Cisco Talos Blog

May 31, 2018 19:00

NavRAT Uses US-North Korea Summit As Decoy For Attacks In South Korea

This blog post is authored by Warren Mercer and Paul Rascagneres with contributions from Jungsoo An. Executive Summary Talos has discovered a new malicious Hangul Word Processor (HWP) document targeting Korean users. If a malicious document is opened, a remote access trojan tha

May 7, 2018 09:36

Vulnerability Spotlight: MySQL Multi-Master Manager Remote Command Injection Vulnerability

Discovered by Matthew Van Gundy of Asig Overview Today, Talos is releasing details of a new vulnerability within MySQL Multi-Master Manager. This is used to perform monitoring, failover and management of MySQL master-master replication configurations. By using MySQL MMM (Mu

February 23, 2018 10:22

Vulnerability Spotlight: Adobe Acrobat Reader DC Document ID Remote Code Execution Vulnerability

Discovered by Aleksandar Nikolic of Cisco Talos Overview Today, Talos is releasing details of a new vulnerability within Adobe Acrobat Reader DC. Adobe Acrobat Reader is the most popular and most feature-rich PDF reader. It has a big user base, is usually a default PDF reader

February 12, 2018 08:16

Olympic Destroyer Takes Aim At Winter Olympics

This blog post is authored by Warren Mercer and Paul Rascagneres. Ben Baker and Matthew Molyett contributed to this post. Update 2/13 08:30 We have updated the information regarding the use of stolen credentials Update 2/12 12:00: We have updated the destructor section with ac

February 2, 2018 11:27

Flash 0-Day In The Wild: Group 123 At The Controls

This blog post is authored by Warren Mercer and Paul Rascagneres. Executive Summary The 1st of February, Adobe published an advisory concerning a Flash vulnerability (CVE-2018-4878). This vulnerability is a use after free that allows Remote Code Execute through a malformed Flas

October 22, 2017 12:22

“Cyber Conflict” Decoy Document Used In Real Cyber Conflict

Update 10/23: CCDCOE released a statement today on their website Introduction Cisco Talos discovered a new malicious campaign from the well known actor Group 74 (aka Tsar Team, Sofacy, APT28, Fancy Bear…). Ironically the decoy document is a deceptive flyer relating to the Cyb

September 28, 2017 11:09

Banking Trojan Attempts To Steal Brazillion$

This post was authored by Warren Mercer, Paul Rascagneres and Vanja Svajcer Introduction Banking trojans are among some of the biggest threats to everyday users as they directly impact the user in terms of financial loss. Talos recently observed a new campaign specific to South

September 20, 2017 17:57

CCleaner Command and Control Causes Concern

Introduction Talos recently published a technical analysis of a backdoor which was included with version 5.33 of the CCleaner application. During our investigation we were provided an archive containing files that were stored on the C2 server. Initially, we had concerns about th