation of standard system...