Tor2Mine is up to their old tricks — and adds a few new ones
By Kendall McKay and Joe Marshall. Threat summary * Cisco Talos has identified a resurgence of activity by Tor2Mine, a cryptocurrency mining group that was likely last active in 2018. Tor2Mine is deploying additional malware to harvest credentials and steal more money, includ
The wolf is back...
By Warren Mercer, Paul Rascagneres and Vitor Ventura. News summary * Thai Android devices and users are being targeted by a modified version of DenDroid we are calling "WolfRAT," now targeting messaging apps like WhatsApp, Facebook Messenger and Line. * We assess w
Quarterly Report: Incident Response trends in Spring 2020
By David Liebenberg. Cisco Talos Incident Response (CTIR) engagements continue to be dominated by ransomware and commodity trojans. As alluded to in last quarter’s report, ransomware actors have begun threatening to release sensitive information from victims as a means of further
Quarterly Report: Incident Response trends in fall 2019
By David Liebenberg and Kendall McKay. While many Cisco Talos Incident Response (CTIR) engagements have shown similar patterns over the past two quarters, we’re seeing a dangerous trend emerge this winter. Threat actors are increasingly combining the exfiltration of sensitive da
Cryptominers, ransomware among top malware in IR engagements in Q4
By David Liebenberg and Kendall McKay. This summer’s most popular malware families were common and used in unsophisticated attacks, with phishing being the top infection vector, according to Cisco Talos Incident Response (CTIR) data. In addition to threat actors repeatedly deplo
10 years of virtual dynamite: A high-level retrospective of ATM malware
ATM malware has evolved to include a number of different families and different actors behind them, ranging from criminal groups to actors affiliated with nation states.
Recent MuddyWater-associated BlackWater campaign shows signs of new anti-detection techniques
By Danny Adamitis, David Maynor, and Kendall McKay. Cisco Talos assesses with moderate confidence that a campaign we recently discovered called "BlackWater" is associated with suspected persistent threat actor MuddyWater. Newly associated samples from April 2019 indica
DNSpionage brings out the Karkoff
Update 4/24: The C2 section below now includes details around the XOR element of the C2 communication system. Executive summary In November 2018, Cisco Talos discovered an attack campaign, called DNSpionage, in which threat actors created a new remote administrative tool that
Anatomy of a sextortion scam
While these attacks have been in the wild for months, Talos wanted to take a closer look at some of these campaigns to see why users were being tricked into sending the attackers large amounts of bitcoin despite the attackers' empty threats.